Updated kernel packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* Information leaks in the Linux kernel could allow a local, unprivileged user to leak kernel memory to user-space. (CVE-2012-6544, CVE-2012-6545, CVE-2013-3222, CVE-2013-3224, CVE-2013-3231, CVE-2013-3235, Low)

* An information leak was found in the Linux kernel's POSIX signals implementation. A local, unprivileged user could use this flaw to bypass the Address Space Layout Randomization (ASLR) security feature.
(CVE-2013-0914, Low)

* A heap-based buffer overflow in the way the tg3 Ethernet driver parsed the vital product data (VPD) of devices could allow an attacker with physical access to a system to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-1929, Low)

This update also fixes the following bugs :

* Previously on system boot, devices with associated Reserved Memory Region Reporting (RMRR) information had lost their RMRR information after they were removed from the static identity (SI) domain.
Consequently, a system unexpectedly terminated in an endless loop due to unexpected NMIs triggered by DMA errors. This problem was observed on HP ProLiant Generation 7 (G7) and 8 (Gen8) systems. This update prevents non-USB devices that have RMRR information associated with them from being placed into the SI domain during system boot. HP ProLiant G7 and Gen8 systems that contain devices with the RMRR information now boot as expected. (BZ#957606)

* Previously, the kernel's futex wait code used timeouts that had granularity in milliseconds. Also, when passing these timeouts to system calls, the kernel converted the timeouts to 'jiffies'.
Consequently, programs could time out inaccurately which could lead to significant latency problems in certain environments. This update modifies the futex wait code to use a high-resolution timer (hrtimer) so the timeout granularity is now in microseconds. Timeouts are no longer converted to 'jiffies' when passed to system calls. Timeouts passed to programs are now accurate and the programs time out as expected. (BZ#958021)

* A recent change modified the size of the task_struct structure in the floating point unit (fpu) counter. However, on Intel Itanium systems, this change caused the kernel Application Binary Interface (kABI) to stop working properly when a previously compiled module was loaded, resulting in a kernel panic. With this update the change causing this bug has been reverted so the bug can no longer occur.
(BZ#966878)

* The cxgb4 driver previously did not clear data structures used for firmware requests. Consequently, when initializing some Chelsio's Terminator 4 (T4) adapters, a probe request could fail because the request was incompatible with the adapter's firmware. This update modifies the cxgb4 driver to properly initialize firmware request structures before sending a request to the firmware and the problem no longer occurs. (BZ#971872)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Updated java-1.6.0-openjdk packages that fix various security issues are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

These packages provide the OpenJDK 6 Java Runtime Environment and the OpenJDK 6 Software Development Kit.

Multiple flaws were discovered in the ImagingLib and the image attribute, channel, layout and raster processing in the 2D component.
An untrusted Java application or applet could possibly use these flaws to trigger Java Virtual Machine memory corruption. (CVE-2013-2470, CVE-2013-2471, CVE-2013-2472, CVE-2013-2473, CVE-2013-2463, CVE-2013-2465, CVE-2013-2469)

Integer overflow flaws were found in the way AWT processed certain input. An attacker could use these flaws to execute arbitrary code with the privileges of the user running an untrusted Java applet or application. (CVE-2013-2459)

Multiple improper permission check issues were discovered in the Sound and JMX components in OpenJDK. An untrusted Java application or applet could use these flaws to bypass Java sandbox restrictions.
(CVE-2013-2448, CVE-2013-2457, CVE-2013-2453)

Multiple flaws in the Serialization, Networking, Libraries and CORBA components can be exploited by an untrusted Java application or applet to gain access to potentially sensitive information. (CVE-2013-2456, CVE-2013-2447, CVE-2013-2455, CVE-2013-2452, CVE-2013-2443, CVE-2013-2446)

It was discovered that the Hotspot component did not properly handle out-of-memory errors. An untrusted Java application or applet could possibly use these flaws to terminate the Java Virtual Machine.
(CVE-2013-2445)

It was discovered that the AWT component did not properly manage certain resources and that the ObjectStreamClass of the Serialization component did not properly handle circular references. An untrusted Java application or applet could possibly use these flaws to cause a denial of service. (CVE-2013-2444, CVE-2013-2450)

It was discovered that the Libraries component contained certain errors related to XML security and the class loader. A remote attacker could possibly exploit these flaws to bypass intended security mechanisms or disclose potentially sensitive information and cause a denial of service. (CVE-2013-2407, CVE-2013-2461)

It was discovered that JConsole did not properly inform the user when establishing an SSL connection failed. An attacker could exploit this flaw to gain access to potentially sensitive information.
(CVE-2013-2412)

It was found that documentation generated by Javadoc was vulnerable to a frame injection attack. If such documentation was accessible over a network, and a remote attacker could trick a user into visiting a specially crafted URL, it would lead to arbitrary web content being displayed next to the documentation. This could be used to perform a phishing attack by providing frame content that spoofed a login form on the site hosting the vulnerable documentation. (CVE-2013-1571)

It was discovered that the 2D component created shared memory segments with insecure permissions. A local attacker could use this flaw to read or write to the shared memory segment. (CVE-2013-1500)

Red Hat would like to thank US-CERT for reporting CVE-2013-1571, and Tim Brown for reporting CVE-2013-1500. US-CERT acknowledges Oracle as the original reporter of CVE-2013-1571.

All users of java-1.6.0-openjdk are advised to upgrade to these updated packages, which resolve these issues. All running instances of OpenJDK Java must be restarted for the update to take effect.

Updated bind packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

A denial of service flaw was found in the libdns library. A remote attacker could use this flaw to send a specially crafted DNS query to named that, when processed, would cause named to use an excessive amount of memory, or possibly crash. (CVE-2013-2266)

Note: This update disables the syntax checking of NAPTR (Naming Authority Pointer) resource records.

This update also fixes the following bug :

* Previously, rebuilding the bind-dyndb-ldap source RPM failed with a '/usr/include/dns/view.h:76:21: error: dns/rrl.h: No such file or directory' error. (BZ#928439)

All bind users are advised to upgrade to these updated packages, which contain patches to correct these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

Updated nss and nspr packages that fix one security issue, various bugs, and add enhancements are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact.

Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications. Netscape Portable Runtime (NSPR) provides platform independence for non-GUI operating system facilities.

It was found that a Certificate Authority (CA) mis-issued two intermediate certificates to customers. These certificates could be used to launch man-in-the-middle attacks. This update renders those certificates as untrusted. This covers all uses of the certificates, including SSL, S/MIME, and code signing. (BZ#890605)

In addition, the nss package has been upgraded to upstream version 3.13.6, and the nspr package has been upgraded to upstream version 4.9.2. These updates provide a number of bug fixes and enhancements over the previous versions. (BZ#893371, BZ#893372)

All NSS and NSPR users should upgrade to these updated packages, which correct these issues and add these enhancements. After installing the update, applications using NSS and NSPR must be restarted for the changes to take effect.

Updated libvirt packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems.

A flaw was found in the way libvirtd handled connection cleanup (when a connection was being closed) under certain error conditions. A remote attacker able to establish a read-only connection to libvirtd could use this flaw to crash libvirtd or, potentially, execute arbitrary code with the privileges of the root user. (CVE-2013-0170)

This issue was discovered by Tingting Zheng of Red Hat.

All users of libvirt are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, libvirtd will be restarted automatically.

Updated kdelibs packages that fix two security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kdelibs packages provide libraries for the K Desktop Environment (KDE). Konqueror is a web browser.

A heap-based buffer overflow flaw was found in the way the CSS (Cascading Style Sheets) parser in kdelibs parsed the location of the source for font faces. A web page containing malicious content could cause an application using kdelibs (such as Konqueror) to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2012-4512)

A heap-based buffer over-read flaw was found in the way kdelibs calculated canvas dimensions for large images. A web page containing malicious content could cause an application using kdelibs to crash or disclose portions of its memory. (CVE-2012-4513)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.

Updated icedtea-web packages that fix two security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The IcedTea-Web project provides a Java web browser plug-in and an implementation of Java Web Start, which is based on the Netx project.
It also contains a configuration tool for managing deployment settings for the plug-in and Web Start implementations.

