medium
4.3
CWE
79
Advisory Published
Updated

CVE-2015-2931: XSS

First published: Mon Apr 13 2015(Updated: )

Incomplete blacklist vulnerability in includes/upload/UploadBase.php in MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2 allows remote attackers to inject arbitrary web script or HTML via an application/xml MIME type for a nested SVG with a data: URI.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
MediaWiki<=1.19.23
MediaWiki=1.20
MediaWiki=1.20.1
MediaWiki=1.20.2
MediaWiki=1.20.3
MediaWiki=1.20.4
MediaWiki=1.20.5
MediaWiki=1.20.6
MediaWiki=1.20.7
MediaWiki=1.20.8
MediaWiki=1.21
MediaWiki=1.21.1
MediaWiki=1.21.2
MediaWiki=1.21.3
MediaWiki=1.21.4
MediaWiki=1.21.5
MediaWiki=1.21.6
MediaWiki=1.21.7
MediaWiki=1.21.8
MediaWiki=1.21.9
MediaWiki=1.21.10
MediaWiki=1.21.11
MediaWiki=1.22.0
MediaWiki=1.22.1
MediaWiki=1.22.2
MediaWiki=1.22.3
MediaWiki=1.22.4
MediaWiki=1.22.5
MediaWiki=1.22.6
MediaWiki=1.22.7
MediaWiki=1.22.8
MediaWiki=1.22.9
MediaWiki=1.22.10
MediaWiki=1.22.11
MediaWiki=1.22.12
MediaWiki=1.22.13
MediaWiki=1.22.14
MediaWiki=1.22.15
MediaWiki=1.23.0
MediaWiki=1.23.1
MediaWiki=1.23.2
MediaWiki=1.23.3
MediaWiki=1.23.4
MediaWiki=1.23.5
MediaWiki=1.23.6
MediaWiki=1.23.7
MediaWiki=1.23.8
MediaWiki=1.24.0
MediaWiki=1.24.1

Remedy

https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-2931?

    CVE-2015-2931 is classified as a medium severity vulnerability.

  • How do I fix CVE-2015-2931?

    To mitigate CVE-2015-2931, upgrade your MediaWiki installation to version 1.19.24 or later, or 1.23.9 and later, or 1.24.2 and later.

  • What does CVE-2015-2931 affect?

    CVE-2015-2931 affects MediaWiki versions prior to 1.19.24, all of 1.20.x, and several versions of 1.21.x through 1.24.x.

  • What type of attack does CVE-2015-2931 enable?

    CVE-2015-2931 allows remote attackers to inject arbitrary web scripts or HTML via an application/xml MIME type for a nested SVG with a data URI.

  • Is there a workaround for CVE-2015-2931?

    The recommended workaround for CVE-2015-2931 is to apply the patches provided by the MediaWiki community or to upgrade to the latest version.

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