1. Ubuntu Security Notices
  2. USN-5328-1

USN-5328-1: OpenSSL vulnerability

Publication date

15 March 2022

Overview

OpenSSL could be made to stop responding if it opened a specially crafted certificate.

Releases

Packages

  • openssl - Secure Socket Layer (SSL) cryptographic library and tools
  • openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools

Details

Tavis Ormandy discovered that OpenSSL incorrectly parsed certain
certificates. A remote attacker could possibly use this issue to cause
OpenSSH to stop responding, resulting in a denial of service.

Tavis Ormandy discovered that OpenSSL incorrectly parsed certain
certificates. A remote attacker could possibly use this issue to cause
OpenSSH to stop responding, resulting in a denial of service.

Update instructions

After a standard system update you need to reboot your computer to 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
21.10 impish libssl1.1 –  1.1.1l-1ubuntu1.2
20.04 focal libssl1.1 –  1.1.1f-1ubuntu2.12
18.04 bionic libssl1.0.0 –  1.0.2n-1ubuntu5.8
libssl1.1 –  1.1.1-1ubuntu2.1~18.04.15

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 ›