A security flaw was found in the way MoinMoin, a wikiengine to collaborate on easily editable web pages, performed enforcement of access control list (ACL) rules for certain virtual groups. Previously if the group contained special members like "All", "Known" or "Trusted" due to a bug virtual groups handling, the ACL evaluation code was checking if they are present in the NAME group (and not as intended in the MEMBERS group). This problem caused that trusted users were not properly included into groups, they should be and vice versa (untrusted users weren not excluded from group membership as they should have been). Upstream patch: [1] http://hg.moinmo.in/moin/1.9/rev/7b9f39289e16 References: [2] http://www.openwall.com/lists/oss-security/2012/09/04/4 [3] http://www.openwall.com/lists/oss-security/2012/09/05/2
This issue affects the version of the moin package, as shipped with Fedora release of 16 and 17. Please schedule an update.
Created moin tracking bugs for this issue Affects: fedora-all [bug 854733]
It actually looks that despite of the fact MoinMoin upstream to claim that versions of moin prior to 1.9 not being affected by this issue: http://hg.moinmo.in/moin/1.9/rev/7b9f39289e16 that this problem affects also the version of the moin package, as shipped with Fedora EPEL 5 (moin-1.5.9-1.el5). Justification: The ACL rules / code implementation, that now resides in 'security/__init__.py' was before located in 'moin-1.5.9/MoinMoin/wikiacl.py'. From the 1.9.4 ChangeLog file: docs/CHANGES:1879: * Moved wikiacl.py to security/__init__.py. and the relevant routine in 'wikiacl.py', present in moin-1.5.9 version truly reminds the affected code from 1.9.4 version. Matthias, could you please check the provided testcase (test_security.py) from upstream patch [1] if it would work (probably after back port) against Fedora EPEL 5 moin 1.5.9 based version too? Thank you, Jan. -- Jan iankko Lieskovsky / Red Hat Security Response Team
Created moin tracking bugs for this issue Affects: epel-5 [bug 854739]
Updates built and submitted for the Fedora versions. The EPEL 5 version is unmaintained, I won't be submitting updates for it.
moin-1.9.4-3.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.
moin-1.9.4-3.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
moin-1.9.4-3.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.