CVE-2011-4317 (GCVE-0-2011-4317)

Vulnerability from cvelistv5 – Published: 2011-11-30 02:00 – Updated: 2024-08-07 00:01
VLAI
Summary
The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an @ (at sign) character and a : (colon) character in invalid positions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368.
Severity
No CVSS data available.
CWE
  • n/a
References
URL Tags
https://community.qualys.com/blogs/securitylabs/2… x_refsource_MISC
http://h20000.www2.hp.com/bizsupport/TechSupport/… vendor-advisoryx_refsource_HP
http://marc.info/?l=bugtraq&m=134987041210674&w=2 vendor-advisoryx_refsource_HP
http://marc.info/?l=bugtraq&m=133294460209056&w=2 vendor-advisoryx_refsource_HP
http://rhn.redhat.com/errata/RHSA-2012-0128.html vendor-advisoryx_refsource_REDHAT
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=756483 x_refsource_CONFIRM
http://thread.gmane.org/gmane.comp.apache.devel/46440 x_refsource_CONFIRM
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://support.apple.com/kb/HT5501 x_refsource_CONFIRM
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-updates/2013-0… vendor-advisoryx_refsource_SUSE
http://www.securitytracker.com/id?1026353 vdb-entryx_refsource_SECTRACK
http://lists.opensuse.org/opensuse-updates/2013-0… vendor-advisoryx_refsource_SUSE
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://secunia.com/advisories/48551 third-party-advisoryx_refsource_SECUNIA
http://www.debian.org/security/2012/dsa-2405 vendor-advisoryx_refsource_DEBIAN
http://kb.juniper.net/JSA10585 x_refsource_CONFIRM
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
https://lists.apache.org/thread.html/8d63cb8e9100… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/f7f95ac1cd98… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r57608dc51b7… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rfbaf647d52c… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf6449464fd8… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9ea3538f229… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9b4b963760a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r05b5357d1f6… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r1d201e3da31… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rdca61ae9906… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rad01d817195… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r476d175be0a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r75cbe9ea3e2… mailing-listx_refsource_MLIST
Date Public
2011-11-23 00:00
Show details on NVD website

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                },
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                  "matchCriteriaId": "B0B8C9DB-401E-42B3-BAED-D09A96DE9A90",
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                  "matchCriteriaId": "062C20A0-05A0-4164-8330-DF6ADFE607F4",
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                {
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an @ (at sign) character and a : (colon) character in invalid positions.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368."
        },
        {
          "lang": "es",
          "value": "El m\u00f3dulo mod_proxy en el servidor HTTP Apache v1.3.x hasta v1.3.42, v2.0.x hasta v2.0.64, and v2.2.x hasta v2.2.21, cuando la revisi\u00f3n 1179239 se realiza, no interact\u00faa con el uso de patrones de coincidencia (1) RewriteRule y (2) ProxyPassMatch  para configuraci\u00f3n de un proxy inverso, lo que permite a atacantes remotos enviar peticiones a servidores de la intranet a trav\u00e9s de URI mal formadas que contienen el caracter \u0027@\u0027: caracter en una posici\u00f3n inv\u00e1lida. NOTA: esta vulnerabilidad existe debido a una soluci\u00f3n incompleta para CVE-2011-3368."
        }
      ],
      "id": "CVE-2011-4317",
      "lastModified": "2024-11-21T01:32:13.477",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "confidentialityImpact": "NONE",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
              "version": "2.0"
            },
            "exploitabilityScore": 8.6,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ]
      },
      "published": "2011-11-30T04:05:58.670",
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            "value": "The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an @ (at sign) character and a : (colon) character in invalid positions.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368."
          },
          {
            "lang": "es",
            "value": "El m\u00f3dulo mod_proxy en el servidor HTTP Apache v1.3.x hasta v1.3.42, v2.0.x hasta v2.0.64, and v2.2.x hasta v2.2.21, cuando la revisi\u00f3n 1179239 se realiza, no interact\u00faa con el uso de patrones de coincidencia (1) RewriteRule y (2) ProxyPassMatch  para configuraci\u00f3n de un proxy inverso, lo que permite a atacantes remotos enviar peticiones a servidores de la intranet a trav\u00e9s de URI mal formadas que contienen el caracter \u0027@\u0027: caracter en una posici\u00f3n inv\u00e1lida. NOTA: esta vulnerabilidad existe debido a una soluci\u00f3n incompleta para CVE-2011-3368."
          }
        ],
        "id": "CVE-2011-4317",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2011-11-30T04:05:58.670",
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          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              }
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            "source": "nvd@nist.gov",
            "type": "Primary"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T22:06:57+00:00",
      "cve": "CVE-2011-4317",
      "id": "CVE-2011-4317",
      "initial_release_date": "2011-11-23T00:00:00+00:00",
      "product_status:fixed": "64",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: uri scheme bypass of the reverse proxy vulnerability CVE-2011-3368 fix",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-4317.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-08-23T00:54:23Z",
      "cve": "CVE-2011-4317",
      "id": "CVE-2011-4317",
      "initial_release_date": "2023-02-15T05:50:02Z",
      "product_status:known_affected": "3",
      "product_status:recommended": "259",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2011-4317",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-4317.json",
      "version": "12"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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