Advisory Published

USN-6593-1: GnuTLS vulnerabilities

First published: Mon Jan 22 2024(Updated: )

It was discovered that GnuTLS had a timing side-channel when processing malformed ciphertexts in RSA-PSK ClientKeyExchange. A remote attacker could possibly use this issue to recover sensitive information. (CVE-2024-0553) It was discovered that GnuTLS incorrectly handled certain certificate chains with a cross-signing loop. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 23.04, and Ubuntu 23.10. (CVE-2024-0567)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libgnutls30<3.8.1-4ubuntu1.2
3.8.1-4ubuntu1.2
Ubuntu Ubuntu=23.10
All of
ubuntu/libgnutls30<3.7.8-5ubuntu1.2
3.7.8-5ubuntu1.2
Ubuntu Ubuntu=23.04
All of
ubuntu/libgnutls30<3.7.3-4ubuntu1.4
3.7.3-4ubuntu1.4
Ubuntu Ubuntu=22.04
All of
ubuntu/libgnutls30<3.6.13-2ubuntu1.10
3.6.13-2ubuntu1.10
Ubuntu Ubuntu=20.04

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