FreeBSD : sudo -- Flaw in Runas group matching (67b514c3-ba8f-11df-8f6e-000c29a67389)
Medium Nessus Plugin ID 49123
SynopsisThe remote FreeBSD host is missing a security-related update.
DescriptionTodd Miller reports :
Beginning with sudo version 1.7.0 it has been possible to grant permission to run a command using a specified group via sudo -g option (run as group). A flaw exists in the logic that matches Runas groups in the sudoers file when the -u option is also specified (run as user). This flaw results in a positive match for the user specified via -u so long as the group specified via -g is allowed by the sudoers file.
Exploitation of the flaw requires that Sudo be configured with sudoers entries that contain a Runas group. Entries that do not contain a Runas group, or only contain a Runas user are not affected.
SolutionUpdate the affected package.