USN-6499-1: GnuTLS vulnerability

Publication date

21 November 2023

Overview

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


Packages

Details

It was discovered that GnuTLS had a timing side-channel when handling
certain RSA-PSK key exchanges. A remote attacker could possibly use this
issue to recover sensitive information.

It was discovered that GnuTLS had a timing side-channel when handling
certain RSA-PSK key exchanges. 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
23.10 mantic libgnutls30 –  3.8.1-4ubuntu1.1
23.04 lunar libgnutls30 –  3.7.8-5ubuntu1.1
22.04 jammy libgnutls30 –  3.7.3-4ubuntu1.3
20.04 focal libgnutls30 –  3.6.13-2ubuntu1.9

Reduce your security exposure

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