Sven Verdoolaege FCGI up to 0.73 CGI::Fast improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Sven Verdoolaege FCGI up to 0.73. It has been classified as problematic. This impacts the function CGI::Fast. The manipulation leads to improper authentication. This vulnerability is referenced as CVE-2011-2766. No exploit is available.

Detailsinfo

A vulnerability was found in Sven Verdoolaege FCGI up to 0.73 and classified as critical. This issue affects the function CGI::Fast. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was published 09/23/2011 by Russ Allbery (Website). It is possible to read the advisory at rt.cpan.org. The identification of this vulnerability is CVE-2011-2766. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 74516 (openSUSE Security Update : FastCGI (openSUSE-2011-102)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350742 (Amazon Linux Security Advisory for perl-FCGI: ALAS-2011-005).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (69709), Tenable (74516), SecurityFocus (BID 49549†) and Vulnerability Center (SBV-33509†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74516
Nessus Name: openSUSE Security Update : FastCGI (openSUSE-2011-102)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70542
OpenVAS Name: Debian Security Advisory DSA 2327-1 (libfcgi-perl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

07/19/2011 🔍
09/09/2011 +52 days 🔍
09/23/2011 +14 days 🔍
09/23/2011 +0 days 🔍
09/23/2011 +0 days 🔍
10/11/2011 +18 days 🔍
06/13/2014 +976 days 🔍
03/23/2015 +283 days 🔍
01/12/2025 +3582 days 🔍

Sourcesinfo

Advisory: dsa-2327
Researcher: Russ Allbery
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2766 (🔍)
GCVE (CVE): GCVE-0-2011-2766
GCVE (VulDB): GCVE-100-58595

OVAL: 🔍

X-Force: 69709
SecurityFocus: 49549 - Perl Fast CGI Module CGI Variables Authentication Security Bypass Vulnerability
Vulnerability Center: 33509 - Perl FCGI Module 0.70-0.73 Remote Authentication Bypass via a Crafted HTTP Header, High

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/12/2025 00:51
Changes: 03/23/2015 16:50 (59), 04/03/2017 17:54 (10), 11/20/2021 16:56 (5), 11/20/2021 17:03 (1), 11/20/2021 17:11 (1), 01/12/2025 00:51 (16)
Complete: 🔍
Cache ID: 216::103

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