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

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 NULL pointer dereference flaw was found in the sctp_rcv_ootb() function in the Linux kernel Stream Control Transmission Protocol (SCTP) implementation. A remote attacker could send a specially crafted SCTP packet to a target system, resulting in a denial of service. (CVE-2010-0008, Important)

* a NULL pointer dereference flaw was found in the Linux kernel.
During a core dump, the kernel did not check if the Virtual Dynamically-linked Shared Object page was accessible. On Intel 64 and AMD64 systems, a local, unprivileged user could use this flaw to cause a kernel panic by running a crafted 32-bit application.
(CVE-2009-4271, Important)

* an information leak was found in the print_fatal_signal() implementation in the Linux kernel. When '/proc/sys/kernel/print-fatal-signals' is set to 1 (the default value is 0), memory that is reachable by the kernel could be leaked to user-space. This issue could also result in a system crash. Note that this flaw only affected the i386 architecture. (CVE-2010-0003, Moderate)

* on AMD64 systems, it was discovered that the kernel did not ensure the ELF interpreter was available before making a call to the SET_PERSONALITY macro. A local attacker could use this flaw to cause a denial of service by running a 32-bit application that attempts to execute a 64-bit application. (CVE-2010-0307, Moderate)

* missing capability checks were found in the ebtables implementation, used for creating an Ethernet bridge firewall. This could allow a local, unprivileged user to bypass intended capability restrictions and modify ebtables rules. (CVE-2010-0007, Low)

This update also fixes the following bugs :

* under some circumstances, a locking bug could have caused an online ext3 file system resize to deadlock, which may have, in turn, caused the file system or the entire system to become unresponsive. In either case, a reboot was required after the deadlock. With this update, using resize2fs to perform an online resize of an ext3 file system works as expected. (BZ#553135)

* some ATA and SCSI devices were not honoring the barrier=1 mount option, which could result in data loss after a crash or power loss.
This update applies a patch to the Linux SCSI driver to ensure ordered write caching. This solution does not provide cache flushes; however, it does provide data integrity on devices that have no write caching (or where write caching is disabled) and no command queuing. For systems that have command queuing or write cache enabled there is no guarantee of data integrity after a crash. (BZ#560563)

* it was found that lpfc_find_target() could loop continuously when scanning a list of nodes due to a missing spinlock. This missing spinlock allowed the list to be changed after the list_empty() test, resulting in a NULL value, causing the loop. This update adds the spinlock, resolving the issue. (BZ#561453)

* the fix for CVE-2009-4538 provided by RHSA-2010:0020 introduced a regression, preventing Wake on LAN (WoL) working for network devices using the Intel PRO/1000 Linux driver, e1000e. Attempting to configure WoL for such devices resulted in the following error, even when configuring valid options :

'Cannot set new wake-on-lan settings: Operation not supported not setting wol'

This update resolves this regression, and WoL now works as expected for network devices using the e1000e driver. (BZ#565496)

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 cpio package that fixes two security issues is now available for Red Hat Enterprise Linux 3.

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

GNU cpio copies files into or out of a cpio or tar archive.

A heap-based buffer overflow flaw was found in the way cpio expanded archive files. If a user were tricked into expanding a specially crafted archive, it could cause the cpio executable to crash or execute arbitrary code with the privileges of the user running cpio.
(CVE-2010-0624)

Red Hat would like to thank Jakob Lell for responsibly reporting the CVE-2010-0624 issue.

A stack-based buffer overflow flaw was found in the way cpio expanded large archive files. If a user expanded a specially crafted archive, it could cause the cpio executable to crash. This issue only affected 64-bit platforms. (CVE-2005-4268)

Users of cpio are advised to upgrade to this updated package, which contains backported patches to correct these issues.

An updated cpio package that fixes one security issue 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.

GNU cpio copies files into or out of a cpio or tar archive.

A heap-based buffer overflow flaw was found in the way cpio expanded archive files. If a user were tricked into expanding a specially crafted archive, it could cause the cpio executable to crash or execute arbitrary code with the privileges of the user running cpio.
(CVE-2010-0624)

Red Hat would like to thank Jakob Lell for responsibly reporting this issue.

Users of cpio are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

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

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

The GNU tar program saves many files together in one archive and can restore individual files (or all of the files) from that archive.

A heap-based buffer overflow flaw was found in the way tar expanded archive files. If a user were tricked into expanding a specially crafted archive, it could cause the tar executable to crash or execute arbitrary code with the privileges of the user running tar.
(CVE-2010-0624)

Red Hat would like to thank Jakob Lell for responsibly reporting this issue.

Users of tar are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

An updated cpio package that fixes two security issues is 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.

GNU cpio copies files into or out of a cpio or tar archive.

A heap-based buffer overflow flaw was found in the way cpio expanded archive files. If a user were tricked into expanding a specially crafted archive, it could cause the cpio executable to crash or execute arbitrary code with the privileges of the user running cpio.
(CVE-2010-0624)

Red Hat would like to thank Jakob Lell for responsibly reporting the CVE-2010-0624 issue.

A denial of service flaw was found in the way cpio expanded archive files. If a user expanded a specially crafted archive, it could cause the cpio executable to crash. (CVE-2007-4476)

Users of cpio are advised to upgrade to this updated package, which contains backported patches to correct these issues.

An updated tar package that fixes two security issues is now available for Red Hat Enterprise Linux 4 and 5.

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

The GNU tar program saves many files together in one archive and can restore individual files (or all of the files) from that archive.

A heap-based buffer overflow flaw was found in the way tar expanded archive files. If a user were tricked into expanding a specially crafted archive, it could cause the tar executable to crash or execute arbitrary code with the privileges of the user running tar.
(CVE-2010-0624)

Red Hat would like to thank Jakob Lell for responsibly reporting the CVE-2010-0624 issue.

A denial of service flaw was found in the way tar expanded archive files. If a user expanded a specially crafted archive, it could cause the tar executable to crash. (CVE-2007-4476)

Users of tar are advised to upgrade to this updated package, which contains backported patches to correct these issues.

Updated pango and evolution28-pango packages that fix one security issue are 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.

Pango is a library used for the layout and rendering of internationalized text.

An input sanitization flaw, leading to an array index error, was found in the way the Pango font rendering library synthesized the Glyph Definition (GDEF) table from a font's character map and the Unicode property database. If an attacker created a specially crafted font file and tricked a local, unsuspecting user into loading the font file in an application that uses the Pango font rendering library, it could cause that application to crash. (CVE-2010-0421)

Users of pango and evolution28-pango are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, you must restart your system or restart your X session for this update to take effect.

Updated cups packages that fix one security issue 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.

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

It was discovered that the Red Hat Security Advisory RHSA-2009:1595 did not fully correct the use-after-free flaw in the way CUPS handled references in its file descriptors-handling interface. A remote attacker could send specially crafted queries to the CUPS server, causing it to crash. (CVE-2010-0302)

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

Updated kvm packages that fix two security issues and two 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.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel.

