#VU42417 Information disclosure in MediaWiki - CVE-2013-4301

Vulnerability identifier: #VU42417

Vulnerability risk: Medium

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

CVE-ID: CVE-2013-4301

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

includes/resourceloader/ResourceLoaderContext.php in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 allows remote attackers to obtain sensitive information via a "<" (open angle bracket) character in the lang parameter to w/load.php, which reveals the installation path in an error message.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.19.0 - 1.19.7, 1.20 - 1.21.1

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External links
https://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html
https://osvdb.org/96913
https://seclists.org/oss-sec/2013/q3/553
https://secunia.com/advisories/54715
https://bugzilla.wikimedia.org/show_bug.cgi?id=46332
https://exchange.xforce.ibmcloud.com/vulnerabilities/86895
https://www.mediawiki.org/wiki/Release_notes/1.19
https://www.mediawiki.org/wiki/Release_notes/1.20
https://www.mediawiki.org/wiki/Release_notes/1.21

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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.