rsync supplementary groups vulnerability. Ethan Benson reported that rsyncd fails to remove supplementary groups (such as root) from the server process after changing to the specified unprivileged uid and gid. "This seems only serious if rsync is called using "rsync --daemon" from the command line where it will inherit the group of the user starting the server (usually root)." (First LWN report: March 14th, 2002).
This week's updates: