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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13 July 2023

Several security issues were fixed in SpiderMonkey.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS

13 July 2023

Several security issues were fixed in SciPy.

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

13 July 2023

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

  • Ubuntu 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

12 July 2023

Several security issues were fixed in Ruby.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

11 July 2023

The maximum failed attempts security feature for .NET could be bypassed.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS

11 July 2023

Several security issues were fixed in Thunderbird.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

10 July 2023

Ghostscript could be made to run programs if it opened a specially crafted file.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

7 July 2023

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

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

5 July 2023

CPDB could be made to crash or execute arbitrary code.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

5 July 2023

Django could be made to consume resources if it received specially crafted network traffic.

  • Ubuntu 23.04 ,
  • 22.10 ,
  • 22.04 LTS,
  • 20.04 LTS

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