Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : libssh regression (USN-3795-3)
High Nessus Plugin ID 119300
SynopsisThe remote Ubuntu host is missing a security-related patch.
DescriptionUSN-3795-1 and USN-3795-2 fixed a vulnerability in libssh. The upstream fix introduced a regression. This update fixes the problem.
Original advisory details :
Peter Winter-Smith discovered that libssh incorrectly handled authentication when being used as a server. A remote attacker could use this issue to bypass authentication without any credentials.
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 libssh-4 package.