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Last updated: 12/22/2014 5:40:17 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2011-2766

Original release date: 09/23/2011
Last revised: 11/05/2012
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MLIST
Name: [oss-security] 20110908 Re: CVE Request -- libfcgi-perl / perl-FCGI: Certain environment variables shared between first and subsequent HTTP requests
Type: Patch Information; Exploit
External Source: SUSE
Name: openSUSE-SU-2012:0036
External Source: XF
Name: perlfast-cgi-security-bypass(69709)
External Source: BID
Name: 49549
External Source: DEBIAN
Name: DSA-2327
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=736604
Type: Patch Information; Exploit
External Source: CONFIRM
Name: https://rt.cpan.org/Public/Bug/Display.html?id=68380
Type: Patch Information; Exploit
External Source: MANDRIVA
Name: MDVSA-2012:001
External Source: SUSE
Name: openSUSE-SU-2012:0004
External Source: CONFIRM
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479
Type: Patch Information; Exploit
External Source: MLIST
Name: [oss-security] 20110908 CVE Request -- libfcgi-perl / perl-FCGI: Certain environment variables shared between first and subsequent HTTP requests
Type: Patch Information; Exploit

Technical Details

Vulnerability Type (View All)