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7.5
CVSSv2

CVE-2011-2766

Published: 23/09/2011 Updated: 08/12/2020
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
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Vulnerability Summary

The FCGI (aka Fast CGI) module 0.70 up to and including 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 malicious users to bypass authentication via crafted HTTP headers.

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debian debian linux 5.0

debian debian linux 6.0

debian debian linux 7.0

Vendor Advisories

Debian CVElist Bug Report Logs: libfcgi-perl: [CVE-2011-2766] After reloading some environment vars become constants, that will be used if not overruled by the headers of new requests.
Debian Bug report logs - #607479 libfcgi-perl: [CVE-2011-2766] After reloading some environment vars become constants, that will be used if not overruled by the headers of new requests Package: libfcgi-perl; Maintainer for libfcgi-perl is Debian Perl Group <pkg-perl-maintainers@listsaliothdebianorg>; Source for libfcgi-perl is s ...
Amazon Linux AMI: ALAS-2011-005
The FCGI (aka Fast CGI) module 070 through 073 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

CWE-287http://www.openwall.com/lists/oss-security/2011/09/08/1http://www.securityfocus.com/bid/49549http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479https://rt.cpan.org/Public/Bug/Display.html?id=68380https://bugzilla.redhat.com/show_bug.cgi?id=736604http://www.openwall.com/lists/oss-security/2011/09/08/2http://www.debian.org/security/2011/dsa-2327http://www.mandriva.com/security/advisories?name=MDVSA-2012:001https://hermes.opensuse.org/messages/13155253https://hermes.opensuse.org/messages/13154637https://exchange.xforce.ibmcloud.com/vulnerabilities/69709https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479https://nvd.nist.gov
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2021-35000CVE-2024-4439unauthorizedCVE-2024-0042CVE-2024-31848CVE-2023-40694cache poisoningCVE-2024-23707firmware
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