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CVE-2009-2051

Estado: ModificadaAlta (7.8)—

Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), and 7.x before 7.1(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a malformed SIP INVITE message that triggers an improper call to the sipSafeStrlen function, aka Bug IDs CSCsz40392 and CSCsz43987.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

Cisco — IOSCisco — IOS XECisco — Unified Communications Manager

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2009-2051",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-08-27T17:00:00.953",
  "references": [
    {
      "url": "http://osvdb.org/57453",
      "tags": [
        "Broken Link"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://secunia.com/advisories/36498",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://secunia.com/advisories/36499",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af2d11.shtml",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4a30f.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/36152",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1022775",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://osvdb.org/57453",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/36498",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/36499",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af2d11.shtml",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b4a30f.shtml",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/36152",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1022775",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 4.x, 5.x before 5.1(3g), 6.x before 6.1(4), and 7.x before 7.1(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via a malformed SIP INVITE message that triggers an improper call to the sipSafeStrlen function, aka Bug IDs CSCsz40392 and CSCsz43987."
    },
    {
      "lang": "es",
      "value": "Cisco Unified Communications Manager (también conocido como CUCM, formalmente CallManager) v4.x, v5.x anteriores a v5.1(3g), v6.x anteriores v6.1(4), y v7.x anteriores v7.1(2) permite a los atacantes remotos causar una denegación de servicio (parada del servicio de voz) a través de mensajes malformados SIP INVITE que lanzan una llamada incorrecta a la función sipSafeStrlen, también conocida como Bug ID CSCsz40392."
    }
  ],
  "lastModified": "2026-06-16T23:08:39.720",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B48B0779-7796-45D2-8967-459F562A6243",
              "versionEndExcluding": "5.1\\(3g\\)",
              "versionStartIncluding": "5.0"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "98AF7F97-8702-4E7B-BDE4-BD5A3114FDF4",
              "versionEndExcluding": "6.1\\(4\\)",
              "versionStartIncluding": "6.1\\(1\\)"
            },
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "96DB29BF-9A40-4591-BE41-C519B86C2EEF",
              "versionEndExcluding": "7.1\\(2\\)",
              "versionStartIncluding": "7.1"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FBB64D7E-7C96-4A3D-BA83-60EE8D5DFB21",
              "versionEndIncluding": "12.4",
              "versionStartIncluding": "12.2"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "537031DB-5ADF-475E-BFFA-9092652BF2B6",
              "versionEndIncluding": "15.1",
              "versionStartIncluding": "15.0"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2DEE9D2D-BE50-4216-8F7E-CB6F46880E08",
              "versionEndIncluding": "2.6.1",
              "versionStartIncluding": "2.5.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}