Cross-site scripting in MediaWiki - CVE-2012-4378
Published: October 26, 2017 / Updated: April 10, 2021
Vulnerability identifier: #VU38013
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2012-4378
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
Vulnerability allows a remote attacker to perform Cross-site scripting attacks.
An input validation error exists in MediaWiki before 1.18.5 and 1.19.x before 1.19.2, when unspecified JavaScript gadgets are used, when processing the userlang parameter to w/index.php. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
How to mitigate CVE-2012-4378
Install update from vendor's website.
Sources
- http://www.openwall.com/lists/oss-security/2012/08/31/10
- http://www.openwall.com/lists/oss-security/2012/08/31/6
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330
- https://bugzilla.redhat.com/show_bug.cgi?id=853417
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html
- https://phabricator.wikimedia.org/T39587