[USN-6499-2] GnuTLS vulnerability

Camila Camargo de Matos camila.camargodematos at canonical.com
Mon Jan 8 11:56:53 UTC 2024

Ubuntu Security Notice USN-6499-2
January 08, 2024

gnutls28 vulnerability

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

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)


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

Software Description:
- gnutls28: GNU TLS library


USN-6499-1 fixed vulnerabilities in GnuTLS. This update provides the
corresponding update for Ubuntu 18.04 LTS.

Original advisory 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.

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libgnutls30 3.5.18-1ubuntu1.6+esm1

In general, a standard system update will make all the necessary changes.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature.asc
Type: application/pgp-signature
Size: 495 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20240108/39f84576/attachment.sig>

More information about the ubuntu-security-announce mailing list