Ubuntu Security Notices

Developers issue an Ubuntu Security Notice when a security issue is fixed in an official Ubuntu package. You can find additional guidance for high-profile vulnerabilities in the Ubuntu Vulnerability Knowledge Base section.

To report a security vulnerability in an Ubuntu package, please contact the Security Team.

The Security Team also produces OVAL files for each Ubuntu release. These are an industry-standard machine-readable format dataset that contain details of all known security vulnerabilities and fixes relevant to the Ubuntu release, and can be used to determine whether a particular patch is appropriate. OVAL files can also be used to audit a system to check whether the latest security fixes have been applied.

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5 December 2011

The system could be made to crash under certain conditions.

  • Ubuntu 11.10

CVE ID

CVE-2011-4081


28 November 2011

Update Manager could be made to overwrite files as the administrator.

  • Ubuntu 11.10 ,
  • 11.04 ,
  • 10.10 ,
  • 10.04 ,
  • 8.04

28 November 2011

Multiple vulnerabilities have been fixed in Thunderbird.

  • Ubuntu 11.10

23 November 2011

This update provides packages compatible with Firefox 8.

  • Ubuntu 11.10 ,
  • 11.04

23 November 2011

Multiple vulnerabilities have been fixed in Firefox.

  • Ubuntu 11.10 ,
  • 11.04

21 November 2011

Ark could be made to remove files.

  • Ubuntu 11.10 ,
  • 11.04 ,
  • 10.10 ,
  • 10.04

CVE ID

CVE-2011-2725


21 November 2011

The system could be made to expose sensitive information locally.

  • Ubuntu 11.10

21 November 2011

An attacker could trick Software Center into installing altered packages and repositories or exposing sensitive information over the network.

  • Ubuntu 11.10 ,
  • 11.04 ,
  • 10.10

CVE ID

CVE-2011-3150


18 November 2011

FreeType could be made to crash or run programs as your login if it opened a specially crafted font file.

  • Ubuntu 11.10 ,
  • 11.04 ,
  • 10.10 ,
  • 10.04 ,
  • 8.04

17 November 2011

An OpenLDAP server could potentially be made to crash if it received specially crafted network traffic from an authenticated user.

  • Ubuntu 11.10 ,
  • 11.04 ,
  • 10.10 ,
  • 10.04

CVE ID

CVE-2011-4079



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