Bug 800064 (CVE-2012-1109)

Summary: CVE-2012-1109 mwlib: denial of service when parsing #iferror magic functions
Product: [Other] Security Response Reporter: Vincent Danen <vdanen>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: fedora-jasper, ian, linux.n.pkd, stickster
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2021-10-19 21:51:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 800066, 800067    
Bug Blocks:    

Description Vincent Danen 2012-03-05 17:02:42 UTC
It was reported [1],[2] that mwlib suffered from a flaw that could allow a remote attacker to perform a denial of service attack on a mwlib installation by forcing it to parse a specially-crafted #iferror magic function.  This has been corrected [3] in upstream version 0.13.5.

[1] http://groups.google.com/group/mwlib/browse_thread/thread/c2bd1cee77a8a79?hl=en
[2] http://www.google.com/url?sa=D&q=https://github.com/pediapress/mwlib/pull/10&usg=AFQjCNHgoXQUYFtEj0L8VP5K8Xn_GoTOyw
[3] https://github.com/pediapress/mwlib/commit/aa987c281c10e29f26aa0faa21c04f3bb1167fde

Comment 1 Vincent Danen 2012-03-05 17:03:54 UTC
Created python-mwlib tracking bugs for this issue

Affects: fedora-all [bug 800066]
Affects: epel-5 [bug 800067]

Comment 2 Vincent Danen 2012-03-05 17:07:39 UTC
CVE request: http://www.openwall.com/lists/oss-security/2012/03/05/16