Improper Authentication in MediaWiki - CVE-2011-1766
Published: May 24, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45032
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2011-1766
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
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.
How to mitigate CVE-2011-1766
Install update from vendor's website.
Sources
- 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