MSRC_CVE-2009-3767

Vulnerability from csaf_microsoft - Published: 2009-10-02 00:00 - Updated: 2020-09-25 00:00
Summary
libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4 and possibly other versions when OpenSSL is used does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority a related issue to CVE-2009-2408.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2009-3767 libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4 and possibly other versions when OpenSSL is used does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s Common Name (CN) field of an X.509 certificate which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority a related issue to CVE-2009-2408. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2009/msrc_cve-2009-3767.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4 and possibly other versions when OpenSSL is used does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s Common Name (CN) field of an X.509 certificate which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority a related issue to CVE-2009-2408.",
    "tracking": {
      "current_release_date": "2020-09-25T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T16:38:46.076Z",
        "engine": {
          "name": "MSRC Generator",
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        }
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      "id": "msrc_CVE-2009-3767",
      "initial_release_date": "2009-10-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2020-09-25T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 openssl 1.1.1k-5",
                "product": {
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            ],
            "category": "product_name",
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          },
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            "branches": [
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                "name": "\u003ccm1 openldap 2.4.57-2",
                "product": {
                  "name": "\u003ccm1 openldap 2.4.57-2",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 openldap 2.4.57-2",
                "product": {
                  "name": "cm1 openldap 2.4.57-2",
                  "product_id": "16831"
                }
              }
            ],
            "category": "product_name",
            "name": "openldap"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
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        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 openssl 1.1.1k-5 as a component of CBL Mariner 1.0",
          "product_id": "16820-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "16820"
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      {
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        "product_reference": "16831",
        "relates_to_product_reference": "16820"
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2009-3767",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "16878-16820",
          "16831-16820"
        ],
        "known_affected": [
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          "16820-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2009-3767 libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4 and possibly other versions when OpenSSL is used does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s Common Name (CN) field of an X.509 certificate which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority a related issue to CVE-2009-2408. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2009/msrc_cve-2009-3767.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-09-25T00:00:00.000Z",
          "details": "-:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2020-09-25T00:00:00.000Z",
          "details": "2.4.57-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "title": "libraries/libldap/tls_o.c in OpenLDAP 2.2 and 2.4 and possibly other versions when OpenSSL is used does not properly handle a \u0027\\0\u0027 character in a domain name in the subject\u0027s Common Name (CN) field of an X.509 certificate which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority a related issue to CVE-2009-2408."
    }
  ]
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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