[USN-6854-1] OpenSSL vulnerability

==========================================================================
Ubuntu Security Notice USN-6854-1
June 27, 2024

openssl vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS

Summary:

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

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

It was discovered that OpenSSL failed to choose an appropriately short
private key size when computing shared-secrets in the Diffie-Hellman Key
Agreement Protocol. A remote attacker could possibly use this issue to cause
OpenSSL to consume resources, resulting in a denial of service.

Update instructions:

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

Ubuntu 22.04 LTS
libssl3 3.0.2-0ubuntu1.16
openssl 3.0.2-0ubuntu1.16

After a standard system update you need to reboot your computer to make all the
necessary changes.

References:
https://ubuntu.com/security/notices/USN-6854-1
CVE-2022-40735

Package Information:
https://launchpad.net/ubuntu/+source/openssl/3.0.2-0ubuntu1.16


--
Alex Murray
Staff Engineer | Security Engineering
Adelaide, Australia (GMT+0930)