An uninitialized pointer use flaw was found in the IcedTea-Web plug-in. Visiting a malicious web page could possibly cause a web browser using the IcedTea-Web plug-in to crash, disclose a portion of its memory, or execute arbitrary code. (CVE-2012-3422)

It was discovered that the IcedTea-Web plug-in incorrectly assumed all strings received from the browser were NUL terminated. When using the plug-in with a web browser that does not NUL terminate strings, visiting a web page containing a Java applet could possibly cause the browser to crash, disclose a portion of its memory, or execute arbitrary code. (CVE-2012-3423)

Red Hat would like to thank Chamal De Silva for reporting the CVE-2012-3422 issue.

This erratum also upgrades IcedTea-Web to version 1.2.1. Refer to the NEWS file, linked to in the References, for further information.

All IcedTea-Web users should upgrade to these updated packages, which resolve these issues. Web browsers using the IcedTea-Web browser plug-in must be restarted for this update to take effect.

Updated krb5 packages that fix two security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third-party, the Key Distribution Center (KDC).

An uninitialized pointer use flaw was found in the way the MIT Kerberos KDC handled initial authentication requests (AS-REQ). A remote, unauthenticated attacker could use this flaw to crash the KDC via a specially crafted AS-REQ request. (CVE-2012-1015)

A NULL pointer dereference flaw was found in the MIT Kerberos administration daemon, kadmind. A Kerberos administrator who has the 'create' privilege could use this flaw to crash kadmind.
(CVE-2012-1013)

Red Hat would like to thank the MIT Kerberos project for reporting CVE-2012-1015. Upstream acknowledges Emmanuel Bouillon (NCI Agency) as the original reporter of CVE-2012-1015.

All krb5 users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the krb5kdc and kadmind daemons will be restarted automatically.

Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux.

A flaw was found in the way the pyGrub boot loader handled compressed kernel images. A privileged guest user in a para-virtualized guest (a DomU) could use this flaw to create a crafted kernel image that, when attempting to boot it, could result in an out-of-memory condition in the privileged domain (the Dom0). (CVE-2012-2625)

Red Hat would like to thank Xinli Niu for reporting this issue.

All users of xen are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the xend service must be restarted for this update to take effect.

Updated bind packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

An uninitialized data structure use flaw was found in BIND when DNSSEC validation was enabled. A remote attacker able to send a large number of queries to a DNSSEC validating BIND resolver could use this flaw to cause it to exit unexpectedly with an assertion failure.
(CVE-2012-3817)

Users of bind are advised to upgrade to these updated packages, which correct this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Updated bind97 packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

An uninitialized data structure use flaw was found in BIND when DNSSEC validation was enabled. A remote attacker able to send a large number of queries to a DNSSEC validating BIND resolver could use this flaw to cause it to exit unexpectedly with an assertion failure.
(CVE-2012-3817)

Users of bind97 are advised to upgrade to these updated packages, which correct this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Updated php53 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

It was discovered that the PHP XSL extension did not restrict the file writing capability of libxslt. A remote attacker could use this flaw to create or overwrite an arbitrary file that is writable by the user running PHP, if a PHP script processed untrusted eXtensible Style Sheet Language Transformations (XSLT) content. (CVE-2012-0057)

Note: This update disables file writing by default. A new PHP configuration directive, 'xsl.security_prefs', can be used to enable file writing in XSLT.

A flaw was found in the way PHP validated file names in file upload requests. A remote attacker could possibly use this flaw to bypass the sanitization of the uploaded file names, and cause a PHP script to store the uploaded file in an unexpected directory, by using a directory traversal attack. (CVE-2012-1172)

Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way the PHP phar extension processed certain fields of tar archive files. A remote attacker could provide a specially crafted tar archive file that, when processed by a PHP application using the phar extension, could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running PHP. (CVE-2012-2386)

A format string flaw was found in the way the PHP phar extension processed certain PHAR files. A remote attacker could provide a specially crafted PHAR file, which once processed in a PHP application using the phar extension, could lead to information disclosure and possibly arbitrary code execution via a crafted phar:// URI.
(CVE-2010-2950)

A flaw was found in the DES algorithm implementation in the crypt() password hashing function in PHP. If the password string to be hashed contained certain characters, the remainder of the string was ignored when calculating the hash, significantly reducing the password strength. (CVE-2012-2143)

Note: With this update, passwords are no longer truncated when performing DES hashing. Therefore, new hashes of the affected passwords will not match stored hashes generated using vulnerable PHP versions, and will need to be updated.

It was discovered that the fix for CVE-2012-1823, released via RHSA-2012:0547, did not properly filter all php-cgi command line arguments. A specially crafted request to a PHP script could cause the PHP interpreter to execute the script in a loop, or output usage information that triggers an Internal Server Error. (CVE-2012-2336)

A memory leak flaw was found in the PHP strtotime() function call. A remote attacker could possibly use this flaw to cause excessive memory consumption by triggering many strtotime() function calls.
(CVE-2012-0789)

It was found that PHP did not check the zend_strndup() function's return value in certain cases. A remote attacker could possibly use this flaw to crash a PHP application. (CVE-2011-4153)

Upstream acknowledges Rubin Xu and Joseph Bonneau as the original reporters of CVE-2012-2143.

All php53 users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Updated samba3x and samba packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6 respectively.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Samba is an open source implementation of the Server Message Block (SMB) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other information.

A flaw was found in the way Samba handled certain Local Security Authority (LSA) Remote Procedure Calls (RPC). An authenticated user could use this flaw to issue an RPC call that would modify the privileges database on the Samba server, allowing them to steal the ownership of files and directories that are being shared by the Samba server, and create, delete, and modify user accounts, as well as other Samba server administration tasks. (CVE-2012-2111)

Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges Ivano Cristofolini as the original reporter.

Users of Samba are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, the smb service will be restarted automatically.

Updated php packages that fix several security issues are now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* Using PCI passthrough without interrupt remapping support allowed Xen hypervisor guests to generate MSI interrupts and thus potentially inject traps. A privileged guest user could use this flaw to crash the host or possibly escalate their privileges on the host. The fix for this issue can prevent PCI passthrough working and guests starting.
Refer to Red Hat Bugzilla bug 715555 for details. (CVE-2011-1898, Important)

* A flaw was found in the way CIFS (Common Internet File System) shares with DFS referrals at their root were handled. An attacker on the local network who is able to deploy a malicious CIFS server could create a CIFS network share that, when mounted, would cause the client system to crash. (CVE-2011-3363, Moderate)

* A NULL pointer dereference flaw was found in the way the Linux kernel's key management facility handled user-defined key types. A local, unprivileged user could use the keyctl utility to cause a denial of service. (CVE-2011-4110, Moderate)

* A flaw in the way memory containing security-related data was handled in tpm_read() could allow a local, unprivileged user to read the results of a previously run TPM command. (CVE-2011-1162, Low)

* A NULL pointer dereference flaw was found in the Linux kernel's HFS file system implementation. A local attacker could use this flaw to cause a denial of service by mounting a disk that contains a specially crafted HFS file system with a corrupted MDB extent record.
(CVE-2011-2203, Low)

* The I/O statistics from the taskstats subsystem could be read without any restrictions. A local, unprivileged user could use this flaw to gather confidential information, such as the length of a password used in a process. (CVE-2011-2494, Low)

Red Hat would like to thank Yogesh Sharma for reporting CVE-2011-3363;
Peter Huewe for reporting CVE-2011-1162; Clement Lecigne for reporting CVE-2011-2203; and Vasiliy Kulikov of Openwall for reporting CVE-2011-2494.

This update also fixes several bugs and adds one enhancement.
Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect.

Updated ruby packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks.

