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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1 December 2020

Several security issues were fixed in Werkzeug.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

1 December 2020

PEAR could be made to run programs as an administrator.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

30 November 2020

containerd could be made to crash or run programs as an administrator.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

30 November 2020

SniffIt could be made to crash or run programs as root if it opened a specially crafted file.

  • Ubuntu 16.04 LTS

CVE ID

CVE-2014-5439


30 November 2020

Several security issues were fixed in QEMU.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

27 November 2020

igraph could be made to crash if it opened a specially crafted file.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

26 November 2020

USN-4646-1 introduced a regression in poppler.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

26 November 2020

xdg-utils could be made to expose sensitive information.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

25 November 2020

Several security issues were fixed in poppler.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS

25 November 2020

Mutt could be made to expose sensitive information.

  • Ubuntu 20.10 ,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 12.04


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