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-3723-1: Tomcat vulnerabilities

25 July 2018

Several security issues were fixed in Tomcat.

  • Ubuntu 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2018-1336, CVE-2018-8034

USN-3722-1: ClamAV vulnerabilities

24 July 2018

ClamAV could be made to hang if it opened a specially crafted file.

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

CVE ID

CVE-2018-0360, CVE-2018-0361

USN-3719-1: Mutt vulnerabilities

23 July 2018

Several security issues were fixed in Mutt.

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

CVE ID

CVE-2018-14349, CVE-2018-14350, CVE-2018-14351 + 9 others

USN-3718-2: Linux kernel (HWE) regression

21 July 2018

A regression that caused boot failures was fixed in the Linux kernel.

  • Ubuntu 16.04 LTS

USN-3717-1: PolicyKit vulnerabilities

16 July 2018

Several security issues were fixed in PolicyKit.

  • Ubuntu 18.04 LTS,
  • 17.10 ,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2015-3218, CVE-2015-3255, CVE-2015-4625 + 1 other

USN-3714-1: Thunderbird vulnerabilities

12 July 2018

Several security issues were fixed in Thunderbird.

  • Ubuntu 18.04 LTS,
  • 17.10 ,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2018-12359, CVE-2018-12360, CVE-2018-12362 + 8 others

USN-3716-1: Dnsmasq update

12 July 2018

The list of trust anchors has been updated.

  • Ubuntu 16.04 LTS

USN-3715-1: dns-root-data update

12 July 2018

The list of trust anchors has been updated.

  • Ubuntu 17.10 ,
  • 16.04 LTS

USN-3713-1: CUPS vulnerabilities

11 July 2018

Several security issues were fixed in CUPS.

  • Ubuntu 18.04 LTS,
  • 17.10 ,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2017-18248, CVE-2018-4180, CVE-2018-4181 + 1 other

USN-3712-1: libpng vulnerabilities

11 July 2018

Several security issues were fixed in libpng.

  • Ubuntu 18.04 LTS,
  • 17.10 ,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2016-10087, CVE-2018-13785

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