Memory leak in the zlib_stateful_init function in crypto/comp/c_zlib.c in libssl in OpenSSL 0.9.8f through 0.9.8h allows remote attackers to cause a denial of service (memory consumption) via multiple calls, as demonstrated by initial SSL client handshakes to the Apache HTTP Server mod_ssl that specify a compression algorithm.

From Red Hat Security Advisory 2009:1075 :

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

A flaw was found in the handling of compression structures between mod_ssl and OpenSSL. If too many connections were opened in a short period of time, all system memory and swap space would be consumed by httpd, negatively impacting other processes, or causing a system crash. (CVE-2008-1678)

Note: The CVE-2008-1678 issue did not affect Red Hat Enterprise Linux 5 prior to 5.3. The problem was introduced via the RHBA-2009:0181 errata in Red Hat Enterprise Linux 5.3, which upgraded OpenSSL to the newer 0.9.8e version.

A flaw was found in the handling of the 'Options' and 'AllowOverride' directives. In configurations using the 'AllowOverride' directive with certain 'Options=' arguments, local users were not restricted from executing commands from a Server-Side-Include script as intended.
(CVE-2009-1195)

All httpd users should upgrade to these updated packages, which contain backported patches to resolve these issues. Users must restart httpd for this update to take effect.

A flaw was found in the handling of compression structures between mod_ssl and OpenSSL. If too many connections were opened in a short period of time, all system memory and swap space would be consumed by httpd, negatively impacting other processes, or causing a system crash. (CVE-2008-1678)

A flaw was found in the handling of the 'Options' and 'AllowOverride' directives. In configurations using the 'AllowOverride' directive with certain 'Options=' arguments, local users were not restricted from executing commands from a Server-Side-Include script as intended.
(CVE-2009-1195)

Users must restart httpd for this update to take effect.

According to its banner, the remote web server uses a version of OpenSSL older than 0.9.8m.  Such versions have the following vulnerabilities :

  - Session renegotiations are not handled properly, which could     be exploited to insert arbitrary plaintext by a     man-in-the-middle. (CVE-2009-3555)

  - The library does not check for a NULL return value from calls     to the bn_wexpand() function, which has unspecified impact.
    (CVE-2009-3245)    
  - A memory leak in the zlib_stateful_finish function in crypto/comp/c_zlib.c     allows remote attackers to cause a denial of service via vectors that     trigger incorrect calls to the CRYPTO_cleanup_all_ex_data function.
    (CVE-2008-1678, CVE-2009-4355)         For this vulnerability to be exploitable, compression must be enabled in OpenSSL     for SSL/TLS connections.

New openssl packages are available for Slackware 11.0, 12.0, 12.1, 12.2, 13.0, and -current to fix security issues.

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

A flaw was found in the handling of compression structures between mod_ssl and OpenSSL. If too many connections were opened in a short period of time, all system memory and swap space would be consumed by httpd, negatively impacting other processes, or causing a system crash. (CVE-2008-1678)

Note: The CVE-2008-1678 issue did not affect Red Hat Enterprise Linux 5 prior to 5.3. The problem was introduced via the RHBA-2009:0181 errata in Red Hat Enterprise Linux 5.3, which upgraded OpenSSL to the newer 0.9.8e version.

A flaw was found in the handling of the 'Options' and 'AllowOverride' directives. In configurations using the 'AllowOverride' directive with certain 'Options=' arguments, local users were not restricted from executing commands from a Server-Side-Include script as intended.
(CVE-2009-1195)

All httpd users should upgrade to these updated packages, which contain backported patches to resolve these issues. Users must restart httpd for this update to take effect.

Multiple vulnerabilities has been found and corrected in apache :

Memory leak in the zlib_stateful_init function in crypto/comp/c_zlib.c in libssl in OpenSSL 0.9.8f through 0.9.8h allows remote attackers to cause a denial of service (memory consumption) via multiple calls, as demonstrated by initial SSL client handshakes to the Apache HTTP Server mod_ssl that specify a compression algorithm (CVE-2008-1678).
Note that this security issue does not really apply as zlib compression is not enabled in the openssl build provided by Mandriva, but apache is patched to address this issue anyway (conserns 2008.1 only).

mod_proxy_ajp.c in the mod_proxy_ajp module in the Apache HTTP Server 2.2.11 allows remote attackers to obtain sensitive response data, intended for a client that sent an earlier POST request with no request body, via an HTTP request (CVE-2009-1191).

Cross-site scripting (XSS) vulnerability in proxy_ftp.c in the mod_proxy_ftp module in Apache 2.0.63 and earlier, and mod_proxy_ftp.c in the mod_proxy_ftp module in Apache 2.2.9 and earlier 2.2 versions, allows remote attackers to inject arbitrary web script or HTML via wildcards in a pathname in an FTP URI (CVE-2008-2939). Note that this security issue was initially addressed with MDVSA-2008:195 but the patch fixing the issue was added but not applied in 2009.0.