A flaw was found in the way large amounts of memory were allocated on 64-bit systems when using the BigDecimal class. A context-dependent attacker could use this flaw to cause memory corruption, causing a Ruby application that uses the BigDecimal class to crash or, possibly, execute arbitrary code. This issue did not affect 32-bit systems.
(CVE-2011-0188)

A race condition flaw was found in the remove system entries method in the FileUtils module. If a local user ran a Ruby script that uses this method, a local attacker could use this flaw to delete arbitrary files and directories accessible to that user via a symbolic link attack.
(CVE-2011-1004)

It was found that WEBrick (the Ruby HTTP server toolkit) did not filter terminal escape sequences from its log files. A remote attacker could use specially crafted HTTP requests to inject terminal escape sequences into the WEBrick log files. If a victim viewed the log files with a terminal emulator, it could result in control characters being executed with the privileges of that user. (CVE-2009-4492)

A cross-site scripting (XSS) flaw was found in the way WEBrick displayed error pages. A remote attacker could use this flaw to perform a cross-site scripting attack against victims by tricking them into visiting a specially crafted URL. (CVE-2010-0541)

A flaw was found in the method for translating an exception message into a string in the Exception class. A remote attacker could use this flaw to bypass safe level 4 restrictions, allowing untrusted (tainted) code to modify arbitrary, trusted (untainted) strings, which safe level 4 restrictions would otherwise prevent. (CVE-2011-1005)

Red Hat would like to thank Drew Yao of Apple Product Security for reporting the CVE-2011-0188 and CVE-2010-0541 issues.

All Ruby users should upgrade to these updated packages, which contain backported patches to resolve these issues.

Updated bind and bind97 packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

An off-by-one flaw was found in the way BIND processed negative responses with large resource record sets (RRSets). An attacker able to send recursive queries to a BIND server that is configured as a caching resolver could use this flaw to cause named to exit with an assertion failure. (CVE-2011-1910)

All BIND users are advised to upgrade to these updated packages, which resolve this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

Updated systemtap packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

SystemTap is an instrumentation system for systems running the Linux kernel, version 2.6. Developers can write scripts to collect data on the operation of the system.

A divide-by-zero flaw was found in the way SystemTap handled malformed debugging information in DWARF format. When SystemTap unprivileged mode was enabled, an unprivileged user in the stapusr group could use this flaw to crash the system. Additionally, a privileged user (root, or a member of the stapdev group) could trigger this flaw when tricked into instrumenting a specially crafted ELF binary, even when unprivileged mode was not enabled. (CVE-2011-1769)

SystemTap users should upgrade to these updated packages, which contain a backported patch to correct this issue.

Updated gimp packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The GIMP (GNU Image Manipulation Program) is an image composition and editing program.

An integer overflow flaw, leading to a heap-based buffer overflow, was found in the GIMP's Microsoft Windows Bitmap (BMP) and Personal Computer eXchange (PCX) image file plug-ins. An attacker could create a specially crafted BMP or PCX image file that, when opened, could cause the relevant plug-in to crash or, potentially, execute arbitrary code with the privileges of the user running the GIMP. (CVE-2009-1570, CVE-2011-1178)

A heap-based buffer overflow flaw was found in the GIMP's Paint Shop Pro (PSP) image file plug-in. An attacker could create a specially crafted PSP image file that, when opened, could cause the PSP plug-in to crash or, potentially, execute arbitrary code with the privileges of the user running the GIMP. (CVE-2010-4543)

A stack-based buffer overflow flaw was found in the GIMP's Lightning, Sphere Designer, and Gfig image filters. An attacker could create a specially crafted Lightning, Sphere Designer, or Gfig filter configuration file that, when opened, could cause the relevant plug-in to crash or, potentially, execute arbitrary code with the privileges of the user running the GIMP. (CVE-2010-4540, CVE-2010-4541, CVE-2010-4542)

Red Hat would like to thank Stefan Cornelius of Secunia Research for responsibly reporting the CVE-2009-1570 flaw.

Users of the GIMP are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The GIMP must be restarted for the update to take effect.

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* A flaw in the dccp_rcv_state_process() function could allow a remote attacker to cause a denial of service, even when the socket was already closed. (CVE-2011-1093, Important)

* Multiple buffer overflow flaws were found in the Linux kernel's Management Module Support for Message Passing Technology (MPT) based controllers. A local, unprivileged user could use these flaws to cause a denial of service, an information leak, or escalate their privileges. (CVE-2011-1494, CVE-2011-1495, Important)

* A missing validation of a null-terminated string data structure element in the bnep_sock_ioctl() function could allow a local user to cause an information leak or a denial of service. (CVE-2011-1079, Moderate)

* Missing error checking in the way page tables were handled in the Xen hypervisor implementation could allow a privileged guest user to cause the host, and the guests, to lock up. (CVE-2011-1166, Moderate)

* A flaw was found in the way the Xen hypervisor implementation checked for the upper boundary when getting a new event channel port.
A privileged guest user could use this flaw to cause a denial of service or escalate their privileges. (CVE-2011-1763, Moderate)

* The start_code and end_code values in '/proc/[pid]/stat' were not protected. In certain scenarios, this flaw could be used to defeat Address Space Layout Randomization (ASLR). (CVE-2011-0726, Low)

* A missing initialization flaw in the sco_sock_getsockopt() function could allow a local, unprivileged user to cause an information leak.
(CVE-2011-1078, Low)

* A missing validation of a null-terminated string data structure element in the do_replace() function could allow a local user who has the CAP_NET_ADMIN capability to cause an information leak.
(CVE-2011-1080, Low)

* A buffer overflow flaw in the DEC Alpha OSF partition implementation in the Linux kernel could allow a local attacker to cause an information leak by mounting a disk that contains specially crafted partition tables. (CVE-2011-1163, Low)

* Missing validations of null-terminated string data structure elements in the do_replace(), compat_do_replace(), do_ipt_get_ctl(), do_ip6t_get_ctl(), and do_arpt_get_ctl() functions could allow a local user who has the CAP_NET_ADMIN capability to cause an information leak. (CVE-2011-1170, CVE-2011-1171, CVE-2011-1172, Low)

* A heap overflow flaw in the Linux kernel's EFI GUID Partition Table (GPT) implementation could allow a local attacker to cause a denial of service by mounting a disk that contains specially crafted partition tables. (CVE-2011-1577, Low)

Red Hat would like to thank Dan Rosenberg for reporting CVE-2011-1494 and CVE-2011-1495; Vasiliy Kulikov for reporting CVE-2011-1079, CVE-2011-1078, CVE-2011-1080, CVE-2011-1170, CVE-2011-1171, and CVE-2011-1172; Kees Cook for reporting CVE-2011-0726; and Timo Warns for reporting CVE-2011-1163 and CVE-2011-1577.

This update also fixes several bugs. Documentation for these bug fixes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs noted in the Technical Notes. The system must be rebooted for this update to take effect.

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* A buffer overflow flaw was found in the ecryptfs_uid_hash() function in the Linux kernel eCryptfs implementation. On systems that have the eCryptfs netlink transport (Red Hat Enterprise Linux 5 does) or where the '/dev/ecryptfs' file has world-writable permissions (which it does not, by default, on Red Hat Enterprise Linux 5), a local, unprivileged user could use this flaw to cause a denial of service or possibly escalate their privileges. (CVE-2010-2492, Important)

* A miscalculation of the size of the free space of the initial directory entry in a directory leaf block was found in the Linux kernel Global File System 2 (GFS2) implementation. A local, unprivileged user with write access to a GFS2-mounted file system could perform a rename operation on that file system to trigger a NULL pointer dereference, possibly resulting in a denial of service or privilege escalation. (CVE-2010-2798, Important)

* A flaw was found in the Xen hypervisor implementation when running a system that has an Intel CPU without Extended Page Tables (EPT) support. While attempting to dump information about a crashing fully-virtualized guest, the flaw could cause the hypervisor to crash the host as well. A user with permissions to configure a fully-virtualized guest system could use this flaw to crash the host.
(CVE-2010-2938, Moderate)

* Information leak flaws were found in the Linux kernel's Traffic Control Unit implementation. A local attacker could use these flaws to cause the kernel to leak kernel memory to user-space, possibly leading to the disclosure of sensitive information. (CVE-2010-2942, Moderate)

* A flaw was found in the Linux kernel's XFS file system implementation. The file handle lookup could return an invalid inode as valid. If an XFS file system was mounted via NFS (Network File System), a local attacker could access stale data or overwrite existing data that reused the inodes. (CVE-2010-2943, Moderate)

* An integer overflow flaw was found in the extent range checking code in the Linux kernel's ext4 file system implementation. A local, unprivileged user with write access to an ext4-mounted file system could trigger this flaw by writing to a file at a very large file offset, resulting in a local denial of service. (CVE-2010-3015, Moderate)

* An information leak flaw was found in the Linux kernel's USB implementation. Certain USB errors could result in an uninitialized kernel buffer being sent to user-space. An attacker with physical access to a target system could use this flaw to cause an information leak. (CVE-2010-1083, Low)

Red Hat would like to thank Andre Osterhues for reporting CVE-2010-2492; Grant Diffey of CenITex for reporting CVE-2010-2798;
Toshiyuki Okajima for reporting CVE-2010-3015; and Marcus Meissner for reporting CVE-2010-1083.

