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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2 - 11 of 266 results

USN-6594-1: Squid vulnerabilities

23 January 2024

Several security issues were fixed in Squid.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-50269, CVE-2023-49286, CVE-2023-49285

USN-6593-1: GnuTLS vulnerabilities

22 January 2024

Several security issues were fixed in GnuTLS.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2024-0553, CVE-2024-0567

USN-6592-1: libssh vulnerabilities

22 January 2024

Several security issues were fixed in libssh.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2023-6918, CVE-2023-6004

USN-6588-1: PAM vulnerability

17 January 2024

PAM could be made to stop responding if it opened a specially crafted file.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2024-22365

USN-6559-1: ZooKeeper vulnerabilities

16 January 2024

Several security issues were fixed in ZooKeeper.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-44981, CVE-2019-0201

USN-6587-1: X.Org X Server vulnerabilities

16 January 2024

Several security issues were fixed in X.Org X Server.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2024-21886, CVE-2024-21885, CVE-2024-0408 + 3 others

USN-6586-1: FreeImage vulnerabilities

16 January 2024

Several security issues were fixed in FreeImage.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2020-21427, CVE-2020-21428, CVE-2019-12213 + 2 others

USN-6579-2: Xerces-C++ vulnerability

16 January 2024

Xerces-C++ could be made to crash or run programs if it opened a specially crafted file.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS

CVE ID

CVE-2018-1311

USN-6582-1: WebKitGTK vulnerability

15 January 2024

Several security issues were fixed in WebKitGTK.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS

CVE ID

CVE-2023-42883

USN-6580-1: w3m vulnerability

15 January 2024

w3m could be made to crash or run programs as your login if it opened a malicious website.

  • Ubuntu 23.10 ,
  • 23.04 ,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-4255

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