USN-723-1: Git vulnerabilities

18 February 2009

git-core vulnerabilities

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

  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 6.06 LTS

Software Description

  • git-core

Details

It was discovered that Git did not properly handle long file paths. If a user were tricked into performing commands on a specially crafted Git repository, an attacker could possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2008-3546)

It was discovered that the Git web interface (gitweb) did not correctly handle shell metacharacters when processing certain commands. A remote attacker could send specially crafted commands to the Git server and execute arbitrary code with the privileges of the Git web server. This issue only applied to Ubuntu 7.10 and 8.04 LTS. (CVE-2008-5516, CVE-2008-5517)

It was discovered that the Git web interface (gitweb) did not properly restrict the diff.external configuration parameter. A local attacker could exploit this issue and execute arbitrary code with the privileges of the Git web server. This issue only applied to Ubuntu 8.04 LTS and 8.10. (CVE-2008-5916)

Update instructions

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

Ubuntu 8.10
git-core - 1:1.5.6.3-1.1ubuntu2.1
gitweb - 1:1.5.6.3-1.1ubuntu2.1
Ubuntu 8.04 LTS
git-core - 1:1.5.4.3-1ubuntu2.1
gitweb - 1:1.5.4.3-1ubuntu2.1
Ubuntu 7.10
git-core - 1:1.5.2.5-2ubuntu0.1
gitweb - 1:1.5.2.5-2ubuntu0.1
Ubuntu 6.06 LTS
git-core - 1.1.3-1ubuntu1.1

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

In general, a standard system upgrade is sufficient to effect the necessary changes.

References