A flaw was found in the way the x86 emulator loaded segment selectors (used for memory segmentation and protection) into segment registers.
In some guest system configurations, an unprivileged guest user could leverage this flaw to crash the guest or possibly escalate their privileges within the guest. (CVE-2010-0419)

The x86 emulator implementation was missing a check for the Current Privilege Level (CPL) while accessing debug registers. An unprivileged user in a guest could leverage this flaw to crash the guest.
(CVE-2009-3722)

This update also fixes the following bugs :

With Red Hat Enterprise Virtualization, the virtio_blk_dma_restart_bh() function was previously used to handle write errors; however, a bug fix provided by the RHSA-2009:1659 update meant that read errors would also have to be handled by this function.
The function was not updated for this, causing read errors to be resubmitted as writes. This caused guest image corruption in some cases.

Additionally, the return values of the bdrv_aio_write() and bdrv_aio_read() functions were ignored. If an immediate failure occurred in one of these functions, errors would be missed and the guest could hang or read corrupted data. (BZ#562776)

All KVM users should upgrade to these updated packages, which contain backported patches to resolve these issues. Note: The procedure in the Solution section must be performed before this update will take effect.

Updated systemtap packages that fix two 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.

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 flaw was found in the SystemTap compile server, stap-server, an optional component of SystemTap. This server did not adequately sanitize input provided by the stap-client program, which may allow a remote user to execute arbitrary shell code with the privileges of the compile server process, which could possibly be running as the root user. (CVE-2009-4273)

Note: stap-server is not run by default. It must be started by a user or administrator.

A buffer overflow flaw was found in SystemTap's tapset __get_argv() function. If a privileged user ran a SystemTap script that called this function, a local, unprivileged user could, while that script is still running, trigger this flaw and cause memory corruption by running a command with a large argument list, which may lead to a system crash or, potentially, arbitrary code execution with root privileges.
(CVE-2010-0411)

Note: SystemTap scripts that call __get_argv(), being a privileged function, can only be executed by the root user or users in the stapdev group. As well, if such a script was compiled and installed by root, users in the stapusr group would also be able to execute it.

SystemTap users should upgrade to these updated packages, which contain backported patches to correct these issues.

Updated systemtap packages that fix a security issue 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.

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 buffer overflow flaw was found in SystemTap's tapset __get_argv() function. If a privileged user ran a SystemTap script that called this function, a local, unprivileged user could, while that script is still running, trigger this flaw and cause memory corruption by running a command with a large argument list, which may lead to a system crash or, potentially, arbitrary code execution with root privileges.
(CVE-2010-0411)

Note: SystemTap scripts that call __get_argv(), being a privileged function, can only be executed by the root user or users in the stapdev group. As well, if such a script was compiled and installed by root, users in the stapusr group would also be able to execute it.

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

An updated sudo package that fixes two security issues is 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 sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root.

A privilege escalation flaw was found in the way sudo handled the sudoedit pseudo-command. If a local user were authorized by the sudoers file to use this pseudo-command, they could possibly leverage this flaw to execute arbitrary code with the privileges of the root user. (CVE-2010-0426)

The sudo utility did not properly initialize supplementary groups when the 'runas_default' option (in the sudoers file) was used. If a local user were authorized by the sudoers file to perform their sudo commands under the account specified with 'runas_default', they would receive the root user's supplementary groups instead of those of the intended target user, giving them unintended privileges.
(CVE-2010-0427)

Users of sudo should upgrade to this updated package, which contains backported patches to correct these issues.

Updated mysql 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.

MySQL is a multi-user, multi-threaded SQL database server. It consists of the MySQL server daemon (mysqld) and many client programs and libraries.

It was discovered that the MySQL client ignored certain SSL certificate verification errors when connecting to servers. A man-in-the-middle attacker could use this flaw to trick MySQL clients into connecting to a spoofed MySQL server. (CVE-2009-4028)

Note: This fix may uncover previously hidden SSL configuration issues, such as incorrect CA certificates being used by clients or expired server certificates. This update should be carefully tested in deployments where SSL connections are used.

A flaw was found in the way MySQL handled SELECT statements with subqueries in the WHERE clause, that assigned results to a user variable. A remote, authenticated attacker could use this flaw to crash the MySQL server daemon (mysqld). This issue only caused a temporary denial of service, as the MySQL daemon was automatically restarted after the crash. (CVE-2009-4019)

When the 'datadir' option was configured with a relative path, MySQL did not properly check paths used as arguments for the DATA DIRECTORY and INDEX DIRECTORY directives. An authenticated attacker could use this flaw to bypass the restriction preventing the use of subdirectories of the MySQL data directory being used as DATA DIRECTORY and INDEX DIRECTORY paths. (CVE-2009-4030)

Note: Due to the security risks and previous security issues related to the use of the DATA DIRECTORY and INDEX DIRECTORY directives, users not depending on this feature should consider disabling it by adding 'symbolic-links=0' to the '[mysqld]' section of the 'my.cnf' configuration file. In this update, an example of such a configuration was added to the default 'my.cnf' file.

All MySQL users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. After installing this update, the MySQL server daemon (mysqld) will be restarted automatically.

Updated NetworkManager packages that fix two 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.

NetworkManager is a network link manager that attempts to keep a wired or wireless network connection active at all times.

A missing network certificate verification flaw was found in NetworkManager. If a user created a WPA Enterprise or 802.1x wireless network connection that was verified using a Certificate Authority (CA) certificate, and then later removed that CA certificate file, NetworkManager failed to verify the identity of the network on the following connection attempts. In these situations, a malicious wireless network spoofing the original network could trick a user into disclosing authentication credentials or communicating over an untrusted network. (CVE-2009-4144)

An information disclosure flaw was found in NetworkManager's nm-connection-editor D-Bus interface. If a user edited network connection options using nm-connection-editor, a summary of those changes was broadcasted over the D-Bus message bus, possibly disclosing sensitive information (such as wireless network authentication credentials) to other local users. (CVE-2009-4145)

Users of NetworkManager should upgrade to these updated packages, which contain backported patches to correct these issues.

Updated pidgin packages that fix three security issues are now available for Red Hat Enterprise Linux 4 and 5.

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

Pidgin is an instant messaging program which can log in to multiple accounts on multiple instant messaging networks simultaneously.

An input sanitization flaw was found in the way Pidgin's MSN protocol implementation handled MSNSLP invitations. A remote attacker could send a specially crafted INVITE request that would cause a denial of service (memory corruption and Pidgin crash). (CVE-2010-0277)

A denial of service flaw was found in Finch's XMPP chat implementation, when using multi-user chat. If a Finch user in a multi-user chat session were to change their nickname to contain the HTML 'br' element, it would cause Finch to crash. (CVE-2010-0420)

Red Hat would like to thank Sadrul Habib Chowdhury of the Pidgin project for responsibly reporting the CVE-2010-0420 issue.

A denial of service flaw was found in the way Pidgin processed emoticon images. A remote attacker could flood the victim with emoticon images during mutual communication, leading to excessive CPU use. (CVE-2010-0423)

These packages upgrade Pidgin to version 2.6.6. Refer to the Pidgin release notes for a full list of changes:
http://developer.pidgin.im/wiki/ChangeLog

All Pidgin users are advised to upgrade to these updated packages, which correct these issues. Pidgin must be restarted for this update to take effect.

