==========================================================================
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)

Summary:

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

Software Description:
- gnutls28: GNU TLS library

Details:

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.

References:
https://ubuntu.com/security/notices/USN-6499-2
https://ubuntu.com/security/notices/USN-6499-1
CVE-2023-5981

Ubuntu 6499-2: GnuTLS vulnerability

January 8, 2024
GnuTLS could be made to expose sensitive information over the network.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS (Available with Ubuntu Pro) Summary: GnuTLS could be made to expose sensitive information over the network. Software Description: - gnutls28: GNU TLS library Details: 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.

References

https://ubuntu.com/security/notices/USN-6499-2

https://ubuntu.com/security/notices/USN-6499-1

CVE-2023-5981

Severity
Ubuntu Security Notice USN-6499-2

Package Information

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