MediaWiki: Multiple vulnerabilities

Background

MediaWiki is a collaborative editing software used by large projects such as Wikipedia.

Description

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

Impact

A remote attacker may be able to execute arbitrary code with the privileges of the process, create a Denial of Service condition, obtain sensitive information, bypass security restrictions, and inject arbitrary web script or HTML.

Workaround

There is no known workaround at this time.

Resolution

All MediaWiki 1.23 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.23.8"

All MediaWiki 1.22 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.22.15"

All MediaWiki 1.19 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.19.23"