Updated SeaMonkey packages that fix several security issues are now available for Red Hat Enterprise Linux 3 and 4.

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

SeaMonkey is an open source Web browser, email and newsgroup client, IRC chat client, and HTML editor.

A use-after-free flaw was found in SeaMonkey. Under low memory conditions, visiting a web page containing malicious content could result in SeaMonkey executing arbitrary code with the privileges of the user running SeaMonkey. (CVE-2009-1571)

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause SeaMonkey to crash or, potentially, execute arbitrary code with the privileges of the user running SeaMonkey. (CVE-2010-0159)

All SeaMonkey users should upgrade to these updated packages, which correct these issues. After installing the update, SeaMonkey must be restarted for the changes to take effect.

Updated firefox packages that fix several security issues 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.

Mozilla Firefox is an open source Web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox.

A use-after-free flaw was found in Firefox. Under low memory conditions, visiting a web page containing malicious content could result in Firefox executing arbitrary code with the privileges of the user running Firefox. (CVE-2009-1571)

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2010-0159, CVE-2010-0160)

Two flaws were found in the way certain content was processed. An attacker could use these flaws to create a malicious web page that could bypass the same-origin policy, or possibly run untrusted JavaScript. (CVE-2009-3988, CVE-2010-0162)

For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 3.0.18. You can find a link to the Mozilla advisories in the References section of this errata.

All Firefox users should upgrade to these updated packages, which contain Firefox version 3.0.18, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.

Updated mysql packages that fix several 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.

MySQL is a multi-user, multi-threaded SQL database server. It consists of the MySQL server daemon (mysqld) and many client programs and libraries.

Multiple flaws were discovered in the way MySQL handled symbolic links to tables created using the DATA DIRECTORY and INDEX DIRECTORY directives in CREATE TABLE statements. An attacker with CREATE and DROP table privileges and shell access to the database server could use these flaws to escalate their database privileges, or gain access to tables created by other database users. (CVE-2008-4098, CVE-2009-4030)

Note: Due to the security risks and previous security issues related to the use of the DATA DIRECTORY and INDEX DIRECTORY directives, users not depending on this feature should consider disabling it by adding 'symbolic-links=0' to the '[mysqld]' section of the 'my.cnf' configuration file. In this update, an example of such a configuration was added to the default 'my.cnf' file.

An insufficient HTML entities quoting flaw was found in the mysql command line client's HTML output mode. If an attacker was able to inject arbitrary HTML tags into data stored in a MySQL database, which was later retrieved using the mysql command line client and its HTML output mode, they could perform a cross-site scripting (XSS) attack against victims viewing the HTML output in a web browser.
(CVE-2008-4456)

Multiple format string flaws were found in the way the MySQL server logged user commands when creating and deleting databases. A remote, authenticated attacker with permissions to CREATE and DROP databases could use these flaws to formulate a specially crafted SQL command that would cause a temporary denial of service (open connections to mysqld are terminated). (CVE-2009-2446)

Note: To exploit the CVE-2009-2446 flaws, the general query log (the mysqld '--log' command line option or the 'log' option in 'my.cnf') must be enabled. This logging is not enabled by default.

All MySQL users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. After installing this update, the MySQL server daemon (mysqld) will be restarted automatically.

Updated openoffice.org packages that correct 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.

OpenOffice.org is an office productivity suite that includes desktop applications, such as a word processor, spreadsheet application, presentation manager, formula editor, and a drawing program.

An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way OpenOffice.org parsed XPM files. An attacker could create a specially crafted document, which once opened by a local, unsuspecting user, could lead to arbitrary code execution with the permissions of the user running OpenOffice.org. Note: This flaw affects embedded XPM files in OpenOffice.org documents as well as stand-alone XPM files. (CVE-2009-2949)

An integer underflow flaw and a boundary error flaw, both possibly leading to a heap-based buffer overflow, were found in the way OpenOffice.org parsed certain records in Microsoft Word documents. An attacker could create a specially crafted Microsoft Word document, which once opened by a local, unsuspecting user, could cause OpenOffice.org to crash or, potentially, execute arbitrary code with the permissions of the user running OpenOffice.org. (CVE-2009-3301, CVE-2009-3302)

A heap-based buffer overflow flaw, leading to memory corruption, was found in the way OpenOffice.org parsed GIF files. An attacker could create a specially crafted document, which once opened by a local, unsuspecting user, could cause OpenOffice.org to crash. Note: This flaw affects embedded GIF files in OpenOffice.org documents as well as stand-alone GIF files. (CVE-2009-2950)

All users of OpenOffice.org are advised to upgrade to these updated packages, which contain backported patches to correct these issues.
All running instances of OpenOffice.org applications must be restarted for this update to take effect.

An updated HelixPlayer package that fixes several 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.

HelixPlayer is a media player.

Multiple buffer and integer overflow flaws were found in the way HelixPlayer processed Graphics Interchange Format (GIF) files. An attacker could create a specially crafted GIF file which would cause HelixPlayer to crash or, potentially, execute arbitrary code when opened. (CVE-2009-4242, CVE-2009-4245)

A buffer overflow flaw was found in the way HelixPlayer processed Synchronized Multimedia Integration Language (SMIL) files. An attacker could create a specially crafted SMIL file which would cause HelixPlayer to crash or, potentially, execute arbitrary code when opened. (CVE-2009-4257)

A buffer overflow flaw was found in the way HelixPlayer handled the Real Time Streaming Protocol (RTSP) SET_PARAMETER directive. A malicious RTSP server could use this flaw to crash HelixPlayer or, potentially, execute arbitrary code. (CVE-2009-4248)

Multiple buffer overflow flaws were discovered in the way HelixPlayer handled RuleBook structures in media files and RTSP streams. Specially crafted input could cause HelixPlayer to crash or, potentially, execute arbitrary code. (CVE-2009-4247, CVE-2010-0417)

A buffer overflow flaw was found in the way HelixPlayer performed URL un-escaping. A specially crafted URL string could cause HelixPlayer to crash or, potentially, execute arbitrary code. (CVE-2010-0416)

All HelixPlayer users are advised to upgrade to this updated package, which contains backported patches to resolve these issues. All running instances of HelixPlayer must be restarted for this update to take effect.

Updated kvm 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.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel.

The x86 emulator implementation was missing a check for the Current Privilege Level (CPL) and I/O Privilege Level (IOPL). A user in a guest could leverage these flaws to cause a denial of service (guest crash) or possibly escalate their privileges within that guest.
(CVE-2010-0298, CVE-2010-0306)

A flaw was found in the Programmable Interval Timer (PIT) emulation.
Access to the internal data structure pit_state, which represents the data state of the emulated PIT, was not properly validated in the pit_ioport_read() function. A privileged guest user could use this flaw to crash the host. (CVE-2010-0309)

A flaw was found in the USB passthrough handling code. A specially crafted USB packet sent from inside a guest could be used to trigger a buffer overflow in the usb_host_handle_control() function, which runs under the QEMU-KVM context on the host. A user in a guest could leverage this flaw to cause a denial of service (guest hang or crash) or possibly escalate their privileges within the host. (CVE-2010-0297)

This update also fixes the following bugs :

* pvclock MSR values were not preserved during remote migration, causing time drift for guests. (BZ#537028)

* SMBIOS table 4 data is now generated for Windows guests. (BZ#545874)

* if the qemu-kvm '-net user' option was used, unattended Windows XP installations did not receive an IP address after reboot. (BZ#546562)

* when being restored from migration, a race condition caused Windows Server 2008 R2 guests to hang during shutdown. (BZ#546563)

* the kernel symbol checking on the kvm-kmod build process has a safety check for ABI changes. (BZ#547293)

* on hosts without high-res timers, Windows Server 2003 guests experienced significant time drift. (BZ#547625)

* in some situations, installing Windows Server 2008 R2 from an ISO image resulted in a blue screen 'BAD_POOL_HEADER' stop error.
(BZ#548368)

* a bug in the grow_refcount_table() error handling caused infinite recursion in some cases. This caused the qemu-kvm process to hang and eventually crash. (BZ#552159)

* for Windows Server 2003 R2, Service Pack 2, 32-bit guests, an 'unhandled vm exit' error could occur during reboot on some systems.
(BZ#552518)

* for Windows guests, QEMU could attempt to stop a stopped audio device, resulting in a 'snd_playback_stop: ASSERT playback_channel->base.active failed' error. (BZ#552519)

* the Hypercall driver did not reset the device on power-down.
(BZ#552528)

* mechanisms have been added to make older savevm versions to be emitted in some cases. (BZ#552529)

* an error in the Makefile prevented users from using the source RPM to install KVM. (BZ#552530)

* guests became unresponsive and could use up to 100% CPU when running certain benchmark tests with more than 7 guests running simultaneously. (BZ#553249)

* QEMU could terminate randomly with virtio-net and SMP enabled.
(BZ#561022)

All KVM users should upgrade to these updated packages, which contain backported patches to resolve these issues. Note: The procedure in the Solution section must be performed before this update will take effect.

Updated kernel packages that fix multiple security issues and three bugs 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 :

* an array index error was found in the gdth driver in the Linux kernel. A local user could send a specially crafted IOCTL request that would cause a denial of service or, possibly, privilege escalation.
(CVE-2009-3080, Important)

* a flaw was found in the collect_rx_frame() function in the HiSax ISDN driver (hfc_usb) in the Linux kernel. An attacker could use this flaw to send a specially crafted HDLC packet that could trigger a buffer out of bounds, possibly resulting in a denial of service.
(CVE-2009-4005, Important)

* permission issues were found in the megaraid_sas driver (for SAS based RAID controllers) in the Linux kernel. The 'dbg_lvl' and 'poll_mode_io' files on the sysfs file system ('/sys/') had world-writable permissions. This could allow local, unprivileged users to change the behavior of the driver. (CVE-2009-3889, CVE-2009-3939, Moderate)

* a buffer overflow flaw was found in the hfs_bnode_read() function in the HFS file system implementation in the Linux kernel. This could lead to a denial of service if a user browsed a specially crafted HFS file system, for example, by running 'ls'. (CVE-2009-4020, Low)

This update also fixes the following bugs :

* if a process was using ptrace() to trace a multi-threaded process, and that multi-threaded process dumped its core, the process performing the trace could hang in wait4(). This issue could be triggered by running 'strace -f' on a multi-threaded process that was dumping its core, resulting in the strace command hanging. (BZ#555869)

* a bug in the ptrace() implementation could have, in some cases, caused ptrace_detach() to create a zombie process if the process being traced was terminated with a SIGKILL signal. (BZ#555869)

* the RHSA-2010:0020 update resolved an issue (CVE-2009-4537) in the Realtek r8169 Ethernet driver. This update implements a better solution for that issue. Note: This is not a security regression. The original fix was complete. This update is adding the official upstream fix. (BZ#556406)

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.

The remote host is running a release of CentOS that is not at the latest Update Set. Since updating CentOS brings a host up to the most recent Update Set, this means that it has not been updated recently, and is likely to be affected by multiple vulnerabilities.

Updated bind packages that fix two 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.

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 flaw was found in the BIND DNSSEC NSEC/NSEC3 validation code. If BIND was running as a DNSSEC-validating resolver, it could incorrectly cache NXDOMAIN responses, as if they were valid, for records proven by NSEC or NSEC3 to exist. A remote attacker could use this flaw to cause a BIND server to return the bogus, cached NXDOMAIN responses for valid records and prevent users from retrieving those records (denial of service). (CVE-2010-0097)

The original fix for CVE-2009-4022 was found to be incomplete. BIND was incorrectly caching certain responses without performing proper DNSSEC validation. CNAME and DNAME records could be cached, without proper DNSSEC validation, when received from processing recursive client queries that requested DNSSEC records but indicated that checking should be disabled. A remote attacker could use this flaw to bypass the DNSSEC validation check and perform a cache poisoning attack if the target BIND server was receiving such client queries.
(CVE-2010-0290)

All BIND users are advised to upgrade to these updated packages, which contain a backported patch to resolve these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

An updated gzip package that fixes one 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.

The gzip package provides the GNU gzip data compression program.

An integer underflow flaw, leading to an array index error, was found in the way gzip expanded archive files compressed with the Lempel-Ziv-Welch (LZW) compression algorithm. If a victim expanded a specially crafted archive, it could cause gzip to crash or, potentially, execute arbitrary code with the privileges of the user running gzip. This flaw only affects 64-bit systems. (CVE-2010-0001)

Red Hat would like to thank Aki Helin of the Oulu University Secure Programming Group for responsibly reporting this flaw.

Users of gzip should upgrade to this updated package, which contains a backported patch to correct this issue.

Updated openssl packages that fix two 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.

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

It was found that the OpenSSL library did not properly re-initialize its internal state in the SSL_library_init() function after previous calls to the CRYPTO_cleanup_all_ex_data() function, which would cause a memory leak for each subsequent SSL connection. This flaw could cause server applications that call those functions during reload, such as a combination of the Apache HTTP Server, mod_ssl, PHP, and cURL, to consume all available memory, resulting in a denial of service. (CVE-2009-4355)

Dan Kaminsky found that browsers could accept 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 a browser. OpenSSL now disables the use of the MD2 algorithm inside signatures by default. (CVE-2009-2409)

All OpenSSL users should upgrade to these updated packages, which contain backported patches to resolve these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

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 :

* an array index error was found in the gdth driver. A local user could send a specially crafted IOCTL request that would cause a denial of service or, possibly, privilege escalation. (CVE-2009-3080, Important)

* a flaw was found in the FUSE implementation. When a system is low on memory, fuse_put_request() could dereference an invalid pointer, possibly leading to a local denial of service or privilege escalation.
(CVE-2009-4021, Important)

* Tavis Ormandy discovered a deficiency in the fasync_helper() implementation. This could allow a local, unprivileged user to leverage a use-after-free of locked, asynchronous file descriptors to cause a denial of service or privilege escalation. (CVE-2009-4141, Important)

* the Parallels Virtuozzo Containers team reported the RHSA-2009:1243 update introduced two flaws in the routing implementation. If an attacker was able to cause a large enough number of collisions in the routing hash table (via specially crafted packets) for the emergency route flush to trigger, a deadlock could occur. Secondly, if the kernel routing cache was disabled, an uninitialized pointer would be left behind after a route lookup, leading to a kernel panic.
(CVE-2009-4272, Important)

* the RHSA-2009:0225 update introduced a rewrite attack flaw in the do_coredump() function. A local attacker able to guess the file name a process is going to dump its core to, prior to the process crashing, could use this flaw to append data to the dumped core file. This issue only affects systems that have '/proc/sys/fs/suid_dumpable' set to 2 (the default value is 0). (CVE-2006-6304, Moderate)

The fix for CVE-2006-6304 changes the expected behavior: With suid_dumpable set to 2, the core file will not be recorded if the file already exists. For example, core files will not be overwritten on subsequent crashes of processes whose core files map to the same name.

* an information leak was found in the Linux kernel. On AMD64 systems, 32-bit processes could access and read certain 64-bit registers by temporarily switching themselves to 64-bit mode. (CVE-2009-2910, Moderate)

* the RHBA-2008:0314 update introduced N_Port ID Virtualization (NPIV) support in the qla2xxx driver, resulting in two new sysfs pseudo files, '/sys/class/scsi_host/[a qla2xxx host]/vport_create' and 'vport_delete'. These two files were world-writable by default, allowing a local user to change SCSI host attributes. This flaw only affects systems using the qla2xxx driver and NPIV capable hardware.
(CVE-2009-3556, Moderate)

* permission issues were found in the megaraid_sas driver. The 'dbg_lvl' and 'poll_mode_io' files on the sysfs file system ('/sys/') had world-writable permissions. This could allow local, unprivileged users to change the behavior of the driver. (CVE-2009-3889, CVE-2009-3939, Moderate)

* a NULL pointer dereference flaw was found in the firewire-ohci driver used for OHCI compliant IEEE 1394 controllers. A local, unprivileged user with access to /dev/fw* files could issue certain IOCTL calls, causing a denial of service or privilege escalation. The FireWire modules are blacklisted by default, and if enabled, only root has access to the files noted above by default. (CVE-2009-4138, Moderate)

* a buffer overflow flaw was found in the hfs_bnode_read() function in the HFS file system implementation. This could lead to a denial of service if a user browsed a specially crafted HFS file system, for example, by running 'ls'. (CVE-2009-4020, Low)

Bug fix documentation for this update will be available shortly from www.redhat.com/docs/en-US/errata/RHSA-2010-0046/Kernel_Security_Update / index.html

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 pidgin packages that fix a security issue are now available for Red Hat Enterprise Linux 4 and 5.

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

Pidgin is an instant messaging program which can log in to multiple accounts on multiple instant messaging networks simultaneously.

A directory traversal flaw was discovered in Pidgin's MSN protocol implementation. A remote attacker could send a specially crafted emoticon image download request that would cause Pidgin to disclose an arbitrary file readable to the user running Pidgin. (CVE-2010-0013)

These packages upgrade Pidgin to version 2.6.5. Refer to the Pidgin release notes for a full list of changes:
http://developer.pidgin.im/wiki/ChangeLog

All Pidgin users should upgrade to these updated packages, which correct this issue. Pidgin must be restarted for this update to take effect.

Updated gcc and gcc4 packages that fix one security issue are 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.

The gcc and gcc4 packages include, among others, C, C++, and Java GNU compilers and related support libraries. libgcj contains a copy of GNU Libtool's libltdl library.

A flaw was found in the way GNU Libtool's libltdl library looked for libraries to load. It was possible for libltdl to load a malicious library from the current working directory. In certain configurations, if a local attacker is able to trick a local user into running a Java application (which uses a function to load native libraries, such as System.loadLibrary) from within an attacker-controlled directory containing a malicious library or module, the attacker could possibly execute arbitrary code with the privileges of the user running the Java application. (CVE-2009-3736)

All gcc and gcc4 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running Java applications using libgcj must be restarted for this update to take effect.

Updated kernel packages that fix multiple 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 flaw was found in each of the following Intel PRO/1000 Linux drivers in the Linux kernel: e1000 and e1000e. A remote attacker using packets larger than the MTU could bypass the existing fragment check, resulting in partial, invalid frames being passed to the network stack. These flaws could also possibly be used to trigger a remote denial of service. (CVE-2009-4536, CVE-2009-4538, Important)

* a flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. Receiving overly-long frames with network cards supported by this driver could possibly result in a remote denial of service.
(CVE-2009-4537, Important)

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 php packages that fix several security issues are 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.

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

Multiple missing input sanitization flaws were discovered in PHP's exif extension. A specially crafted image file could cause the PHP interpreter to crash or, possibly, disclose portions of its memory when a PHP script tried to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2009-2687, CVE-2009-3292)

A missing input sanitization flaw, leading to a buffer overflow, was discovered in PHP's gd library. A specially crafted GD image file could cause the PHP interpreter to crash or, possibly, execute arbitrary code when opened. (CVE-2009-3546)

It was discovered that PHP did not limit the maximum number of files that can be uploaded in one request. A remote attacker could use this flaw to instigate a denial of service by causing the PHP interpreter to use lots of system resources dealing with requests containing large amounts of files to be uploaded. This vulnerability depends on file uploads being enabled (which it is, in the default PHP configuration).
(CVE-2009-4017)

Note: This update introduces a new configuration option, max_file_uploads, used for limiting the number of files that can be uploaded in one request. By default, the limit is 20 files per request.

It was discovered that PHP was affected by the previously published 'null prefix attack', caused by incorrect handling of NUL 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 PHP into accepting it by mistake. (CVE-2009-3291)

It was discovered that PHP's htmlspecialchars() function did not properly recognize partial multi-byte sequences for some multi-byte encodings, sending them to output without them being escaped. An attacker could use this flaw to perform a cross-site scripting attack.
(CVE-2009-4142)

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 krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 3, 4, and 5, and Red Hat Enterprise Linux 4.7, 5.2, and 5.3 Extended Update Support.

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

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).

Multiple integer underflow flaws, leading to heap-based corruption, were found in the way the MIT Kerberos Key Distribution Center (KDC) decrypted ciphertexts encrypted with the Advanced Encryption Standard (AES) and ARCFOUR (RC4) encryption algorithms. If a remote KDC client were able to provide a specially crafted AES- or RC4-encrypted ciphertext or texts, it could potentially lead to either a denial of service of the central KDC (KDC crash or abort upon processing the crafted ciphertext), or arbitrary code execution with the privileges of the KDC (i.e., root privileges). (CVE-2009-4212)

All krb5 users should upgrade to these updated packages, which contain a backported patch to correct these issues. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.

