CVE-2015-2942

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    CVE-2015-2942

    Published: 13 Apr 2015Last Modified: 10 Apr 2026

    Summary:

    Details: 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.

    References: https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html, https://security.gentoo.org/glsa/201510-05, https://phabricator.wikimedia.org/T85848, https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html, http://www.openwall.com/lists/oss-security/2015/04/01/1, http://www.openwall.com/lists/oss-security/2015/04/07/3, http://www.securityfocus.com/bid/73477

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High