Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2012.1126
apache2 security update
3 December 2012
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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
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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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