CVE-2011-1579

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    CVE-2011-1579

    Published: 27 Apr 2011Last Modified: 10 Apr 2026

    Summary:

    Details: The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \2f\2a and \2a\2f hex strings to surround CSS comments.

    References: http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html, http://secunia.com/advisories/44142, http://www.debian.org/security/2011/dsa-2366, http://www.vupen.com/english/advisories/2011/0978, http://www.vupen.com/english/advisories/2011/1100, http://www.vupen.com/english/advisories/2011/1151, http://www.mediawiki.org/wiki/Special:Code/MediaWiki/85856, http://www.mediawiki.org/wiki/Special:Code/MediaWiki/85856, http://www.vupen.com/english/advisories/2011/0978, https://bugzilla.redhat.com/show_bug.cgi?id=695577, https://bugzilla.redhat.com/show_bug.cgi?id=696360, https://bugzilla.wikimedia.org/show_bug.cgi?id=28450, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html, http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html, http://openwall.com/lists/oss-security/2011/04/13/15, http://www.securityfocus.com/bid/47354, https://exchange.xforce.ibmcloud.com/vulnerabilities/66738

    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