This update also fixes several bugs. Documentation for these bug fixes will be available shortly from the Technical Notes document linked to in the References.

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue :

* when an application has a stack overflow, the stack could silently overwrite another memory mapped area instead of a segmentation fault occurring, which could cause an application to execute arbitrary code, possibly leading to privilege escalation. It is known that the X Window System server can be used to trigger this flaw. (CVE-2010-2240, Important)

Red Hat would like to thank the X.Org security team for reporting this issue. Upstream acknowledges Rafal Wojtczuk as the original reporter.

Users should upgrade to these updated packages, which contain backported patches to correct this issue. The system must be rebooted for this update to take effect.

Updated httpd packages that fix two security issues and multiple bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The Apache HTTP Server is a popular web server.

A flaw was discovered in the way the mod_proxy module of the Apache HTTP Server handled the timeouts of requests forwarded by a reverse proxy to the back-end server. If the proxy was configured to reuse existing back-end connections, it could return a response intended for another user under certain timeout conditions, possibly leading to information disclosure. (CVE-2010-2791)

A flaw was found in the way the mod_dav module of the Apache HTTP Server handled certain requests. If a remote attacker were to send a carefully crafted request to the server, it could cause the httpd child process to crash. (CVE-2010-1452)

This update also fixes the following bugs :

* numerous issues in the INFLATE filter provided by mod_deflate.
'Inflate error -5 on flush' errors may have been logged. This update upgrades mod_deflate to the newer upstream version from Apache HTTP Server 2.2.15. (BZ#625435)

* the response would be corrupted if mod_filter applied the DEFLATE filter to a resource requiring a subrequest with an internal redirect.
(BZ#625451)

* the OID() function used in the mod_ssl 'SSLRequire' directive did not correctly evaluate extensions of an unknown type. (BZ#625452)

All httpd users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Updated kdelibs packages that fix one security issue are now available for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

The kdelibs packages provide libraries for the K Desktop Environment (KDE).

A buffer overflow flaw was found in the kdelibs string to floating point conversion routines. A web page containing malicious JavaScript could crash Konqueror or, potentially, execute arbitrary code with the privileges of the user running Konqueror. (CVE-2009-0689)

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. The desktop must be restarted (log out, then log back in) for this update to take effect.

Updated cups packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

[Updated 12th January 2010] The packages list in this erratum has been updated to include missing i386 packages for Red Hat Enterprise Linux Desktop and RHEL Desktop Workstation.

The Common UNIX Printing System (CUPS) provides a portable printing layer for UNIX operating systems.

A use-after-free flaw was found in the way CUPS handled references in its file descriptors-handling interface. A remote attacker could, in a specially crafted way, query for the list of current print jobs for a specific printer, leading to a denial of service (cupsd crash).
(CVE-2009-3553)

Several cross-site scripting (XSS) flaws were found in the way the CUPS web server interface processed HTML form content. If a remote attacker could trick a local user who is logged into the CUPS web interface into visiting a specially crafted HTML page, the attacker could retrieve and potentially modify confidential CUPS administration data. (CVE-2009-2820)

Red Hat would like to thank Aaron Sigel of Apple Product Security for responsibly reporting the CVE-2009-2820 issue.

Users of cups are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the update, the cupsd daemon will be restarted automatically.

Updated java-1.6.0-openjdk packages that fix several security issues are now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

These packages provide the OpenJDK 6 Java Runtime Environment and the OpenJDK 6 Software Development Kit. The Java Runtime Environment (JRE) contains the software and tools that users need to run applications written using the Java programming language.

An integer overflow flaw and buffer overflow flaws were found in the way the JRE processed image files. An untrusted applet or application could use these flaws to extend its privileges, allowing it to read and write local files, as well as to execute local applications with the privileges of the user running the applet or application.
(CVE-2009-3869, CVE-2009-3871, CVE-2009-3873, CVE-2009-3874)

An information leak was found in the JRE. An untrusted applet or application could use this flaw to extend its privileges, allowing it to read and write local files, as well as to execute local applications with the privileges of the user running the applet or application. (CVE-2009-3881)

It was discovered that the JRE still accepts certificates with MD2 hash signatures, even though MD2 is no longer considered a cryptographically strong algorithm. This could make it easier for an attacker to create a malicious certificate that would be treated as trusted by the JRE. With this update, the JRE disables the use of the MD2 algorithm inside signatures by default. (CVE-2009-2409)

A timing attack flaw was found in the way the JRE processed HMAC digests. This flaw could aid an attacker using forged digital signatures to bypass authentication checks. (CVE-2009-3875)

Two denial of service flaws were found in the JRE. These could be exploited in server-side application scenarios that process DER-encoded (Distinguished Encoding Rules) data. (CVE-2009-3876, CVE-2009-3877)

An information leak was found in the way the JRE handled color profiles. An attacker could use this flaw to discover the existence of files outside of the color profiles directory. (CVE-2009-3728)

A flaw in the JRE with passing arrays to the X11GraphicsDevice API was found. An untrusted applet or application could use this flaw to access and modify the list of supported graphics configurations. This flaw could also lead to sensitive information being leaked to unprivileged code. (CVE-2009-3879)

It was discovered that the JRE passed entire objects to the logging API. This could lead to sensitive information being leaked to either untrusted or lower-privileged code from an attacker-controlled applet which has access to the logging API and is therefore able to manipulate (read and/or call) the passed objects. (CVE-2009-3880)

Potential information leaks were found in various mutable static variables. These could be exploited in application scenarios that execute untrusted scripting code. (CVE-2009-3882, CVE-2009-3883)

An information leak was found in the way the TimeZone.getTimeZone method was handled. This method could load time zone files that are outside of the [JRE_HOME]/lib/zi/ directory, allowing a remote attacker to probe the local file system. (CVE-2009-3884)

Note: The flaws concerning applets in this advisory, CVE-2009-3869, CVE-2009-3871, CVE-2009-3873, CVE-2009-3874, CVE-2009-3879, CVE-2009-3880, CVE-2009-3881 and CVE-2009-3884, can only be triggered in java-1.6.0-openjdk by calling the 'appletviewer' application.

All users of java-1.6.0-openjdk are advised to upgrade to these updated packages, which resolve these issues. All running instances of OpenJDK Java must be restarted for the update to take effect.

Updated httpd packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The Apache HTTP Server is a popular Web server.

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handle session renegotiation.
A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update partially mitigates this flaw for SSL sessions to HTTP servers using mod_ssl by rejecting client-requested renegotiation.
(CVE-2009-3555)

Note: This update does not fully resolve the issue for HTTPS servers.
An attack is still possible in configurations that require a server-initiated renegotiation. Refer to the following Knowledgebase article for further information:
http://kbase.redhat.com/faq/docs/DOC-20491

A denial of service flaw was found in the Apache mod_deflate module.
This module continued to compress large files until compression was complete, even if the network connection that requested the content was closed before compression completed. This would cause mod_deflate to consume large amounts of CPU if mod_deflate was enabled for a large file. (CVE-2009-1891)

A NULL pointer dereference flaw was found in the Apache mod_proxy_ftp module. A malicious FTP server to which requests are being proxied could use this flaw to crash an httpd child process via a malformed reply to the EPSV or PASV commands, resulting in a limited denial of service. (CVE-2009-3094)

A second flaw was found in the Apache mod_proxy_ftp module. In a reverse proxy configuration, a remote attacker could use this flaw to bypass intended access restrictions by creating a carefully-crafted HTTP Authorization header, allowing the attacker to send arbitrary commands to the FTP server. (CVE-2009-3095)

All httpd users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Updated httpd packages that fix multiple security issues are now available for Red Hat Enterprise Linux 3 and 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The Apache HTTP Server is a popular Web server.