Updated kernel packages that fix multiple 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.

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

This update fixes the following security issues :

* a flaw was found in the IPv6 Extension Header (EH) handling implementation in the Linux kernel. The skb->dst data structure was not properly validated in the ipv6_hop_jumbo() function. This could possibly lead to a remote denial of service. (CVE-2007-4567, Important)

* a flaw was found in each of the following Intel PRO/1000 Linux drivers in the Linux kernel: e1000 and e1000e. A remote attacker using packets larger than the MTU could bypass the existing fragment check, resulting in partial, invalid frames being passed to the network stack. These flaws could also possibly be used to trigger a remote denial of service. (CVE-2009-4536, CVE-2009-4538, Important)

* a flaw was found in the Realtek r8169 Ethernet driver in the Linux kernel. Receiving overly-long frames with network cards supported by this driver could possibly result in a remote denial of service.
(CVE-2009-4537, Important)

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 dbus packages that fix a security issue 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.

D-Bus is a system for sending messages between applications. It is used for the system-wide message bus service and as a per-user-login-session messaging facility.

It was discovered that the Red Hat Security Advisory RHSA-2009:0008 did not correctly fix the denial of service flaw in the system for sending messages between applications. A local user could use this flaw to send a message with a malformed signature to the bus, causing the bus (and, consequently, any process using libdbus to receive messages) to abort. (CVE-2009-1189)

Note: Users running any application providing services over the system message bus are advised to test this update carefully before deploying it in production environments.

All users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. For the update to take effect, all running instances of dbus-daemon and all running applications using the libdbus library must be restarted, or the system rebooted.

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 :

* NULL pointer dereference flaws in the r128 driver. Checks to test if the Concurrent Command Engine state was initialized were missing in private IOCTL functions. An attacker could use these flaws to cause a local denial of service or escalate their privileges. (CVE-2009-3620, Important)

* a NULL pointer dereference flaw in the NFSv4 implementation. Several NFSv4 file locking functions failed to check whether a file had been opened on the server before performing locking operations on it. A local user on a system with an NFSv4 share mounted could possibly use this flaw to cause a denial of service or escalate their privileges.
(CVE-2009-3726, Important)

* a flaw in tcf_fill_node(). A certain data structure in this function was not initialized properly before being copied to user-space. This could lead to an information leak. (CVE-2009-3612, Moderate)

* unix_stream_connect() did not check if a UNIX domain socket was in the shutdown state. This could lead to a deadlock. A local, unprivileged user could use this flaw to cause a denial of service.
(CVE-2009-3621, Moderate)

Knowledgebase DOC-20536 has steps to mitigate NULL pointer dereference flaws.

Bug fixes :

* frequently changing a CPU between online and offline caused a kernel panic on some systems. (BZ#545583)

* for the LSI Logic LSI53C1030 Ultra320 SCSI controller, read commands sent could receive incorrect data, preventing correct data transfer.
(BZ#529308)

* pciehp could not detect PCI Express hot plug slots on some systems.
(BZ#530383)

* soft lockups: inotify race and contention on dcache_lock.
(BZ#533822, BZ#537019)

* priority ordered lists are now used for threads waiting for a given mutex. (BZ#533858)

* a deadlock in DLM could cause GFS2 file systems to lock up.
(BZ#533859)

* use-after-free bug in the audit subsystem crashed certain systems when running usermod. (BZ#533861)

* on certain hardware configurations, a kernel panic when the Broadcom iSCSI offload driver (bnx2i.ko and cnic.ko) was loaded. (BZ#537014)

* qla2xxx: Enabled MSI-X, and correctly handle the module parameter to control it. This improves performance for certain systems. (BZ#537020)

* system crash when reading the cpuaffinity file on a system.
(BZ#537346)

* suspend-resume problems on systems with lots of logical CPUs, e.g.
BX-EX. (BZ#539674)

* off-by-one error in the legacy PCI bus check. (BZ#539675)

* TSC was not made available on systems with multi-clustered APICs.
This could cause slow performance for time-sensitive applications.
(BZ#539676)

* ACPI: ARB_DISABLE now disabled on platforms that do not need it.
(BZ#539677)

* fix node to core and power-aware scheduling issues, and a kernel panic during boot on certain AMD Opteron processors. (BZ#539678, BZ#540469, BZ#539680, BZ#539682)

* APIC timer interrupt issues on some AMD Opteron systems prevented achieving full power savings. (BZ#539681)

* general OProfile support for some newer Intel processors.
(BZ#539683)

* system crash during boot when NUMA is enabled on systems using MC and kernel-xen. (BZ#539684)

* on some larger systems, performance issues due to a spinlock.
(BZ#539685)

* APIC errors when IOMMU is enabled on some AMD Opteron systems.
(BZ#539687)

* on some AMD Opteron systems, repeatedly taking a CPU offline then online caused a system hang. (BZ#539688)

* I/O page fault errors on some systems. (BZ#539689)

* certain memory configurations could cause the kernel-xen kernel to fail to boot on some AMD Opteron systems. (BZ#539690)

* NMI watchdog is now disabled for offline CPUs. (BZ#539691)

* duplicate directories in /proc/acpi/processor/ on BX-EX systems.
(BZ#539692)

* links did not come up when using bnx2x with certain Broadcom devices. (BZ#540381)

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 kvm packages that fix one security issue and several bugs 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.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel.

On x86 platforms, the do_insn_fetch() function did not limit the amount of instruction bytes fetched per instruction. Users in guest operating systems could leverage this flaw to cause large latencies on SMP hosts that could lead to a local denial of service on the host operating system. This update fixes this issue by imposing the architecturally-defined 15 byte length limit for instructions.
(CVE-2009-4031)

This update also fixes the following bugs :

* performance problems occurred when using the qcow2 image format with the qemu-kvm -drive 'cache=none' option (the default setting when not specified otherwise). This could cause guest operating system installations to take hours. With this update, performance patches have been backported so that using the qcow2 image format with the 'cache=none' option no longer causes performance issues. (BZ#520693)

* when using the virtual vm8086 mode, bugs in the emulated hardware task switching implementation may have, in some situations, caused older guest operating systems to malfunction. (BZ#532031)

* Windows Server 2003 guests (32-bit) with more than 4GB of memory may have crashed during reboot when using the default qemu-kvm CPU settings. (BZ#532043)

* with Red Hat Enterprise Virtualization, guests continued to run after encountering disk read errors. This could have led to their file systems becoming corrupted (but not the host's), notably in environments that use networked storage. With this update, the qemu-kvm -drive 'werror=stop' option now applies not only to write errors but also to read errors: When using this option, guests will pause on disk read and write errors.

By default, guests managed by Red Hat Enterprise Virtualization use the 'werror=stop' option. This option is not used by default for guests managed by libvirt. (BZ#537334, BZ#540406)

* the para-virtualized block driver (virtio-blk) silently ignored read errors when accessing disk images. With this update, the driver correctly signals the read error to the guest. (BZ#537334)

All KVM users should upgrade to these updated packages, which contain backported patches to resolve these issues. Note: The procedure in the Solution section must be performed before this update will take effect.

