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 August 2023

Several security issues were fixed in ZZIPlib.

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

17 August 2023

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

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

16 August 2023

GStreamer could be made to denial of service if it received a specially crafted datetime string.

  • Ubuntu 16.04 LTS

CVE ID

CVE-2017-5838


15 August 2023

Several security issues were fixed in LibTIFF.

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

14 August 2023

Several security issues were patched in the Go yaml package.

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

14 August 2023

Several security issues were fixed in Intel Microcode.

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

10 August 2023

Velocity Tools could be made to run arbitrary code if it opened a specially crafted file.

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

10 August 2023

Velocity Engine could be made to run arbitrary code if it opened a specially crafted file.

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

10 August 2023

PyPDF2 could be made to crash if it opened a specially crafted file.

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

9 August 2023

A hardening measure was added to OpenSSH.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS


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