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handle session renegotiation.
A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update partially mitigates this flaw for SSL sessions to HTTP servers using mod_ssl by rejecting client-requested renegotiation.
(CVE-2009-3555)

Note: This update does not fully resolve the issue for HTTPS servers.
An attack is still possible in configurations that require a server-initiated renegotiation. Refer to the following Knowledgebase article for further information:
http://kbase.redhat.com/faq/docs/DOC-20491

A NULL pointer dereference flaw was found in the Apache mod_proxy_ftp module. A malicious FTP server to which requests are being proxied could use this flaw to crash an httpd child process via a malformed reply to the EPSV or PASV commands, resulting in a limited denial of service. (CVE-2009-3094)

A second flaw was found in the Apache mod_proxy_ftp module. In a reverse proxy configuration, a remote attacker could use this flaw to bypass intended access restrictions by creating a carefully-crafted HTTP Authorization header, allowing the attacker to send arbitrary commands to the FTP server. (CVE-2009-3095)

All httpd users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

An updated 4Suite package that fixes one security issue is now available for Red Hat Enterprise Linux 3 and 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The 4Suite package contains XML-related tools and libraries for Python, including 4DOM, 4XSLT, 4XPath, 4RDF, and 4XPointer.

A buffer over-read flaw was found in the way 4Suite's XML parser handles malformed UTF-8 sequences when processing XML files. A specially crafted XML file could cause applications using the 4Suite library to crash while parsing the file. (CVE-2009-3720)

Note: In Red Hat Enterprise Linux 3, this flaw only affects a non-default configuration of the 4Suite package: configurations where the beta version of the cDomlette module is enabled.

All 4Suite users should upgrade to this updated package, which contains a backported patch to correct this issue. After installing the updated package, applications using the 4Suite XML-related tools and libraries must be restarted for the update to take effect.

Updated libvorbis packages that fix multiple security issues are now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The libvorbis packages contain runtime libraries for use in programs that support Ogg Vorbis. Ogg Vorbis is a fully open, non-proprietary, patent-and royalty-free, general-purpose compressed audio format.

Multiple flaws were found in the libvorbis library. A specially crafted Ogg Vorbis media format file (Ogg) could cause an application using libvorbis to crash or, possibly, execute arbitrary code when opened. (CVE-2009-3379)

Users of libvorbis should upgrade to these updated packages, which contain backported patches to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.

Updated kernel packages that fix several security issues and multiple bugs are now available for Red Hat Enterprise Linux 3.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fixes :

* when fput() was called to close a socket, the __scm_destroy() function in the Linux kernel could make indirect recursive calls to itself. This could, potentially, lead to a denial of service issue.
(CVE-2008-5029, Important)

* the sendmsg() function in the Linux kernel did not block during UNIX socket garbage collection. This could, potentially, lead to a local denial of service. (CVE-2008-5300, Important)

* the exit_notify() function in the Linux kernel did not properly reset the exit signal if a process executed a set user ID (setuid) application before exiting. This could allow a local, unprivileged user to elevate their privileges. (CVE-2009-1337, Important)

* a flaw was found in the Intel PRO/1000 network driver in the Linux kernel. Frames with sizes near the MTU of an interface may be split across multiple hardware receive descriptors. Receipt of such a frame could leak through a validation check, leading to a corruption of the length check. A remote attacker could use this flaw to send a specially crafted packet that would cause a denial of service or code execution. (CVE-2009-1385, Important)

* the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags were not cleared when a setuid or setgid program was executed. A local, unprivileged user could use this flaw to bypass the mmap_min_addr protection mechanism and perform a NULL pointer dereference attack, or bypass the Address Space Layout Randomization (ASLR) security feature.
(CVE-2009-1895, Important)

* it was discovered that, when executing a new process, the clear_child_tid pointer in the Linux kernel is not cleared. If this pointer points to a writable portion of the memory of the new program, the kernel could corrupt four bytes of memory, possibly leading to a local denial of service or privilege escalation. (CVE-2009-2848, Important)

* missing initialization flaws were found in getname() implementations in the IrDA sockets, AppleTalk DDP protocol, NET/ROM protocol, and ROSE protocol implementations in the Linux kernel. Certain data structures in these getname() implementations were not initialized properly before being copied to user-space. These flaws could lead to an information leak. (CVE-2009-3002, Important)

* a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important)

Bug fixes :

* this update adds the mmap_min_addr tunable and restriction checks to help prevent unprivileged users from creating new memory mappings below the minimum address. This can help prevent the exploitation of NULL pointer dereference bugs. Note that mmap_min_addr is set to zero (disabled) by default for backwards compatibility. (BZ#512642)

* a bridge reference count problem in IPv6 has been fixed. (BZ#457010)

* enforce null-termination of user-supplied arguments to setsockopt().
(BZ#505514)

* the gcc flag '-fno-delete-null-pointer-checks' was added to the kernel build options. This prevents gcc from optimizing out NULL pointer checks after the first use of a pointer. NULL pointer bugs are often exploited by attackers. Keeping these checks is a safety measure. (BZ#511185)

* a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#520300)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

An updated wget package that fixes a security issue is now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

GNU Wget is a file retrieval utility that can use HTTP, HTTPS, and FTP.

Daniel Stenberg reported that Wget is affected by the previously published 'null prefix attack', caused by incorrect handling of NULL characters in X.509 certificates. If an attacker is able to get a carefully-crafted certificate signed by a trusted Certificate Authority, the attacker could use the certificate during a man-in-the-middle attack and potentially confuse Wget into accepting it by mistake. (CVE-2009-3490)

Wget users should upgrade to this updated package, which contains a backported patch to correct this issue.

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fixes :

* a system with SELinux enforced was more permissive in allowing local users in the unconfined_t domain to map low memory areas even if the mmap_min_addr restriction was enabled. This could aid in the local exploitation of NULL pointer dereference bugs. (CVE-2009-2695, Important)

* a NULL pointer dereference flaw was found in the eCryptfs implementation in the Linux kernel. A local attacker could use this flaw to cause a local denial of service or escalate their privileges.
(CVE-2009-2908, Important)

* a flaw was found in the NFSv4 implementation. The kernel would do an unnecessary permission check after creating a file. This check would usually fail and leave the file with the permission bits set to random values. Note: This is a server-side only issue. (CVE-2009-3286, Important)

* a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important)

* a flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. pci_unmap_single() presented a memory leak that could lead to IOMMU space exhaustion and a system crash. An attacker on the local network could abuse this flaw by using jumbo frames for large amounts of network traffic. (CVE-2009-3613, Important)

* missing initialization flaws were found in the Linux kernel. Padding data in several core network structures was not initialized properly before being sent to user-space. These flaws could lead to information leaks. (CVE-2009-3228, Moderate)

Bug fixes :

* with network bonding in the 'balance-tlb' or 'balance-alb' mode, the primary setting for the primary slave device was lost when said device was brought down. Bringing the slave back up did not restore the primary setting. (BZ#517971)

* some faulty serial device hardware caused systems running the kernel-xen kernel to take a very long time to boot. (BZ#524153)

* a caching bug in nfs_readdir() may have caused NFS clients to see duplicate files or not see all files in a directory. (BZ#526960)

* the RHSA-2009:1243 update removed the mpt_msi_enable option, preventing certain scripts from running. This update adds the option back. (BZ#526963)

* an iptables rule with the recent module and a hit count value greater than the ip_pkt_list_tot parameter (the default is 20), did not have any effect over packets, as the hit count could not be reached. (BZ#527434)

* a check has been added to the IPv4 code to make sure that rt is not NULL, to help prevent future bugs in functions that call ip_append_data() from being exploitable. (BZ#527436)

* a kernel panic occurred in certain conditions after reconfiguring a tape drive's block size. (BZ#528133)

* when using the Linux Virtual Server (LVS) in a master and backup configuration, and propagating active connections on the master to the backup, the connection timeout value on the backup was hard-coded to 180 seconds, meaning connection information on the backup was soon lost. This could prevent the successful failover of connections. The timeout value can now be set via 'ipvsadm --set'. (BZ#528645)

* a bug in nfs4_do_open_expired() could have caused the reclaimer thread on an NFSv4 client to enter an infinite loop. (BZ#529162)

* MSI interrupts may not have been delivered for r8169 based network cards that have MSI interrupts enabled. This bug only affected certain systems. (BZ#529366)

Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

Updated kernel packages that fix security issues are now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* a NULL pointer dereference flaw was found in each of the following functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could be released by other processes before it is used to update the pipe's reader and writer counters. This could lead to a local denial of service or privilege escalation. (CVE-2009-3547, Important)

Users should upgrade to these updated packages, which contain a backported patch to correct these issues. The system must be rebooted for this update to take effect.

