USN-6188-1: OpenSSL vulnerability

Publication date

22 June 2023

Overview

OpenSSL could be made to consume resources and cause long delays if it processed certain input.


Packages

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

Details

Matt Caswell discovered that OpenSSL incorrectly handled certain ASN.1
object identifiers. A remote attacker could possibly use this issue to
cause OpenSSL to consume resources, resulting in a denial of service.

Matt Caswell discovered that OpenSSL incorrectly handled certain ASN.1
object identifiers. A remote attacker could possibly use this issue to
cause OpenSSL to consume resources, 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
16.04 xenial openssl –  1.0.2g-1ubuntu4.20+esm9  
libssl1.0.0 –  1.0.2g-1ubuntu4.20+esm9  
14.04 trusty openssl –  1.0.1f-1ubuntu2.27+esm9  
libssl1.0.0 –  1.0.1f-1ubuntu2.27+esm9  

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.


Have additional questions?

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