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.
Search USNs
USN ID, name, description or CVE ID contains
1541 - 1550 of 2922 results
5 January 2021
OpenStack Horizon could be made to redirect to a malicious URL.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
4 January 2021
Several security issues were fixed in Dovecot.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
4 January 2021
USN-4668-1 introduced a regression in python-apt.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
4 January 2021
libproxy could be made to crash or execute arbitrary code if it received a specially crafted file.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
16 December 2020
Several security issues were fixed in unzip.
- Ubuntu 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS,
- 12.04
CVE ID
CVE-2018-1000035, CVE-2018-18384, CVE-2014-9913 + 2 others
15 December 2020
Firefox could be made to crash or run programs as your login if it opened a malicious website.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
CVE-2020-26971, CVE-2020-26973, CVE-2020-26978 + 8 others
15 December 2020
Several security issues were fixed in ImageMagick.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
13 December 2020
USN-4660-1 introduced a regression in the Linux kernel.
- Ubuntu 18.04 LTS,
- 16.04 LTS
11 December 2020
lxml could allow cross-site scripting (XSS) attacks.
- Ubuntu 20.10 ,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS,
- 12.04
CVE ID
10 December 2020
SquirrelMail could be made to crash if it received specially crafted input.
- Ubuntu 16.04 LTS
CVE ID
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