==========================================================================
Ubuntu Security Notice USN-6593-1
January 22, 2024

gnutls28 vulnerabilities
==========================================================================

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

- Ubuntu 23.10
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in GnuTLS.

Software Description:
- gnutls28: GNU TLS library

Details:

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)

Update instructions:

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

Ubuntu 23.10:
   libgnutls30                     3.8.1-4ubuntu1.2

Ubuntu 23.04:
   libgnutls30                     3.7.8-5ubuntu1.2

Ubuntu 22.04 LTS:
   libgnutls30                     3.7.3-4ubuntu1.4

Ubuntu 20.04 LTS:
   libgnutls30                     3.6.13-2ubuntu1.10

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

References:
   https://ubuntu.com/security/notices/USN-6593-1
   CVE-2024-0553, CVE-2024-0567

Package Information:
   https://launchpad.net/ubuntu/+source/gnutls28/3.8.1-4ubuntu1.2
   https://launchpad.net/ubuntu/+source/gnutls28/3.7.8-5ubuntu1.2
   https://launchpad.net/ubuntu/+source/gnutls28/3.7.3-4ubuntu1.4
   https://launchpad.net/ubuntu/+source/gnutls28/3.6.13-2ubuntu1.10

Ubuntu 6593-1: GnuTLS vulnerabilities

January 22, 2024
Several security issues were fixed in GnuTLS.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 - Ubuntu 23.04 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in GnuTLS. Software Description: - gnutls28: GNU TLS library Details: 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)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: libgnutls30 3.8.1-4ubuntu1.2 Ubuntu 23.04: libgnutls30 3.7.8-5ubuntu1.2 Ubuntu 22.04 LTS: libgnutls30 3.7.3-4ubuntu1.4 Ubuntu 20.04 LTS: libgnutls30 3.6.13-2ubuntu1.10 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6593-1

CVE-2024-0553, CVE-2024-0567

Severity
Ubuntu Security Notice USN-6593-1

Package Information

https://launchpad.net/ubuntu/+source/gnutls28/3.8.1-4ubuntu1.2 https://launchpad.net/ubuntu/+source/gnutls28/3.7.8-5ubuntu1.2 https://launchpad.net/ubuntu/+source/gnutls28/3.7.3-4ubuntu1.4 https://launchpad.net/ubuntu/+source/gnutls28/3.6.13-2ubuntu1.10

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