An updated ntp package that fixes two security issues is now available for Red Hat Enterprise Linux 4.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source.

A buffer overflow flaw was discovered in the ntpd daemon's NTPv4 authentication code. If ntpd was configured to use public key cryptography for NTP packet authentication, a remote attacker could use this flaw to send a specially crafted request packet that could crash ntpd or, potentially, execute arbitrary code with the privileges of the 'ntp' user. (CVE-2009-1252)

Note: NTP authentication is not enabled by default.

A buffer overflow flaw was found in the ntpq diagnostic command. A malicious, remote server could send a specially crafted reply to an ntpq request that could crash ntpq or, potentially, execute arbitrary code with the privileges of the user running the ntpq command.
(CVE-2009-0159)

All ntp users are advised to upgrade to this updated package, which contains backported patches to resolve these issues. After installing the update, the ntpd daemon will be restarted automatically.

An updated util-linux package that fixes one security issue and several bugs is now available.

This update has been rated as having low security impact by the Red Hat Security Response Team.

The util-linux package contains a collection of basic system utilities, such as fdisk and mount.

A log injection attack was found in util-linux when logging log in attempts via the audit subsystem of the Linux kernel. A remote attacker could use this flaw to modify certain parts of logged events, possibly hiding their activities on a system. (CVE-2008-1926)

This updated package also fixes the following bugs :

* partitions created by VMware ESX(tm) were not included in the list of recognized file systems used by fdisk. Consequently, if VMware ESX was installed, 'fdisk -l' returned 'Unknown' for these partitions. With this update, information regarding the VMKcore and VMFS partitions has been added to the file systems list. On systems running VMware ESX, 'fdisk -l' now lists information about these partitions as expected.
(BZ#447264)

* if a username was not set, the login command would fail with a Segmentation fault. With this update, login lets the audit system handle NULL usernames (it sends an AUDIT_USER_LOGIN message to the audit system in the event there is no username set). (BZ#456213)

* the nfs(5) man page listed version 2 as the default. This is incorrect: unless otherwise specified, the NFS client uses NFS version 3. The man page has been corrected. (BZ#458539)

* in certain situations, backgrounded NFS mounts died shortly after being backgrounded when the mount command was executed by the initlog command, which, for example, would occur when running an init script, such as running the 'service netfs start' command. In these situations, running the 'ps -ef' command showed backgrounded NFS mounts disappearing shortly after being backgrounded. In this updated package, backgrounded mount processes detach from the controlling terminal, which resolves this issue. (BZ#461488)

* if a new partition's starting cylinder was beyond one terabyte, fdisk could not create the partition. This has been fixed. (BZ#471372)

* in rare cases 'mount -a' ignored fstab order and tried to re-mount file systems on mpath devices. With this update, mount honors fstab order even in the rare cases reported. (BZ#472186)

* the 'mount --move' command moved a file system's mount point as expected (for example, /proc/mounts showed the changed mount point as expected) but did not update /etc/mtab properly. With this update, the 'mount --move' command gathers all necessary information about the old mount point, copies it to the new mount point and then deletes the old point, ensuring /etc/mtab is updated properly. (BZ#485004)

Util-linux users are advised to upgrade to this updated package, which addresses this vulnerability and resolves these issues.

An updated nfs-utils package that fixes a security issue and multiple bugs is now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The nfs-utils package provides a daemon for the kernel NFS server and related tools, which provides a much higher level of performance than the traditional Linux NFS server used by most users.

A flaw was found in the nfs-utils package provided by RHBA-2008:0742.
The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376)

This update also includes the following bug fixes :

* the 'nfsstat' command now displays correct statistics. In previous versions, performing more than 2^31 RPC calls could cause the 'nfsstat' command to incorrectly display the number of calls as 'negative'. This was because 'nfsstat' printed statistics from /proc/net/rpc/* files as signed integers; with this version of nfs-utils, 'nfsstat' now reads and prints these statistics as unsigned integers. (BZ#404831)

* imapd upcalls now support zero-length reads and perform extra bounds checking in gssd and svcgssd. This fixes a bug in previous versions that could cause the rpc.imapd daemon to hang when communicating with the kernel, which would halt any ID translation services. (BZ#448710)

* tcp_wrappers supported in nfs-utils now allows proper application of hosts access rules defined in /etc/hosts.allow and /etc/hosts.deny.
(BZ#494585)

* the nfs init script did not check whether SECURE_NFS was set to 'yes' before starting, stopping, or querying rpc.svcgssd. On systems where SECURE_NFS was not set to 'yes', the nfs init script could not start the rpc.svcgssd daemon at the 'service nfs start' command because the rpcsvcssd init script would check the status of SECURE_NFS before starting the daemon. However, at the 'service nfs stop' or 'service nfs restart' commands, nfs init script would attempt to stop rpc.svcgssd and then report a failure because the daemon was not running in the first place. These error messages may have misled end-users into believing that there was a genuine problem with their NFS configuration. This version of nfs-utils contains a fix backported from Red Hat Enterprise Linux 5. nfs-utils now checks the status of SECURE_NFS before the nfs init script attempts to start, query or stop rpc.svcgssd and therefore, the irrelevant error messages seen previously will not appear. (BZ#470423)

* the nfs init script is now fully compliant with Linux Standard Base Core specifications. This update fixes a bug that prevented '/etc/init.d/nfs start' from exiting properly if NFS was already running. (BZ#474570)

* /var/lib/nfs/statd/sm is now created with the proper user and group whenever rpc.statd is called. In previous versions, some thread stack conditions could incorrectly prevent rpc.statd from creating the /var/lib/nfs/statd/sm file, which could cause 'service nfslock start' to fail. (BZ#479376)

All users of nfs-utils should upgrade to this updated package, which resolves these issues.

Updated libtiff packages that fix various security issues and a bug are now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The libtiff packages contain a library of functions for manipulating Tagged Image File Format (TIFF) files.

Multiple uses of uninitialized values were discovered in libtiff's Lempel-Ziv-Welch (LZW) compression algorithm decoder. An attacker could create a carefully crafted LZW-encoded TIFF file that would cause an application linked with libtiff to crash or, possibly, execute arbitrary code. (CVE-2008-2327)

Red Hat would like to thank Drew Yao of the Apple Product Security team for reporting this issue.

A buffer overflow flaw was discovered in the tiff2pdf conversion program distributed with libtiff. An attacker could create a TIFF file containing UTF-8 characters that would, when converted to PDF format, cause tiff2pdf to crash, or, possibly, execute arbitrary code.
(CVE-2006-2193)

Additionally, these updated packages fix the following bug :

* the libtiff packages included manual pages for the sgi2tiff and tiffsv commands, which are not included in these packages. These extraneous manual pages were removed.

All libtiff users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

Updated Red Hat Enterprise Linux 4 Technology Preview autofs5 packages are now available to fix a security flaw.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The autofs utility controls the operation of the automount daemon, which automatically mounts and unmounts file systems after a period of inactivity. The autofs version 5 package was made available as a technology preview in Red Hat Enterprise Linux version 4.6.

