A cross-site scripting (XSS) vulnerability in MediaWiki before 1.19.5 and 1.20.x before 1.20.4 and allows remote attackers to inject arbitrary web script or HTML via Lua function names.

The remote host is affected by the vulnerability described in GLSA-201310-21 (MediaWiki: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in MediaWiki. Please       review the CVE identifiers referenced below for details.
  Impact :

    A remote attacker may be able to execute arbitrary code, perform       man-in-the-middle attacks, obtain sensitive information or perform       cross-site scripting attacks.
  Workaround :

    There is no known workaround at this time.

*An internal review discovered that specially crafted Lua function names could lead to XSS.
https://bugzilla.wikimedia.org/show_bug.cgi?id=46084

*Daniel Franke reported that during SVG parsing, MediaWiki failed to prevent XML external entity (XXE) processing. This could lead to local file disclosure, or potentially remote command execution in environments that have enabled expect:// handling.
https://bugzilla.wikimedia.org/show_bug.cgi?id=46859

*Internal review also discovered that Special:Import, and Extension:RSS failed to prevent XML external entity (XXE) processing.
https://bugzilla.wikimedia.org/show_bug.cgi?id=47251

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to its version number, the instance of MediaWiki running on the remote host is affected by multiple security vulnerabilities :

  - A flaw exists because the application fails to validate     input passed via Lua function names before returning it     to the user. This allows a remote attacker to conduct     cross-site scripting (XSS) attacks.

  - Multiple XML external entity (XXE) flaws exist in     'Special:Import', 'SVG' parsing, and 'Extension:RSS'     from untrusted sources. This allows a remote attacker     to execute arbitrary commands and gain access to     arbitrary files.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
70677	GLSA-201310-21 : MediaWiki: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
66260	Fedora 18 : mediawiki-1.19.5-1.fc18 (2013-6171)	Nessus	Fedora Local Security Checks	medium
66259	Fedora 17 : mediawiki-1.19.5-1.fc17 (2013-6170)	Nessus	Fedora Local Security Checks	medium
66201	MediaWiki 1.19.x < 1.19.5 / 1.20.x < 1.20.4 Multiple Vulnerabilities	Nessus	CGI abuses	medium

Detections

Analytics

CVE-2013-1951

medium

Tenable Plugins

high

medium

medium

medium