Vulnerability in MediaWiki
CVE-2015-2942
MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM, allows remote attackers to cause a denial of service (CPU and memory consumption) via a large number of nested entity references in an (1) SVG file or (2) XMP metadata in a PDF file, aka a "billion laughs attack," a different vulnerability than CVE-2015-2937.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.1 (High). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.028 (86.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- MediaWiki — versions 1.20, 1.20.1, 1.20.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.gentoo.org/glsa/201510-05 (vendor-advisory)
- www.securityfocus.com/bid/73477 (vdb-entry)
- www.openwall.com/lists/oss-security/2015/04/07/3 (mailing-list)
- www.openwall.com/lists/oss-security/2015/04/01/1 (mailing-list)
- lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html (Vendor Advisory, mailing-list, Patch)
- phabricator.wikimedia.org/T85848 (Exploit)
Frequently asked questions
- What is CVE-2015-2942?
- CVE-2015-2942 is a vulnerability in MediaWiki, classified under CWE-399. Published 2015-04-13.
- Is CVE-2015-2942 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.