The Apache HTTP Server 2.2.11 and earlier 2.2 versions does not properly handle Options=IncludesNOEXEC in the AllowOverride directive, which allows local users to gain privileges by configuring (1) Options Includes, (2) Options +Includes, or (3) Options +IncludesNOEXEC in a .htaccess file, and then inserting an exec element in a .shtml file (CVE-2009-1195).

The stream_reqbody_cl function in mod_proxy_http.c in the mod_proxy module in the Apache HTTP Server before 2.3.3, when a reverse proxy is configured, does not properly handle an amount of streamed data that exceeds the Content-Length value, which allows remote attackers to cause a denial of service (CPU consumption) via crafted requests (CVE-2009-1890).

Fix a potential Denial-of-Service attack against mod_deflate or other modules, by forcing the server to consume CPU time in compressing a large file after a client disconnects (CVE-2009-1891).

The ap_proxy_ftp_handler function in modules/proxy/proxy_ftp.c in the mod_proxy_ftp module in the Apache HTTP Server 2.0.63 and 2.2.13 allows remote FTP servers to cause a denial of service (NULL pointer dereference and child process crash) via a malformed reply to an EPSV command (CVE-2009-3094).

The mod_proxy_ftp module in the Apache HTTP Server allows remote attackers to bypass intended access restrictions and send arbitrary commands to an FTP server via vectors related to the embedding of these commands in the Authorization HTTP header, as demonstrated by a certain module in VulnDisco Pack Professional 8.11. NOTE: as of 20090903, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes (CVE-2009-3095).

Apache is affected by SSL injection or man-in-the-middle attacks due to a design flaw in the SSL and/or TLS protocols. A short term solution was released Sat Nov 07 2009 by the ASF team to mitigate these problems. Apache will now reject in-session renegotiation (CVE-2009-3555).

Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers

This update provides a solution to these vulnerabilities.

Missing sanity checks of FTP URLs allowed cross site scripting (XSS) attacks via the mod_proxy_ftp module (CVE-2008-2939).

Missing precautions allowed cross site request forgery (CSRF) via the mod_proxy_balancer interface (CVE-2007-6420).

A memory leak in the ssl module could crash apache (CVE-2008-1678)

Multiple vulnerabilities has been found and corrected in apache :

Memory leak in the zlib_stateful_init function in crypto/comp/c_zlib.c in libssl in OpenSSL 0.9.8f through 0.9.8h allows remote attackers to cause a denial of service (memory consumption) via multiple calls, as demonstrated by initial SSL client handshakes to the Apache HTTP Server mod_ssl that specify a compression algorithm (CVE-2008-1678).
Note that this security issue does not really apply as zlib compression is not enabled in the openssl build provided by Mandriva, but apache is patched to address this issue anyway (conserns 2008.1 only).

Cross-site scripting (XSS) vulnerability in proxy_ftp.c in the mod_proxy_ftp module in Apache 2.0.63 and earlier, and mod_proxy_ftp.c in the mod_proxy_ftp module in Apache 2.2.9 and earlier 2.2 versions, allows remote attackers to inject arbitrary web script or HTML via wildcards in a pathname in an FTP URI (CVE-2008-2939). Note that this security issue was initially addressed with MDVSA-2008:195 but the patch fixing the issue was added but not applied in 2009.0.

The Apache HTTP Server 2.2.11 and earlier 2.2 versions does not properly handle Options=IncludesNOEXEC in the AllowOverride directive, which allows local users to gain privileges by configuring (1) Options Includes, (2) Options +Includes, or (3) Options +IncludesNOEXEC in a .htaccess file, and then inserting an exec element in a .shtml file (CVE-2009-1195).

This update provides fixes for these vulnerabilities.

Update :

The patch for fixing CVE-2009-1195 for Mandriva Linux 2008.1 was incomplete, this update addresses the problem.

It was discovered that Apache did not sanitize the method specifier header from an HTTP request when it is returned in an error message, which could result in browsers becoming vulnerable to cross-site scripting attacks when processing the output. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data (such as passwords), within the same domain. This issue only affected Ubuntu 6.06 LTS and 7.10. (CVE-2007-6203)

It was discovered that Apache was vulnerable to a cross-site request forgery (CSRF) in the mod_proxy_balancer balancer manager. If an Apache administrator were tricked into clicking a link on a specially crafted web page, an attacker could trigger commands that could modify the balancer manager configuration. This issue only affected Ubuntu 7.10 and 8.04 LTS. (CVE-2007-6420)

