CVE-2011-2766

    Dashboard / Vulnerabilities / CVE-2011-2766

    CVE-2011-2766

    Published: 23 Sept 2011Last Modified: 10 Apr 2026

    Summary:

    Details: The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.

    References: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479, http://www.debian.org/security/2011/dsa-2327, http://www.mandriva.com/security/advisories?name=MDVSA-2012:001, http://www.openwall.com/lists/oss-security/2011/09/08/1, http://www.openwall.com/lists/oss-security/2011/09/08/2, http://www.securityfocus.com/bid/49549, https://bugzilla.redhat.com/show_bug.cgi?id=736604, https://exchange.xforce.ibmcloud.com/vulnerabilities/69709, https://rt.cpan.org/Public/Bug/Display.html?id=68380, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479, http://www.openwall.com/lists/oss-security/2011/09/08/1, http://www.openwall.com/lists/oss-security/2011/09/08/2, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479, https://bugzilla.redhat.com/show_bug.cgi?id=736604, https://rt.cpan.org/Public/Bug/Display.html?id=68380, https://rt.cpan.org/Public/Bug/Display.html?id=68380, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479, https://bugzilla.redhat.com/show_bug.cgi?id=736604, https://hermes.opensuse.org/messages/13154637, https://hermes.opensuse.org/messages/13155253

    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
    CVE-2011-2766 | CVE-DB