CVE-2015-2937 Denial of service in n/a
Remote attackers can cause denial of service in MediaWiki via crafted XML files with entity declarations, leading to excessive memory consumption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-2937?
CVE-2015-2937 is a high-severity denial of service vulnerability in Mediawiki Mediawiki, published on 13 Apr 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM or Zend PHP, allows remote attackers to cause a denial of service ("quadratic blowup" and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, a different vulnerability than CVE-2015-2942.
Weakness: CWE-399
Which versions are affected by CVE-2015-2937?
It affects 1 product.
Products include Mediawiki Mediawiki.
How do I fix CVE-2015-2937?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2015-2937 being exploited?
There is no known exploitation of CVE-2015-2937 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as DEBIAN-CVE-2015-2937, GHSA-g2xw-jrgp-4j4f.