USN-5901-1: GnuTLS vulnerability

Publication date

28 February 2023

Overview

GnuTLS could be made to expose sensitive information over the network.


Packages

Details

Hubert Kario discovered that GnuTLS had a timing side-channel when handling
certain RSA messages. A remote attacker could possibly use this issue to
recover sensitive information.

Hubert Kario discovered that GnuTLS had a timing side-channel when handling
certain RSA messages. A remote attacker could possibly use this issue to
recover sensitive information.

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
22.10 kinetic libgnutls30 –  3.7.7-2ubuntu2.1
22.04 jammy libgnutls30 –  3.7.3-4ubuntu1.2
20.04 focal libgnutls30 –  3.6.13-2ubuntu1.8

Reduce your security exposure

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