security/init.py in MoinMoin 1.9 through 1.9.4 does not properly handle group names that contain virtual group names such as “All,” “Known,” or “Trusted,” which allows remote authenticated users with virtual group membership to be treated as a member of the group.
hg.moinmo.in/moin/1.9/rev/7b9f39289e16
moinmo.in/SecurityFixes
secunia.com/advisories/50474
secunia.com/advisories/50496
secunia.com/advisories/50885
www.debian.org/security/2012/dsa-2538
www.openwall.com/lists/oss-security/2012/09/04/4
www.openwall.com/lists/oss-security/2012/09/05/2
www.ubuntu.com/usn/USN-1604-1