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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USN-4455-1: NSS vulnerabilities

10 August 2020

Several security issues were fixed in NSS.

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

CVE ID

CVE-2020-12400, CVE-2020-12401, CVE-2020-6829

USN-4451-2: ppp vulnerability

6 August 2020

ppp could be made to load arbitrary kernel modules and possibly run programs.

  • Ubuntu 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-15704

USN-4435-2: ClamAV vulnerabilities

27 July 2020

Several security issues were fixed in ClamAV.

  • Ubuntu 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-3327, CVE-2020-3350, CVE-2020-3481

USN-4428-1: Python vulnerabilities

22 July 2020

Several security issues were fixed in Python.

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

CVE ID

CVE-2019-20907, CVE-2019-9674, CVE-2019-17514 + 1 other

USN-4376-2: OpenSSL vulnerabilities

9 July 2020

Several security issues were fixed in OpenSSL.

  • Ubuntu 14.04 LTS,
  • 12.04

CVE ID

CVE-2019-1547, CVE-2019-1559, CVE-2019-1563

USN-4417-2: NSS vulnerability

6 July 2020

NSS could be made to expose sensitive information.

  • Ubuntu 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-12402

USN-4409-1: Samba vulnerabilities

2 July 2020

Several security issues were fixed in Samba.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-10730, CVE-2020-10745, CVE-2020-10760

USN-4403-1: Mutt vulnerability and regression

24 June 2020

Mutt could be made to enable MITM attacks if it received a specially crafted request.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS,
  • 12.04

CVE ID

CVE-2020-14954

USN-4402-1: curl vulnerabilities

24 June 2020

Several security issues were fixed in curl.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS,
  • 12.04

CVE ID

CVE-2020-8177, CVE-2020-8169

USN-4401-1: Mutt vulnerabilities

22 June 2020

Several security issues were fixed in Mutt.

  • Ubuntu 20.04 LTS,
  • 19.10 ,
  • 18.04 LTS,
  • 16.04 LTS,
  • 12.04

CVE ID

CVE-2020-14093, CVE-2020-14154

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