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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17 September 2018

USN-3761-1 caused several regressions in Firefox.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

17 September 2018

curl could be made to run arbitrary code if it received a specially crafted input.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

13 September 2018

USN-3761-1 caused several regressions in Firefox.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

11 September 2018

Zsh could be made to execute arbitrary code if it received a specially crafted script.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

6 September 2018

Firefox could be made to crash or run programs as your login if it opened a malicious website.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

6 September 2018

transfig could be made to execute arbitrary code if it received a specially crafted FIG file.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

5 September 2018

Several security issues were fixed in libtirpc.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

30 August 2018

Several security issues were fixed in libx11.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

29 August 2018

poppler could be made to crash if it received specially crafted PDF file.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

27 August 2018

The system could be made to expose sensitive information.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS


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