Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : gnutls26, gnutls28 vulnerabilities (USN-2540-1)
Medium Nessus Plugin ID 82024
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionIt was discovered that GnuTLS did not perform date and time checks on CA certificates, contrary to expectations. This issue only affected Ubuntu 10.04 LTS. (CVE-2014-8155)
Nikos Mavrogiannopoulos discovered that GnuTLS incorrectly verified that signature algorithms matched. A remote attacker could possibly use this issue to downgrade to a disallowed algorithm. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
It was discovered that GnuTLS incorrectly verified certificate algorithms. A remote attacker could possibly use this issue to downgrade to a disallowed algorithm. (CVE-2015-0294).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected libgnutls-deb0-28 and / or libgnutls26 packages.