It was discovered that Apache had a memory leak when using mod_ssl with compression. A remote attacker could exploit this to exhaust server memory, leading to a denial of service. This issue only affected Ubuntu 7.10. (CVE-2008-1678)

It was discovered that in certain conditions, Apache did not specify a default character set when returning certain error messages containing UTF-7 encoded data, which could result in browsers becoming vulnerable to cross-site scripting attacks when processing the output. This issue only affected Ubuntu 6.06 LTS and 7.10. (CVE-2008-2168)

It was discovered that when configured as a proxy server, Apache did not limit the number of forwarded interim responses. A malicious remote server could send a large number of interim responses and cause a denial of service via memory exhaustion. (CVE-2008-2364)

It was discovered that mod_proxy_ftp did not sanitize wildcard pathnames when they are returned in directory listings, which could result in browsers becoming vulnerable to cross-site scripting attacks when processing the output. (CVE-2008-2939).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is running a version of Mac OS X 10.5 or 10.4 that does not have the security update 2008-007 applied. 

This security update contains fixes for the following products :

  - Apache
  - Certificates
  - ClamAV
  - ColorSync
  - CUPS
  - Finder
  - launchd
  - libxslt
  - MySQL Server
  - Networking
  - PHP
  - Postfix
  - PSNormalizer
  - QuickLook
  - rlogin
  - Script Editor
  - Single Sign-On
  - Tomcat
  - vim
  - Weblog

This update includes the latest release of httpd 2.2. Two security issues are fixed in this update: A flaw was found in the handling of excessive interim responses from an origin server when using mod_proxy_http. In a forward proxy configuration, if a user of the proxy could be tricked into visiting a malicious web server, the proxy could be forced into consuming a large amount of stack or heap memory.
This could lead to an eventual process crash due to stack space exhaustion. A flaw was found in the handling of compression structures between mod_ssl and OpenSSL. A remote attacker enabling compression in an SSL handshake could cause a memory leak in the server, leading to a denial of service.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-200807-06 (Apache: Denial of Service)

    Multiple vulnerabilities have been discovered in Apache:
    Dustin Kirkland reported that the mod_ssl module can leak memory when     the client reports support for a compression algorithm (CVE-2008-1678).
    Ryujiro Shibuya reported that the ap_proxy_http_process_response()     function in the mod_proxy module does not limit the number of forwarded     interim responses (CVE-2008-2364).
    sp3x of SecurityReason reported a Cross-Site Request Forgery     vulnerability in the balancer-manager in the mod_proxy_balancer module     (CVE-2007-6420).
  Impact :

    A remote attacker could exploit these vulnerabilities by connecting to     an Apache httpd, by causing an Apache proxy server to connect to a     malicious server, or by enticing a balancer administrator to connect to     a specially crafted URL, resulting in a Denial of Service of the Apache     daemon.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
67866	Oracle Linux 5 : httpd (ELSA-2009-1075)	Nessus	Oracle Linux Local Security Checks	medium
60591	Scientific Linux Security Update : httpd on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
45039	OpenSSL < 0.9.8m Multiple Vulnerabilities	Nessus	Web Servers	critical
44946	Slackware 11.0 / 12.0 / 12.1 / 12.2 / 13.0 / current : openssl (SSA:2010-060-02)	Nessus	Slackware Local Security Checks	critical
43753	CentOS 5 : httpd (CESA-2009:1075)	Nessus	CentOS Local Security Checks	medium
43042	Mandriva Linux Security Advisory : apache (MDVSA-2009:323)	Nessus	Mandriva Local Security Checks	high
39910	openSUSE Security Update : apache2 (apache2-222)	Nessus	SuSE Local Security Checks	medium
39761	Mandriva Linux Security Advisory : apache (MDVSA-2009:124-1)	Nessus	Mandriva Local Security Checks	medium
38945	RHEL 5 : httpd (RHSA-2009:1075)	Nessus	Red Hat Local Security Checks	medium
36589	Ubuntu 6.06 LTS / 7.10 / 8.04 LTS : apache2 vulnerabilities (USN-731-1)	Nessus	Ubuntu Local Security Checks	medium
34699	openSUSE 10 Security Update : apache2 (apache2-5648)	Nessus	SuSE Local Security Checks	medium
34374	Mac OS X Multiple Vulnerabilities (Security Update 2008-007)	Nessus	MacOS X Local Security Checks	critical
33840	Fedora 9 : httpd-2.2.9-1.fc9 (2008-6393)	Nessus	Fedora Local Security Checks	medium
33473	GLSA-200807-06 : Apache: Denial of Service	Nessus	Gentoo Local Security Checks	medium

Detections

Analytics

CVE-2008-1678

high

Tenable Plugins

medium

medium

critical

critical

medium

high

medium

medium

medium

medium

medium

critical

medium

medium