1. Ubuntu Security Notices
  2. USN-5688-1

USN-5688-1: Libksba vulnerability

Publication date

19 October 2022

Overview

Libksba could be made to crash or run programs if it decoded specially crafted data.

Releases

Packages

  • libksba - X.509 and CMS support library

Details

It was discovered that an integer overflow could be triggered in Libksba
when decoding certain data. An attacker could use this issue to cause a
denial of service (application crash) or possibly execute arbitrary code.

It was discovered that an integer overflow could be triggered in Libksba
when decoding certain data. An attacker could use this issue to cause a
denial of service (application crash) or possibly execute arbitrary code.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.04 jammy libksba8 –  1.6.0-2ubuntu0.1
20.04 focal libksba8 –  1.3.5-2ubuntu0.20.04.1
18.04 bionic libksba8 –  1.3.5-2ubuntu0.18.04.1
16.04 xenial libksba8 –  1.3.3-1ubuntu0.16.04.1+esm1  
14.04 trusty libksba8 –  1.3.0-3ubuntu0.14.04.2+esm1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›