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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12 February 2013

Several security issues were fixed in the kernel.

  • Ubuntu 11.10

12 February 2013

PostgreSQL could be made to crash if it received specially crafted input.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10 ,
  • 10.04 ,
  • 8.04

CVE ID

CVE-2013-0255


5 February 2013

USN-1681-1 introduced a regression in Firefox.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10 ,
  • 10.04

5 February 2013

Guests using the QXL graphics driver could be caused to hang or crash.

  • Ubuntu 12.04 ,
  • 11.10

CVE ID

CVE-2013-0241


31 January 2013

squid-cgi could consume excessive system resources, leading to a denial of service attack on it and other hosted services.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10 ,
  • 10.04

30 January 2013

Several security issues were fixed in Inkscape.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10 ,
  • 10.04

29 January 2013

Glance could be made to expose sensitive information over the network.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10

CVE ID

CVE-2013-0212


29 January 2013

Nova volume could be made to expose volumes from other users.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10

CVE ID

CVE-2013-0208


28 January 2013

libssh could be made to crash if it received specially crafted network traffic.

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10 ,
  • 10.04

CVE ID

CVE-2013-0176


28 January 2013

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

  • Ubuntu 12.10 ,
  • 12.04 ,
  • 11.10


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Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.