FKIE_CVE-2009-2661

Vulnerability from fkie_nvd - Published: 2009-08-04 16:30 - Updated: 2026-06-16 23:09
Severity
Summary
The asn1_length function in strongSwan 2.8 before 2.8.11, 4.2 before 4.2.17, and 4.3 before 4.3.3 does not properly handle X.509 certificates with crafted Relative Distinguished Names (RDNs), which allows remote attackers to cause a denial of service (pluto IKE daemon crash) via malformed ASN.1 data. NOTE: this is due to an incomplete fix for CVE-2009-2185.
References
cve@mitre.orghttp://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
cve@mitre.orghttp://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patchPatch
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
cve@mitre.orghttp://secunia.com/advisories/36922
cve@mitre.orghttp://up2date.astaro.com/2009/08/up2date_7505_released.html
cve@mitre.orghttp://www.debian.org/security/2009/dsa-1899
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2009/07/27/1
cve@mitre.orghttp://www.vupen.com/english/advisories/2009/2247
cve@mitre.orghttps://lists.strongswan.org/pipermail/announce/2009-July/000056.htmlPatch
af854a3a-2127-422b-91ae-364da2661108http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch
af854a3a-2127-422b-91ae-364da2661108http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patchPatch
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36922
af854a3a-2127-422b-91ae-364da2661108http://up2date.astaro.com/2009/08/up2date_7505_released.html
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2009/dsa-1899
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2009/07/27/1
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2009/2247
af854a3a-2127-422b-91ae-364da2661108https://lists.strongswan.org/pipermail/announce/2009-July/000056.htmlPatch
Impacted products
Vendor Product Version
strongswan strongswan 2.8.0
strongswan strongswan 2.8.1
strongswan strongswan 2.8.2
strongswan strongswan 2.8.3
strongswan strongswan 2.8.4
strongswan strongswan 2.8.5
strongswan strongswan 2.8.6
strongswan strongswan 2.8.7
strongswan strongswan 2.8.8
strongswan strongswan 2.8.10
strongswan strongswan 4.2.0
strongswan strongswan 4.2.1
strongswan strongswan 4.2.2
strongswan strongswan 4.2.3
strongswan strongswan 4.2.10
strongswan strongswan 4.2.11
strongswan strongswan 4.2.12
strongswan strongswan 4.2.13
strongswan strongswan 4.2.14
strongswan strongswan 4.2.15
strongswan strongswan 4.2.16
strongswan strongswan 4.3.0
strongswan strongswan 4.3.1
strongswan strongswan 4.3.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "5518A917-D5D1-4985-BF71-B1A34BD3D5B4",
              "vulnerable": true
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              "vulnerable": true
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              "vulnerable": true
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              "matchCriteriaId": "FEDBF811-7E48-4E99-AE05-FFC12AAF1CDF",
              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The asn1_length function in strongSwan 2.8 before 2.8.11, 4.2 before 4.2.17, and 4.3 before 4.3.3 does not properly handle X.509 certificates with crafted Relative Distinguished Names (RDNs), which allows remote attackers to cause a denial of service (pluto IKE daemon crash) via malformed ASN.1 data.  NOTE: this is due to an incomplete fix for CVE-2009-2185."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n asn1_length en strongSwan 2.8 antes de 2.8.11, 4.2 antes de 4.2.17 y 4.3 antes de 4.3.3 no maneja adecuadamente certificados X.509 con Relative Distinguished Names (RDNs) modificados, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda del demonio pluto IKE) mediante  datos ASN.1 malformados. NOTA: Esto es debido a una soluci\u00f3n incompleta de CVE-2009-2185."
    }
  ],
  "id": "CVE-2009-2661",
  "lastModified": "2026-06-16T23:09:56.540",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2009-08-04T16:30:00.483",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://secunia.com/advisories/36922"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://up2date.astaro.com/2009/08/up2date_7505_released.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.debian.org/security/2009/dsa-1899"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.openwall.com/lists/oss-security/2009/07/27/1"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.vupen.com/english/advisories/2009/2247"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://lists.strongswan.org/pipermail/announce/2009-July/000056.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.3.x_asn1_length.patch"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://download.strongswan.org/patches/07_asn1_length_patch/strongswan-4.x.x_asn1_length.patch"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/36922"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://up2date.astaro.com/2009/08/up2date_7505_released.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2009/dsa-1899"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2009/07/27/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.vupen.com/english/advisories/2009/2247"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://lists.strongswan.org/pipermail/announce/2009-July/000056.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.


Detection rules are retrieved from Rulezet.