USN-4243-1: libbsd vulnerabilities

Releases

• Ubuntu 19.04
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• libbsd - utility functions from BSD systems - development files

Details

It was discovered that libbsd incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
This issue only affected Ubuntu 14.04 ESM. (CVE-2016-2090)

It was discovered that libbsd incorrectly handled certain strings.
An attacker could possibly use this issue to access sensitive information.
(CVE-2019-20367)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04

• libbsd0 - 0.9.1-2ubuntu0.1

Ubuntu 18.04

• libbsd0 - 0.8.7-1ubuntu0.1

Ubuntu 16.04

• libbsd0 - 0.8.2-1ubuntu0.1

Ubuntu 14.04

• libbsd0 - 0.6.0-2ubuntu1+esm1
  Available with Ubuntu Pro

Ubuntu 12.04

• libbsd0 - 0.3.0-2ubuntu0.1

In general, a standard system update will make all the necessary changes.

References

• CVE-2016-2090
• CVE-2019-20367