Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : AppArmor update (USN-3784-1)
High Nessus Plugin ID 117934
SynopsisThe remote Ubuntu host is missing a security-related patch.
DescriptionAs a security improvement, this update adjusts the private-files abstraction to disallow writing to thumbnailer configuration files.
Additionally adjust the private-files, private-files-strict and user-files abstractions to disallow writes on parent directories of sensitive files.
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 apparmor package.