Ubuntu 14.04 LTS / 16.04 LTS / 17.10 / 18.04 LTS : openssl, openssl1.0 vulnerabilities (USN-3692-1)
Medium Nessus Plugin ID 110721
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionKeegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)
Guido Vranken discovered that OpenSSL incorrectly handled very large prime values during a key agreement. A remote attacker could possibly use this issue to consume resources, leading to a denial of service.
Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. (CVE-2018-0737).
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 libssl1.0.0 and / or libssl1.1 packages.