Input validation error in MediaWiki - CVE-2012-4885
Published: September 10, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43599
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-4885
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The wikitext parser in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allows remote attackers to cause a denial of service (infinite loop) via certain input, as demonstrated by the padleft function.
Affected software
MediaWiki
How to mitigate CVE-2012-4885
Install update from vendor's website.
External References
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
- http://secunia.com/advisories/48504
- http://www.openwall.com/lists/oss-security/2012/03/22/9
- http://www.openwall.com/lists/oss-security/2012/03/24/1
- http://www.securityfocus.com/bid/52689
- https://bugzilla.wikimedia.org/show_bug.cgi?id=22555
- https://bugzilla.wikimedia.org/show_bug.cgi?id=35315