#VU41980 Cross-site scripting in MediaWiki - CVE-2014-2242

Vulnerability identifier: #VU41980

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-2242

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. The vulnerability allows remote attackers to conduct cross-site scripting (XSS) attacks via an SVG upload, as demonstrated by use of a W3C XHTML namespace in conjunction with an IFRAME element.

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.1.0 - 1.19.10, 1.20 - 1.22.2

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External links
https://lists.wikimedia.org/pipermail/mediawiki-announce/2014-February/000141.html
https://openwall.com/lists/oss-security/2014/02/28/1
https://openwall.com/lists/oss-security/2014/03/01/2
https://www.securityfocus.com/bid/65910
https://bugzilla.redhat.com/show_bug.cgi?id=1071135
https://bugzilla.wikimedia.org/show_bug.cgi?id=60771
https://gerrit.wikimedia.org/r/#/q/7d923a6b53f7fbcb0cbc3a19797d741bf6f440eb,n,z

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.