USN-1627-1: Apache HTTP Server vulnerabilities

Publication date

8 November 2012

Overview

Several security issues were fixed in the Apache HTTP server.


Packages

Details

It was discovered that the mod_negotiation module incorrectly handled
certain filenames, 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. (CVE-2012-2687)

It was discovered that the Apache HTTP Server was vulnerable to the "CRIME"
SSL data compression attack. Although this issue had been mitigated on the
client with newer web browsers, this update also disables SSL data
compression on the server. A new SSLCompression directive for Apache has
been backported that may be used to re-enable SSL data compression in
certain environments. For more information, please refer to:

It was discovered that the mod_negotiation module incorrectly handled
certain filenames, 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. (CVE-2012-2687)

It was discovered that the Apache HTTP Server was vulnerable to the "CRIME"
SSL data compression attack. Although this issue had been mitigated on the
client with newer web browsers, this update also disables SSL data
compression on the server. A new SSLCompression directive for Apache has
been backported that may be used to re-enable SSL data compression in
certain environments. For more information, please refer to:
http://httpd.apache.org/docs/2.4/mod/mod_ssl.html#sslcompression
(CVE-2012-4929)


Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
8.04 hardy apache2.2-common –  2.2.8-1ubuntu0.24
12.10 quantal apache2.2-common –  2.2.22-6ubuntu2.1
12.04 precise apache2.2-common –  2.2.22-1ubuntu1.2
11.10 oneiric apache2.2-common –  2.2.20-1ubuntu1.3
10.04 lucid apache2.2-common –  2.2.14-5ubuntu8.10

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