There was a security issue with the default installed configuration of autofs version 5 whereby the entry for the 'hosts' map did not specify the 'nosuid' mount option. A local user with control of a remote nfs server could create a setuid root executable within an exported filesystem on the remote nfs server that, if mounted using the default hosts map, would allow the user to gain root privileges.
(CVE-2007-5964)

Due to the fact that autofs version 5 always mounted hosts map entries suid by default, autofs has now been altered to always use the 'nosuid' option when mounting from the default hosts map. The 'suid' option must be explicitly given in the master map entry to revert to the old behavior. This change affects only the hosts map which corresponds to the /net entry in the default configuration.

Users are advised to upgrade to these updated autofs5 packages, which resolve this issue.

Red Hat would like to thank Josh Lange for reporting this issue.

Updated pcre packages that resolve several security issues are now available for Red Hat Enterprise Linux 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

PCRE is a Perl-compatible regular expression library.

Flaws were discovered in the way PCRE handles certain malformed regular expressions. If an application linked against PCRE, such as Konqueror, parses a malicious regular expression, it may have been possible to run arbitrary code as the user running the application.
(CVE-2006-7225, CVE-2006-7226, CVE-2006-7228, CVE-2006-7230, CVE-2007-1659)

Users of PCRE are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.

Red Hat would like to thank Ludwig Nussel for reporting these issues.

Updated openldap packages that fix a security flaw are now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

OpenLDAP is an open source suite of LDAP (Lightweight Directory Access Protocol) applications and development tools.

A flaw was found in the way OpenLDAP's slapd daemon handled malformed objectClasses LDAP attributes. An authenticated local or remote attacker could create an LDAP request which could cause a denial of service by crashing slapd. (CVE-2007-5707)

In addition, the following feature was added: * OpenLDAP client tools now have new option to configure their bind timeout.

All users are advised to upgrade to these updated openldap packages, which contain a backported patch to correct this issue and provide this security enhancement.

Updated samba packages that fix several security issues are now available for Red Hat Enterprise Linux 4.

This update has been rated as having critical security impact by the Red Hat Security Response Team.

Samba is a suite of programs used by machines to share files, printers, and other information.

A buffer overflow flaw was found in the way Samba creates NetBIOS replies. If a Samba server is configured to run as a WINS server, a remote unauthenticated user could cause the Samba server to crash or execute arbitrary code. (CVE-2007-5398)

A heap-based buffer overflow flaw was found in the way Samba authenticates users. A remote unauthenticated user could trigger this flaw to cause the Samba server to crash. Careful analysis of this flaw has determined that arbitrary code execution is not possible, and under most circumstances will not result in a crash of the Samba server. (CVE-2007-4572)

A flaw was found in the way Samba assigned group IDs under certain conditions. If the 'winbind nss info' parameter in smb.conf is set to either 'sfu' or 'rfc2307', Samba users are incorrectly assigned the group ID of 0. (CVE-2007-4138)

Red Hat would like to thank Alin Rad Pop of Secunia Research, Rick King, and the Samba developers for responsibly disclosing these issues.

All Samba users are advised to upgrade to these updated packages, which contain a backported patch to correct these issues.

Updated OpenSSL packages that correct a security issue and various bugs are now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, and is also a full-strength general-purpose cryptography library.

A flaw was found in the SSL_get_shared_ciphers() utility function. An attacker could send a list of ciphers to an application that used this function and overrun a buffer by a single byte (CVE-2007-5135). Few applications make use of this vulnerable function and generally it is used only when applications are compiled for debugging.

A number of possible side-channel attacks were discovered affecting OpenSSL. A local attacker could possibly obtain RSA private keys being used on a system. In practice these attacks would be difficult to perform outside of a lab environment. This update contains backported patches to mitigate these issues. (CVE-2007-3108)

As well, these updated packages fix the following bugs :

* multithreaded applications could cause a segmentation fault or deadlock when calling the random number generator initialization (RAND_poll) in the OpenSSL library, for a large number of threads simultaneously.

* in certain circumstances, if an application using the OpenSSL library reused the SSL session cache for multiple purposes (with various parameters of the SSL protocol), the session parameters could be mismatched.

* a segmentation fault could occur when a corrupted pkcs12 file was being loaded using the 'openssl pkcs12 -in [pkcs12-file]' command, where [pkcs12-file] is the pkcs12 file.

Users of OpenSSL should upgrade to these updated packages, which contain backported patches to resolve these issues.

Note: After installing this update, users are advised to either restart all services that use OpenSSL or restart their system.

Updated mailman packages that fix a security issue and various bugs are now available for Red Hat Enterprise Linux 4.

This update has been rated as having low security impact by the Red Hat Security Response Team.

Mailman is a program used to help manage email discussion lists.

A flaw was found in Mailman. A remote attacker could spoof messages in the error log, and possibly trick the administrator into visiting malicious URLs via a carriage return/line feed sequence in the URI.
(CVE-2006-4624)

As well, these updated packages fix the following bugs :

* canceling a subscription on the confirm subscription request page caused mailman to crash.

* editing the sender filter caused all spam filter rules to be deleted.

* the migrate-fhs script was not included.

* the mailman init script returned a zero (success) exit code even when an incorrect command was given. For example, the 'mailman foo' command returned a zero exit code. In these updated packages the mailmain init script returns the correct exit codes.

Users of Mailman are advised to upgrade to these updated packages, which resolve these issues.

Updated httpd packages that fix a security issue, various bugs, and add enhancements are now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The Apache HTTP Server is a popular and freely-available Web server.

A flaw was found in the Apache HTTP Server mod_proxy module. On sites where a reverse proxy is configured, a remote attacker could send a carefully crafted request that would cause the Apache child process handling that request to crash. On sites where a forward proxy is configured, an attacker could cause a similar crash if a user could be persuaded to visit a malicious site using the proxy. This could lead to a denial of service if using a threaded Multi-Processing Module.
(CVE-2007-3847)

As well, these updated packages fix the following bugs :

* the default '/etc/logrotate.d/httpd' script incorrectly invoked the kill command, instead of using the '/sbin/service httpd restart' command. If you configured the httpd PID to be in a location other than '/var/run/httpd.pid', the httpd logs failed to be rotated. This has been resolved in these updated packages.

* Set-Cookie headers with a status code of 3xx are not forwarded to clients when the 'ProxyErrorOverride' directive is enabled. These responses are overridden at the proxy. Only the responses with status codes of 4xx and 5xx are overridden in these updated packages.

* mod_proxy did not correctly handle percent-encoded characters (ie %20) when configured as a reverse proxy.

* invalid HTTP status codes could be logged if output filters returned errors.

* the 'ProxyTimeout' directive was not inherited across virtual host definitions.

* in some cases the Content-Length header was dropped from HEAD responses. This resulted in certain sites not working correctly with mod_proxy, such as www.windowsupdate.com.

This update adds the following enhancements :

* a new configuration option has been added, 'ServerTokens Full-Release', which adds the package release to the server version string, which is returned in the 'Server' response header.

* a new module has been added, mod_version, which allows configuration files to be written containing sections, which are evaluated only if the version of httpd used matches a specified condition.

Users of httpd are advised to upgrade to these updated packages, which resolve these issues and add these enhancements.

Updated pam packages that fix two security flaws, resolve two bugs, and add an enhancement are now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Pluggable Authentication Modules (PAM) provide a system whereby administrators can set up authentication policies without having to recompile programs that handle authentication.

A flaw was found in the way pam_console set console device permissions. It was possible for various console devices to retain ownership of the console user after logging out, possibly leaking information to another local user. (CVE-2007-1716)

A flaw was found in the way the PAM library wrote account names to the audit subsystem. An attacker could inject strings containing parts of audit messages, which could possibly mislead or confuse audit log parsing tools. (CVE-2007-3102)

As well, these updated packages fix the following bugs :

* the pam_xauth module, which is used for copying the X11 authentication cookie, did not reset the 'XAUTHORITY' variable in certain circumstances, causing unnecessary delays when using su command.

