CVE-2015-2931 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script or HTML via crafted SVG files in MediaWiki, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2015-2931?
CVE-2015-2931 is a medium-severity cross-site scripting vulnerability in Mediawiki Mediawiki, published on 13 Apr 2015. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2015-2931?
It affects 1 product.
Products include Mediawiki Mediawiki.
How do I fix CVE-2015-2931?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2015-2931 being exploited?
There is no known exploitation of CVE-2015-2931 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as DEBIAN-CVE-2015-2931, GHSA-m3mr-7w8m-ffxc.