Ubuntu 12.04 LTS / 14.04 LTS / 14.10 : ntp vulnerabilities (USN-2567-1)
Medium Nessus Plugin ID 82765
SynopsisThe remote Ubuntu host is missing a security-related patch.
DescriptionMiroslav Lichvar discovered that NTP incorrectly validated MAC fields.
A remote attacker could possibly use this issue to bypass authentication and spoof packets. (CVE-2015-1798)
Miroslav Lichvar discovered that NTP incorrectly handled certain invalid packets. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2015-1799)
Juergen Perlinger discovered that NTP incorrectly generated MD5 keys on big-endian platforms. This issue could either cause ntp-keygen to hang, or could result in non-random keys. (CVE number pending).
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 ntp package.