Improper Authentication in MediaWiki - CVE-2011-1766
Published: May 24, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45032
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1766
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
includes/User.php in MediaWiki before 1.16.5, when wgBlockDisablesLogin is enabled, does not clear certain cached data after verification of an auth token fails, which allows remote attackers to bypass authentication by creating crafted wikiUserID and wikiUserName cookies, or by leveraging an unattended workstation.
Affected software
MediaWiki
How to mitigate CVE-2011-1766
Install update from vendor's website.
External References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060435.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060496.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060507.html
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-May/000098.html
- http://secunia.com/advisories/44684
- http://www.securityfocus.com/bid/47722
- https://bugzilla.redhat.com/show_bug.cgi?id=702512
- https://bugzilla.wikimedia.org/show_bug.cgi?id=28639