USN-1627-1: Apache HTTP Server vulnerabilities

8 November 2012

apache2 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

Several security issues were fixed in the Apache HTTP server.

Software Description

  • apache2 - Apache HTTP server

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: http://httpd.apache.org/docs/2.4/mod/mod_ssl.html#sslcompression (CVE-2012-4929)

Update instructions

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

Ubuntu 12.10
apache2.2-common - 2.2.22-6ubuntu2.1
Ubuntu 12.04 LTS
apache2.2-common - 2.2.22-1ubuntu1.2
Ubuntu 11.10
apache2.2-common - 2.2.20-1ubuntu1.3
Ubuntu 10.04 LTS
apache2.2-common - 2.2.14-5ubuntu8.10
Ubuntu 8.04 LTS
apache2.2-common - 2.2.8-1ubuntu0.24

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References