An updated acpid package that fixes one security issue is 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.

acpid is a daemon that dispatches ACPI (Advanced Configuration and Power Interface) events to user-space programs.

It was discovered that acpid could create its log file ('/var/log/acpid') with random permissions on some systems. A local attacker could use this flaw to escalate their privileges if the log file was created as world-writable and with the setuid or setgid bit set. (CVE-2009-4033)

Please note that this flaw was due to a Red Hat-specific patch (acpid-1.0.4-fd.patch) included in the Red Hat Enterprise Linux 5 acpid package.

Users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

Updated bind packages that fix one security issue 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.

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.

Michael Sinatra discovered that BIND was incorrectly caching responses without performing proper DNSSEC validation, when those responses were received during the resolution of a recursive client query that requested DNSSEC records but indicated that checking should be disabled. A remote attacker could use this flaw to bypass the DNSSEC validation check and perform a cache poisoning attack if the target BIND server was receiving such client queries. (CVE-2009-4022)

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

An updated dstat package that fixes one security issue is 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.

Dstat is a versatile replacement for the vmstat, iostat, and netstat tools. Dstat can be used for performance tuning tests, benchmarks, and troubleshooting.

Robert Buchholz of the Gentoo Security Team reported a flaw in the Python module search path used in dstat. If a local attacker could trick a local user into running dstat from a directory containing a Python script that is named like an importable module, they could execute arbitrary code with the privileges of the user running dstat.
(CVE-2009-3894)

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

Updated xerces-j2 packages that fix a security issue 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.

The xerces-j2 packages provide the Apache Xerces2 Java Parser, a high-performance XML parser. A Document Type Definition (DTD) defines the legal syntax (and also which elements can be used) for certain types of files, such as XML files.

A flaw was found in the way the Apache Xerces2 Java Parser processed the SYSTEM identifier in DTDs. A remote attacker could provide a specially crafted XML file, which once parsed by an application using the Apache Xerces2 Java Parser, would lead to a denial of service (application hang due to excessive CPU use). (CVE-2009-2625)

Users should upgrade to these updated packages, which contain a backported patch to correct this issue. Applications using the Apache Xerces2 Java Parser must be restarted for this update to take effect.

Updated cups packages that fix two 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.

The Common UNIX Printing System (CUPS) provides a portable printing layer for UNIX operating systems. The CUPS 'pdftops' filter converts Portable Document Format (PDF) files to PostScript.

Two integer overflow flaws were found in the CUPS 'pdftops' filter. An attacker could create a malicious PDF file that would cause 'pdftops' to crash or, potentially, execute arbitrary code as the 'lp' user if the file was printed. (CVE-2009-3608, CVE-2009-3609)

Red Hat would like to thank Chris Rohlf for reporting the CVE-2009-3608 issue.

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

Updated kdegraphics packages that fix multiple 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 kdegraphics packages contain applications for the K Desktop Environment, including KPDF, a viewer for Portable Document Format (PDF) files.

Multiple integer overflow flaws were found in KPDF. An attacker could create a malicious PDF file that would cause KPDF to crash or, potentially, execute arbitrary code when opened. (CVE-2009-0791, CVE-2009-1188, CVE-2009-3604, CVE-2009-3608, CVE-2009-3609)

Red Hat would like to thank Adam Zabrocki for reporting the CVE-2009-3604 issue, and Chris Rohlf for reporting the CVE-2009-3608 issue.

Users are advised to upgrade to these updated packages, which contain a backported patch to resolve these issues.

Updated poppler packages that fix multiple security issues and a bug 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.

Poppler is a Portable Document Format (PDF) rendering library, used by applications such as Evince.

Multiple integer overflow flaws were found in poppler. An attacker could create a malicious PDF file that would cause applications that use poppler (such as Evince) to crash or, potentially, execute arbitrary code when opened. (CVE-2009-3603, CVE-2009-3608, CVE-2009-3609)

Red Hat would like to thank Chris Rohlf for reporting the CVE-2009-3608 issue.

This update also corrects a regression introduced in the previous poppler security update, RHSA-2009:0480, that prevented poppler from rendering certain PDF documents correctly. (BZ#528147)

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

An updated gpdf package that fixes multiple security issues is 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.

GPdf is a viewer for Portable Document Format (PDF) files.

Multiple integer overflow flaws were found in GPdf. An attacker could create a malicious PDF file that would cause GPdf to crash or, potentially, execute arbitrary code when opened. (CVE-2009-0791, CVE-2009-1188, CVE-2009-3604, CVE-2009-3608, CVE-2009-3609)

Red Hat would like to thank Adam Zabrocki for reporting the CVE-2009-3604 issue, and Chris Rohlf for reporting the CVE-2009-3608 issue.

Users are advised to upgrade to this updated package, which contains a backported patch to correct these issues.

Updated kdegraphics packages that fix multiple 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.

The kdegraphics packages contain applications for the K Desktop Environment, including KPDF, a viewer for Portable Document Format (PDF) files.

Multiple integer overflow flaws were found in KPDF. An attacker could create a malicious PDF file that would cause KPDF to crash or, potentially, execute arbitrary code when opened. (CVE-2009-0791, CVE-2009-1188, CVE-2009-3604, CVE-2009-3606, CVE-2009-3608, CVE-2009-3609)

Red Hat would like to thank Adam Zabrocki for reporting the CVE-2009-3604 issue, and Chris Rohlf for reporting the CVE-2009-3608 issue.

Users are advised to upgrade to these updated packages, which contain a backported patch to resolve these issues.

An updated xpdf package that fixes multiple security issues is 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.

Xpdf is an X Window System based viewer for Portable Document Format (PDF) files.

Multiple integer overflow flaws were found in Xpdf. An attacker could create a malicious PDF file that would cause Xpdf to crash or, potentially, execute arbitrary code when opened. (CVE-2009-0791, CVE-2009-1188, CVE-2009-3604, CVE-2009-3606, CVE-2009-3608, CVE-2009-3609)

Red Hat would like to thank Adam Zabrocki for reporting the CVE-2009-3604 issue, and Chris Rohlf for reporting the CVE-2009-3608 issue.

Users are advised to upgrade to this updated package, which contains a backported patch to correct these issues.

Updated postgresql packages that fix two security issues are now available for Red Hat Enterprise Linux 4 and 5.

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

PostgreSQL is an advanced object-relational database management system (DBMS).

It was discovered that the upstream patch for CVE-2007-6600 included in the Red Hat Security Advisory RHSA-2008:0038 did not include protection against misuse of the RESET ROLE and RESET SESSION AUTHORIZATION commands. An authenticated user could use this flaw to install malicious code that would later execute with superuser privileges. (CVE-2009-3230)

A flaw was found in the way PostgreSQL handled encoding conversion. A remote, authenticated user could trigger an encoding conversion failure, possibly leading to a temporary denial of service. Note: To exploit this issue, a locale and client encoding for which specific messages fail to translate must be selected (the availability of these is determined by an administrator-defined locale setting).
(CVE-2009-0922)

Note: For Red Hat Enterprise Linux 4, this update upgrades PostgreSQL to version 7.4.26. For Red Hat Enterprise Linux 5, this update upgrades PostgreSQL to version 8.1.18. Refer to the PostgreSQL Release Notes for a list of changes :

http://www.postgresql.org/docs/7.4/static/release.html http://www.postgresql.org/docs/8.1/static/release.html

All PostgreSQL users should upgrade to these updated packages, which resolve these issues. If the postgresql service is running, it will be automatically restarted after installing this update.

