FKIE_CVE-2011-2766

Vulnerability from fkie_nvd - Published: 2011-09-23 10:55 - Updated: 2026-06-16 23:31
Severity
Summary
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
cve@mitre.orghttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479Exploit, Issue Tracking, Mailing List, Third Party Advisory
cve@mitre.orghttp://www.debian.org/security/2011/dsa-2327Third Party Advisory
cve@mitre.orghttp://www.mandriva.com/security/advisories?name=MDVSA-2012:001Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2011/09/08/1Mailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2011/09/08/2Mailing List, Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/49549Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=736604Exploit, Issue Tracking, Third Party Advisory
cve@mitre.orghttps://exchange.xforce.ibmcloud.com/vulnerabilities/69709Third Party Advisory, VDB Entry
cve@mitre.orghttps://hermes.opensuse.org/messages/13154637Broken Link
cve@mitre.orghttps://hermes.opensuse.org/messages/13155253Broken Link
cve@mitre.orghttps://rt.cpan.org/Public/Bug/Display.html?id=68380Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479Exploit, Issue Tracking, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2011/dsa-2327Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.mandriva.com/security/advisories?name=MDVSA-2012:001Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2011/09/08/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2011/09/08/2Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/49549Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=736604Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/69709Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://hermes.opensuse.org/messages/13154637Broken Link
af854a3a-2127-422b-91ae-364da2661108https://hermes.opensuse.org/messages/13155253Broken Link
af854a3a-2127-422b-91ae-364da2661108https://rt.cpan.org/Public/Bug/Display.html?id=68380Exploit, Patch, Third Party Advisory
Impacted products
Vendor Product Version
fast_cgi_project fast_cgi *
debian debian_linux 5.0
debian debian_linux 6.0
debian debian_linux 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fast_cgi_project:fast_cgi:*:*:*:*:*:perl:*:*",
              "matchCriteriaId": "16AEBF10-D97B-4BC0-AF31-892ECA37EB06",
              "versionEndIncluding": "0.73",
              "versionStartIncluding": "0.70",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "8C757774-08E7-40AA-B532-6F705C8F7639",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "036E8A89-7A16-411F-9D31-676313BB7244",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "El m\u00f3dulo FCGI (tambi\u00e9n conocido como Fast CGI) v0.70 hasta v0.73 para Perl, como se usa en CGI::Fast, usa valores de variables de entorno para una peticni\u00f3n durante el procesado de una petici\u00f3n posterior, lo que permite a atacantes remotos eludir la autenticaci\u00f3n a trav\u00e9s de cabeceras HTTP modificadas."
    }
  ],
  "id": "CVE-2011-2766",
  "lastModified": "2026-06-16T23:31:57.633",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2011-09-23T10:55:03.240",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.debian.org/security/2011/dsa-2327"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:001"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2011/09/08/1"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2011/09/08/2"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/49549"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=736604"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69709"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link"
      ],
      "url": "https://hermes.opensuse.org/messages/13154637"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link"
      ],
      "url": "https://hermes.opensuse.org/messages/13155253"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://rt.cpan.org/Public/Bug/Display.html?id=68380"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.debian.org/security/2011/dsa-2327"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:001"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2011/09/08/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2011/09/08/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/49549"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=736604"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "VDB Entry"
      ],
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69709"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://hermes.opensuse.org/messages/13154637"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Patch",
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      "url": "https://rt.cpan.org/Public/Bug/Display.html?id=68380"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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