CVE-2012-4643 (GCVE-0-2012-4643)

Vulnerability from cvelistv5 – Published: 2012-10-29 20:00 – Updated: 2024-08-06 20:42
VLAI
Summary
The DHCP server on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 7.0 before 7.2(5.8), 7.1 before 7.2(5.8), 7.2 before 7.2(5.8), 8.0 before 8.0(5.28), 8.1 before 8.1(2.56), 8.2 before 8.2(5.27), 8.3 before 8.3(2.31), 8.4 before 8.4(3.10), 8.5 before 8.5(1.9), and 8.6 before 8.6(1.5) does not properly allocate memory for DHCP packets, which allows remote attackers to cause a denial of service (device reload) via a series of crafted IPv4 packets, aka Bug ID CSCtw84068.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 431 records in the last 180 days details
References
URL Tags
http://www.securityfocus.com/bid/55861 vdb-entryx_refsource_BID
http://tools.cisco.com/security/center/content/Ci… vendor-advisoryx_refsource_CISCO
http://osvdb.org/86145 vdb-entryx_refsource_OSVDB
Date Public
2012-10-10 00:00
Show details on NVD website
To clipboard 

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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The DHCP server on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 7.0 before 7.2(5.8), 7.1 before 7.2(5.8), 7.2 before 7.2(5.8), 8.0 before 8.0(5.28), 8.1 before 8.1(2.56), 8.2 before 8.2(5.27), 8.3 before 8.3(2.31), 8.4 before 8.4(3.10), 8.5 before 8.5(1.9), and 8.6 before 8.6(1.5) does not properly allocate memory for DHCP packets, which allows remote attackers to cause a denial of service (device reload) via a series of crafted IPv4 packets, aka Bug ID CSCtw84068."
        },
        {
          "lang": "es",
          "value": "El servidor DHCP en dispositivos Cisco de las series Adaptive Security Appliances (ASA) 5500, y ASA Services Module (ASASM) en dispositivos Cisco de la serie Catalyst 6500, con software v7.0 anterior a v7.2(5.8), v7.1 anterior a v7.2(5.8), v7.2 anterior a v7.2(5.8), v8.0 anterior a v8.0(5.28), v8.1 anterior a v8.1(2.56), v8.2 anterior a v8.2(5.27), v8.3 anterior a v8.3(2.31), v8.4 anterior a v8.4(3.10), v8.5 anterior a v8.5(1.9), y v8.6 anterior a v8.6(1.5) no posiciona en memoria de forma adecuada los paquetes DHCP, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (recarga de dispositivo) a trav\u00e9s de una serie de paquetes IPv4 manipulados, tambi\u00e9n conocido como Bus ID CSCtw84068."
        }
      ],
      "id": "CVE-2012-4643",
      "lastModified": "2024-11-21T01:43:17.290",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "HIGH",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "COMPLETE",
              "baseScore": 7.1,
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
              "version": "2.0"
            },
            "exploitabilityScore": 8.6,
            "impactScore": 6.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ]
      },
      "published": "2012-10-29T20:55:01.103",
      "references": [
        {
          "source": "ykramarz@cisco.com",
          "url": "http://osvdb.org/86145"
        },
        {
          "source": "ykramarz@cisco.com",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20121010-asa"
        },
        {
          "source": "ykramarz@cisco.com",
          "url": "http://www.securityfocus.com/bid/55861"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://osvdb.org/86145"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20121010-asa"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securityfocus.com/bid/55861"
        }
      ],
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-399"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
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                ],
                "negate": false,
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              },
              {
                "cpeMatch": [
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                    "matchCriteriaId": "99DE48DF-A309-4A1C-B977-AE81B4EDB589",
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                ],
                "negate": false,
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              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The DHCP server on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 7.0 before 7.2(5.8), 7.1 before 7.2(5.8), 7.2 before 7.2(5.8), 8.0 before 8.0(5.28), 8.1 before 8.1(2.56), 8.2 before 8.2(5.27), 8.3 before 8.3(2.31), 8.4 before 8.4(3.10), 8.5 before 8.5(1.9), and 8.6 before 8.6(1.5) does not properly allocate memory for DHCP packets, which allows remote attackers to cause a denial of service (device reload) via a series of crafted IPv4 packets, aka Bug ID CSCtw84068."
          },
          {
            "lang": "es",
            "value": "El servidor DHCP en dispositivos Cisco de las series Adaptive Security Appliances (ASA) 5500, y ASA Services Module (ASASM) en dispositivos Cisco de la serie Catalyst 6500, con software v7.0 anterior a v7.2(5.8), v7.1 anterior a v7.2(5.8), v7.2 anterior a v7.2(5.8), v8.0 anterior a v8.0(5.28), v8.1 anterior a v8.1(2.56), v8.2 anterior a v8.2(5.27), v8.3 anterior a v8.3(2.31), v8.4 anterior a v8.4(3.10), v8.5 anterior a v8.5(1.9), y v8.6 anterior a v8.6(1.5) no posiciona en memoria de forma adecuada los paquetes DHCP, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (recarga de dispositivo) a trav\u00e9s de una serie de paquetes IPv4 manipulados, tambi\u00e9n conocido como Bus ID CSCtw84068."
          }
        ],
        "id": "CVE-2012-4643",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 7.1,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 6.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2012-10-29T20:55:01.103",
        "references": [
          {
            "source": "psirt@cisco.com",
            "url": "http://osvdb.org/86145"
          },
          {
            "source": "psirt@cisco.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20121010-asa"
          },
          {
            "source": "psirt@cisco.com",
            "url": "http://www.securityfocus.com/bid/55861"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://osvdb.org/86145"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20121010-asa"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/55861"
          }
        ],
        "sourceIdentifier": "psirt@cisco.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-399"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • 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.
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Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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