Updated xen packages that fix a security issue and multiple bugs 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.

Xen is an open source virtualization framework. Virtualization allows users to run guest operating systems in virtual machines on top of a host operating system.

The pyGrub boot loader did not honor the 'password' option in the grub.conf file for para-virtualized guests. Users with access to a guest's console could use this flaw to bypass intended access restrictions and boot the guest with arbitrary kernel boot options, allowing them to get root privileges in the guest's operating system.
With this update, pyGrub correctly honors the 'password' option in grub.conf for para-virtualized guests. (CVE-2009-3525)

This update also fixes the following bugs :

* rebooting para-virtualized guests sometimes caused those guests to crash due to a race condition in the xend node control daemon. This update fixes this race condition so that rebooting guests no longer potentially causes them to crash and fail to reboot. (BZ#525141)

* due to a race condition in the xend daemon, a guest could disappear from the list of running guests following a reboot, even though the guest rebooted successfully and was running. This update fixes this race condition so that guests always reappear in the guest list following a reboot. (BZ#525143)

* attempting to use PCI pass-through to para-virtualized guests on certain kernels failed with a 'Function not implemented' error message. As a result, users requiring PCI pass-through on para-virtualized guests were not able to update the xen packages without also updating the kernel and thus requiring a reboot. These updated packages enable PCI pass-through for para-virtualized guests so that users do not need to upgrade the kernel in order to take advantage of PCI pass-through functionality. (BZ#525149)

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

An updated elinks package that fixes two security issues is now available for Red Hat Enterprise Linux 4 and 5.

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

ELinks is a text-based Web browser. ELinks does not display any images, but it does support frames, tables, and most other HTML tags.

An off-by-one buffer overflow flaw was discovered in the way ELinks handled its internal cache of string representations for HTML special entities. A remote attacker could use this flaw to create a specially crafted HTML file that would cause ELinks to crash or, possibly, execute arbitrary code when rendered. (CVE-2008-7224)

It was discovered that ELinks tried to load translation files using relative paths. A local attacker able to trick a victim into running ELinks in a folder containing specially crafted translation files could use this flaw to confuse the victim via incorrect translations, or cause ELinks to crash and possibly execute arbitrary code via embedded formatting sequences in translated messages. (CVE-2007-2027)

All ELinks users are advised to upgrade to this updated package, which contains backported patches to resolve these issues.

Updated openssh packages that fix a security issue 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.

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

A Red Hat specific patch used in the openssh packages as shipped in Red Hat Enterprise Linux 5.4 (RHSA-2009:1287) loosened certain ownership requirements for directories used as arguments for the ChrootDirectory configuration options. A malicious user that also has or previously had non-chroot shell access to a system could possibly use this flaw to escalate their privileges and run commands as any system user. (CVE-2009-2904)

All OpenSSH users are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.

ID	Name	Severity
45091	CentOS 4 : kernel (CESA-2010:0146)	high
45090	CentOS 3 : cpio (CESA-2010:0145)	medium
45089	CentOS 4 : cpio (CESA-2010:0143)	medium
45088	CentOS 3 : tar (CESA-2010:0142)	medium
45068	CentOS 5 : cpio (CESA-2010:0144)	high
45067	CentOS 4 / 5 : tar (CESA-2010:0141)	high
45066	CentOS 3 / 4 / 5 : pango (CESA-2010:0140)	medium
45053	CentOS 5 : cups (CESA-2010:0129)	medium
44969	CentOS 5 : kvm (CESA-2010:0126)	high
44968	CentOS 5 : systemtap (CESA-2010:0124)	critical
44962	CentOS 4 : systemtap (CESA-2010:0125)	medium
44949	CentOS 5 : sudo (CESA-2010:0122)	medium
44948	CentOS 5 : mysql (CESA-2010:0109)	medium
44677	CentOS 5 : NetworkManager (CESA-2010:0108)	medium
44671	CentOS 4 / 5 : pidgin (CESA-2010:0115)	medium
44649	CentOS 3 / 4 : seamonkey (CESA-2010:0113)	critical
44648	CentOS 4 / 5 : firefox (CESA-2010:0112)	critical
44647	CentOS 4 : mysql (CESA-2010:0110)	high
44598	CentOS 3 / 4 / 5 : openoffice.org (CESA-2010:0101)	high
44428	CentOS 4 : HelixPlayer (CESA-2010:0094)	high
44427	CentOS 5 : kvm (CESA-2010:0088)	high
44395	CentOS 4 : kernel (CESA-2010:0076)	high
44340	CentOS Update Set	critical
44099	CentOS 5 : bind (CESA-2010:0062)	high
44098	CentOS 3 / 4 / 5 : gzip (CESA-2010:0061)	medium
44097	CentOS 5 : openssl (CESA-2010:0054)	medium
44096	CentOS 5 : kernel (CESA-2010:0046)	high
44028	CentOS 4 / 5 : pidgin (CESA-2010:0044)	medium
44027	CentOS 3 / 4 / 5 : gcc / gcc4 (CESA-2010:0039)	medium
44026	CentOS 4 : kernel (CESA-2010:0020)	critical
43878	CentOS 3 / 4 / 5 : php (CESA-2010:0040)	high
43866	CentOS 3 / 4 / 5 : krb5 (CESA-2010:0029)	critical
43832	CentOS 5 : kernel (CESA-2010:0019)	critical
43817	CentOS 5 : dbus (CESA-2010:0018)	low
43812	CentOS 5 : kernel (CESA-2009:1670)	high
43811	CentOS 5 : kvm (CESA-2009:1659)	high
43810	CentOS 5 : acpid (CESA-2009:1642)	medium
43809	CentOS 5 : bind (CESA-2009:1620)	low
43808	CentOS 5 : dstat (CESA-2009:1619)	medium
43807	CentOS 5 : xerces-j2 (CESA-2009:1615)	medium
43806	CentOS 5 : cups (CESA-2009:1513)	high
43805	CentOS 4 : kdegraphics (CESA-2009:1512)	high
43804	CentOS 5 : poppler (CESA-2009:1504)	high
43803	CentOS 4 : gpdf (CESA-2009:1503)	high
43802	CentOS 5 : kdegraphics (CESA-2009:1502)	high
43801	CentOS 4 : xpdf (CESA-2009:1501)	high
43800	CentOS 4 / 5 : postgresql (CESA-2009:1484)	medium
43799	CentOS 5 : xen (CESA-2009:1472)	high
43798	CentOS 4 / 5 : elinks (CESA-2009:1471)	high
43797	CentOS 5 : openssh (CESA-2009:1470)	medium

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