* when calculating password similarity, pam_cracklib disregarded changes to the last character in passwords when 'difok=x' (where 'x' is the number of characters required to change) was configured in '/etc/pam.d/system-auth'. This resulted in password changes that should have been successful to fail with the following error :

BAD PASSWORD: is too similar to the old one

This issue has been resolved in these updated packages.

* the pam_limits module, which provides setting up system resources limits for user sessions, reset the nice priority of the user session to '0' if it was not configured otherwise in the '/etc/security/limits.conf' configuration file.

These updated packages add the following enhancement :

* a new PAM module, pam_tally2, which allows accounts to be locked after a maximum number of failed log in attempts.

All users of PAM should upgrade to these updated packages, which resolve these issues and add this enhancement.

New Wireshark packages that fix various security vulnerabilities and functionality bugs are now available for Red Hat Enterprise Linux 4.
Wireshark was previously known as Ethereal.

This update has been rated as having low security impact by the Red Hat Security Response Team.

Wireshark is a program for monitoring network traffic.

Several denial of service bugs were found in Wireshark's HTTP, iSeries, DCP ETSI, SSL, MMS, DHCP and BOOTP protocol dissectors. It was possible for Wireshark to crash or stop responding if it read a malformed packet off the network. (CVE-2007-3389, CVE-2007-3390, CVE-2007-3391, CVE-2007-3392, CVE-2007-3393)

Wireshark would interpret certain completion codes incorrectly when dissecting IPMI traffic. Additionally, IPMI 2.0 packets would be reported as malformed IPMI traffic.

Users of Wireshark should upgrade to these updated packages containing Wireshark version 0.99.6, which correct these issues.

Updated openssh packages that fix two security issues and various bugs are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. These packages include the core files necessary for both the OpenSSH client and server.

A flaw was found in the way the ssh server wrote account names to the audit subsystem. An attacker could inject strings containing parts of audit messages which could possibly mislead or confuse audit log parsing tools. (CVE-2007-3102)

A flaw was found in the way the OpenSSH server processes GSSAPI authentication requests. When GSSAPI authentication was enabled in OpenSSH server, a remote attacker may have been able to determine if a username is valid. (CVE-2006-5052)

The following bugs were also fixed :

* the ssh daemon did not generate audit messages when an ssh session was closed.

* GSSAPI authentication sometimes failed on clusters using DNS or load-balancing.

* the sftp client and server leaked small amounts of memory in some cases.

* the sftp client didn't properly exit and return non-zero status in batch mode when the destination disk drive was full.

* when restarting the ssh daemon with the initscript, the ssh daemon was sometimes not restarted successfully because the old running ssh daemon was not properly killed.

* with challenge/response authentication enabled, the pam sub-process was not terminated if the user authentication timed out.

All users of openssh should upgrade to these updated packages, which contain patches to correct these issues.

An updated xterm package that corrects a security issue is now available for Red Hat Enterprise Linux 4.

This update has been rated as having low security impact by the Red Hat Security Response Team.

The xterm program is a terminal emulator for the X Window System. It provides DEC VT102 and Tektronix 4014 compatible terminals for programs that cannot use the window system directly.

A bug was found in the way xterm packages were built that caused the pseudo-terminal device files of the xterm emulated terminals to be owned by the incorrect group. This flaw did not affect Red Hat Enterprise Linux 4 Update 4 and earlier. (CVE-2007-2797)

All users of xterm are advised to upgrade to this updated package, which contains a patch to correct this issue.

Updated tcpdump packages that fix a security issue and functionality bugs are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Tcpdump is a command line tool for monitoring network traffic.

Moritz Jodeit discovered a denial of service bug in the tcpdump IEEE 802.11 processing code. An attacker could inject a carefully crafted frame onto the IEEE 802.11 network that could crash a running tcpdump session if a certain link type was explicitly specified.
(CVE-2007-1218)

An integer overflow flaw was found in tcpdump's BGP processing code.
An attacker could execute arbitrary code with the privilege of the pcap user by injecting a crafted frame onto the network.
(CVE-2007-3798)

In addition, the following bugs have been addressed :

* if called with -C and -W switches, tcpdump would create the first savefile with the privileges of the user that executed tcpdump (usually root), rather than with ones of the pcap user. This could result in the inability to save the complete traffic log file properly without the immediate notice of the user running tcpdump.

* the arpwatch service initialization script would exit prematurely, returning a successful exit status incorrectly and preventing the status command from running in case networking is not available.

Users of tcpdump are advised to upgrade to these erratum packages, which contain backported patches that correct these issues.

ID	Name	Severity
67235	CentOS 5 : kernel (CESA-2013:1034)	medium
67183	CentOS 5 / 6 : java-1.6.0-openjdk (CESA-2013:1014)	critical
67098	CentOS 6 : bind (CESA-2013:0689)	high
67097	CentOS 5 : nss (CESA-2013:0214)	high
67096	CentOS 6 : libvirt (CESA-2013:0199)	high
67095	CentOS 6 : kdelibs (CESA-2012:1416)	high
67094	CentOS 6 : icedtea-web (CESA-2012:1132)	high
67093	CentOS 6 : krb5 (CESA-2012:1131)	high
67092	CentOS 5 : xen (CESA-2012:1130)	low
67091	CentOS 5 / 6 : bind (CESA-2012:1123)	high
67090	CentOS 5 : bind97 (CESA-2012:1122)	high
67089	CentOS 5 : php53 (CESA-2012:1047)	high
67088	CentOS 5 / 6 : samba / samba3x (CESA-2012:0533)	medium
67087	CentOS 4 : php (CESA-2012:0071)	medium
67086	CentOS 5 : kernel (CESA-2011:1479)	high
67085	CentOS 5 : ruby (CESA-2011:0909)	medium
67084	CentOS 5 : bind97 (CESA-2011:0845)	medium
67083	CentOS 5 : systemtap (CESA-2011:0841)	low
67082	CentOS 5 : gimp (CESA-2011:0838)	high
67081	CentOS 5 : kernel (CESA-2011:0833)	high
67080	CentOS 5 : kernel (CESA-2010:0723)	high
67079	CentOS 5 : kernel (CESA-2010:0661)	high
67078	CentOS 5 : httpd (CESA-2010:0659)	medium
67077	CentOS 4 / 5 : kdelibs (CESA-2009:1601)	medium
67076	CentOS 5 : cups (CESA-2009:1595)	medium
67075	CentOS 5 : java-1.6.0-openjdk (CESA-2009:1584)	critical
67074	CentOS 4 : httpd (CESA-2009:1580)	high
67073	CentOS 3 / 5 : httpd (CESA-2009:1579)	high
67072	CentOS 3 / 4 : 4Suite (CESA-2009:1572)	medium
67071	CentOS 3 / 4 / 5 : libvorbis (CESA-2009:1561)	critical
67070	CentOS 3 : kernel (CESA-2009:1550)	high
67069	CentOS 3 / 4 / 5 : wget (CESA-2009:1549)	medium
67068	CentOS 5 : kernel (CESA-2009:1548)	high
67067	CentOS 4 : kernel (CESA-2009:1541)	high
67066	CentOS 4 : ntp (CESA-2009:1040)	medium
67065	CentOS 4 : util-linux (CESA-2009:0981)	high
67064	CentOS 4 : nfs-utils (CESA-2009:0955)	high
67063	CentOS 4 : libtiff (CESA-2008:0848)	high
67062	CentOS 4 : autofs5 (CESA-2007:1129)	medium
67061	CentOS 4 : pcre (CESA-2007:1068)	medium
67060	CentOS 4 : openldap (CESA-2007:1038)	high
67059	CentOS 4 : samba (CESA-2007:1016)	high
67058	CentOS 4 : openssl (CESA-2007:1003)	medium
67057	CentOS 4 : mailman (CESA-2007:0779)	low
67056	CentOS 4 : httpd (CESA-2007:0747)	medium
67055	CentOS 4 : pam (CESA-2007:0737)	medium
67054	CentOS 4 : wireshark (CESA-2007:0709)	high
67053	CentOS 4 : openssh (CESA-2007:0703)	medium
67052	CentOS 4 : xterm (CESA-2007:0701)	low
67051	CentOS 4 : tcpdump (CESA-2007:0387)	medium

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