FKIE_CVE-2009-3639

Vulnerability from fkie_nvd - Published: 2009-10-28 14:30 - Updated: 2026-06-16 23:12
Severity
Summary
The mod_tls module in ProFTPD before 1.3.2b, and 1.3.3 before 1.3.3rc2, when the dNSNameRequired TLS option is enabled, does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 client certificate, which allows remote attackers to bypass intended client-hostname restrictions via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
References
secalert@redhat.comhttp://bugs.proftpd.org/show_bug.cgi?id=3275
secalert@redhat.comhttp://marc.info/?l=oss-security&m=125630966510672&w=2
secalert@redhat.comhttp://marc.info/?l=oss-security&m=125632960508211&w=2
secalert@redhat.comhttp://secunia.com/advisories/37131Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/37219
secalert@redhat.comhttp://www.debian.org/security/2009/dsa-1925
secalert@redhat.comhttp://www.mandriva.com/security/advisories?name=MDVSA-2009:288
secalert@redhat.comhttp://www.securityfocus.com/bid/36804Patch
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=530719Patch
secalert@redhat.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/53936
secalert@redhat.comhttps://www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html
secalert@redhat.comhttps://www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html
af854a3a-2127-422b-91ae-364da2661108http://bugs.proftpd.org/show_bug.cgi?id=3275
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=oss-security&m=125630966510672&w=2
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=oss-security&m=125632960508211&w=2
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37131Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37219
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2009/dsa-1925
af854a3a-2127-422b-91ae-364da2661108http://www.mandriva.com/security/advisories?name=MDVSA-2009:288
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/36804Patch
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=530719Patch
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/53936
af854a3a-2127-422b-91ae-364da2661108https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html
af854a3a-2127-422b-91ae-364da2661108https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html
Impacted products
Vendor Product Version
proftpd proftpd *
proftpd proftpd 1.3.1
proftpd proftpd 1.3.2
proftpd proftpd 1.3.2
proftpd proftpd 1.3.2
proftpd proftpd 1.3.2
proftpd proftpd 1.3.3
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:*:a:*:*:*:*:*:*",
              "matchCriteriaId": "8ADC9F57-ADAE-4620-97ED-EBF96BEBF3A9",
              "versionEndIncluding": "1.3.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:1.3.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "0629F25F-B9C6-4FC7-B67E-E6B38E59E60B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:1.3.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "185E727C-E4DB-4713-866D-957D20838D97",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:1.3.2:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "8B43EDB7-7B67-43E0-AAE9-F8120C6E607C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:1.3.2:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "F615B39A-5E30-454B-B851-14C5735578E3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:1.3.2:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "5884F593-C977-4AFC-9428-6A915D962C97",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:proftpd:proftpd:1.3.3:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "29FBDF30-0E17-46DA-8548-DEE5E3CD9EAB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The mod_tls module in ProFTPD before 1.3.2b, and 1.3.3 before 1.3.3rc2, when the dNSNameRequired TLS option is enabled, does not properly handle a \u0027\\0\u0027 character in a domain name in the Subject Alternative Name field of an X.509 client certificate, which allows remote attackers to bypass intended client-hostname restrictions via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408."
    },
    {
      "lang": "es",
      "value": "El m\u00f3dulo mod_tls en ProFTPD anterior v1.3.2b, y v1.3.3 anterior v1.3.3rc2, cuando la opci\u00f3n dNSNameRequired TLS es activada, no maneja adecuadamente el caracter \u0027/0\u0027 en un nombre de dominio, dentro del campo Subject Alternative Name de un certificado cliente X.509, lo que permite a atacantes remotos eludir las restricciones cliente-hostname a trav\u00e9s de un certificado manipulado concedido por una Autoridad Certificadora leg\u00edtima, esta relacionado con CVE-2009-2408."
    }
  ],
  "id": "CVE-2009-3639",
  "lastModified": "2026-06-16T23:12:04.440",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2009-10-28T14:30:00.217",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://bugs.proftpd.org/show_bug.cgi?id=3275"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://marc.info/?l=oss-security\u0026m=125630966510672\u0026w=2"
    },
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      "source": "secalert@redhat.com",
      "url": "http://marc.info/?l=oss-security\u0026m=125632960508211\u0026w=2"
    },
    {
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      "tags": [
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      "url": "http://secunia.com/advisories/37131"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://secunia.com/advisories/37219"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2009/dsa-1925"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:288"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      "url": "http://www.securityfocus.com/bid/36804"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=530719"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/53936"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00642.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-November/msg00649.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://bugs.proftpd.org/show_bug.cgi?id=3275"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://marc.info/?l=oss-security\u0026m=125630966510672\u0026w=2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://marc.info/?l=oss-security\u0026m=125632960508211\u0026w=2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
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      "url": "http://secunia.com/advisories/37131"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/37219"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2009/dsa-1925"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:288"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "http://www.securityfocus.com/bid/36804"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=530719"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/53936"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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