SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionHubert Kario discovered that GnuTLS incorrectly handled decoding a status response TLS extension. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service.
This issue only applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-7507)
It was discovered that GnuTLS incorrectly handled decoding certain OpenPGP certificates. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-7869).
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 libgnutls26 and / or libgnutls30 packages.