Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : samba regression (USN-3242-2)
Low Nessus Plugin ID 99122
SynopsisThe remote Ubuntu host is missing a security-related patch.
DescriptionUSN-3242-1 fixed a vulnerability in Samba. The upstream fix introduced a regression when Samba is configured to disable following symbolic links.
This update fixes the problem.
Jann Horn discovered that Samba incorrectly handled symlinks. An authenticated remote attacker could use this issue to access files on the server outside of the exported directories.
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 samba package.