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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.1126
                          apache2 security update
                              3 December 2012

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           apache2
Publisher:         Debian
Operating System:  Debian GNU/Linux 6
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Denial of Service              -- Remote/Unauthenticated      
                   Provide Misleading Information -- Remote with User Interaction
                   Unauthorised Access            -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-4929 CVE-2012-4557 

Reference:         ESB-2012.1085

Original Bulletin: 
   http://www.debian.org/security/2012/dsa-2579

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running apache2 check for an updated version of the software for 
         their operating system.

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Debian Security Advisory DSA-2579-1                   security@debian.org
http://www.debian.org/security/                            Stefan Fritsch
November 30, 2012                      http://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : apache2
Vulnerability  : Multiple issues
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2012-4557 CVE-2012-4929
Debian Bug     : 689936

A vulnerability has been found in the Apache HTTPD Server:

CVE-2012-4557

	A flaw was found when mod_proxy_ajp connects to a backend
	server that takes too long to respond. Given a specific
	configuration, a remote attacker could send certain requests,
	putting a backend server into an error state until the retry
	timeout expired. This could lead to a temporary denial of
	service.

In addition, this update also adds a server side mitigation for the
following issue:

CVE-2012-4929

	If using SSL/TLS data compression with HTTPS in an connection
	to a web browser, man-in-the-middle attackers may obtain
	plaintext HTTP headers. This issue is known as the "CRIME"
	attack. This update of apache2 disables SSL compression by
	default. A new SSLCompression directive has been backported
	that may be used to re-enable SSL data compression in
	environments where the "CRIME" attack is not an issue.
	For more information, please refer to:
	http://httpd.apache.org/docs/2.4/mod/mod_ssl.html#sslcompression

For the stable distribution (squeeze), these problems have been fixed in
version 2.2.16-6+squeeze10.

For the testing distribution (wheezy), these problems have been fixed in
version 2.2.22-12.

For the unstable distribution (sid), these problems have been fixed in
version 2.2.22-12.

We recommend that you upgrade your apache2 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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