Vulnerability CVE-2011-4361
Published: 2012-01-08   Modified: 2012-02-13

Description:
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Mediawiki -> Mediawiki 
Mediawiki -> Mediawiki botquery ext 

 References:
https://bugzilla.wikimedia.org/show_bug.cgi?id=32616
http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-November/000104.html
https://bugzilla.redhat.com/show_bug.cgi?id=758171
http://www.debian.org/security/2011/dsa-2366
http://openwall.com/lists/oss-security/2011/11/29/6
http://openwall.com/lists/oss-security/2011/11/29/12
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