Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 22.04
Description
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: Run `sudo pro fix USN-6593-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libgnutls30 – 3.6.13-2ubuntu1.10 libgnutls28-dev – 3.6.13-2ubuntu1.10 libgnutlsxx28 – 3.6.13-2ubuntu1.10 gnutls-doc – 3.6.13-2ubuntu1.10 libgnutls-dane0 – 3.6.13-2ubuntu1.10 gnutls-bin – 3.6.13-2ubuntu1.10 guile-gnutls – 3.6.13-2ubuntu1.10 libgnutls-openssl27 – 3.6.13-2ubuntu1.10 No subscription required
CVEs contained in this USN include: CVE-2024-0553, CVE-2024-0567.
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- cflinuxfs4
- All versions prior to 1.67.0
- Jammy Stemcells
- 1.x versions prior to 1.351
- All other stemcells not listed.
- CF Deployment
- All versions with Jammy Stemcells prior to 1.351
Mitigation
Users of affected products are strongly encouraged to follow the mitigations below.
The Cloud Foundry project recommends upgrading the following releases:
- cflinuxfs4
- Upgrade all versions to 1.67.0 or greater
- Jammy Stemcells
- Upgrade 1.x versions to 1.351 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
- CF Deployment
- For all versions, upgrade Jammy Stemcells to 1.351 or greater
References
History
2024-02-29: Initial vulnerability report published.
