[ GLSA 201206-09 ] MediaWiki: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: MediaWiki: Multiple vulnerabilities (GLSA 201206-09)
Severity: high
Exploitable: remote
Date: June 21, 2012
Bug(s): #366685, #409513
ID: 201206-09

Synopsis

Multiple vulnerabilities have been found in MediaWiki, the worst of
which leading to remote execution of arbitrary code.


Background

The MediaWiki wiki web application as used on wikipedia.org.

Affected Packages

Package: www-apps/mediawiki
Vulnerable: < 1.18.2
Unaffected: >= 1.18.2
Architectures: All supported architectures


Description

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


Impact

MediaWiki allows remote attackers to bypass authentication, to perform
imports from any wgImportSources wiki via a crafted POST request, to
conduct cross-site scripting (XSS) attacks or obtain sensitive
information, to inject arbitrary web script or HTML, to conduct
clickjacking attacks, to execute arbitrary PHP code, to inject arbitrary
web script or HTML, to bypass intended access restrictions and to obtain
sensitive information.


Workaround

There is no known workaround at this time.

Resolution

All MediaWiki users should upgrade to the latest version: