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MoinMoin: Group ACL bypass


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200407-09 / MoinMoin
Release Date July 11, 2004
Latest Revision May 22, 2006: 02
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apps/moinmoin <= 1.2.1 >= 1.2.2 All supported architectures

Related bugreports: #53126


MoinMoin contains a bug allowing a user to bypass group ACLs (Access Control Lists).

2.  Impact Information


MoinMoin is a Python clone of WikiWiki, based on PikiPiki.


MoinMoin contains a bug in the code handling administrative group ACLs. A user created with the same name as an administrative group gains the privileges of the administrative group.


If an administrative group called AdminGroup existed an attacker could create a user called AdminGroup and gain the privileges of the group AdminGroup. This could lead to unauthorized users gaining administrative access.

3.  Resolution Information


For every administrative group with special privileges create a user with the same name as the group.


All users should upgrade to the latest available version of MoinMoin, as follows:

Code Listing 3.1: Resolution

# emerge sync

# emerge -pv ">=www-apps/moinmoin-1.2.2"
# emerge ">=www-apps/moinmoin-1.2.2"

4.  References


Page updated July 11, 2004

Summary: This is a Gentoo Linux Security Advisory

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