CVE-2017-6741 (GCVE-0-2017-6741)

Vulnerability from cvelistv5 – Published: 2017-07-17 21:00 – Updated: 2025-07-31 16:23
VLAI
Summary
A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.  The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system. Only traffic directed to the affected system can be used to exploit this vulnerability.
CWE
  • CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
References
URL Tags
https://sec.cloudapps.cisco.com/security/center/c…
http://www.securityfocus.com/bid/99345 vdb-entryx_refsource_BIDx_transferred
http://www.securitytracker.com/id/1038808 vdb-entryx_refsource_SECTRACKx_transferred
https://tools.cisco.com/security/center/content/C… x_refsource_CONFIRMx_transferred
Impacted products
Vendor Product Version CPE status
Cisco Cisco IOS XE Software Affected: 3.7.0S
Affected: 3.7.1S
Affected: 3.7.2S
Affected: 3.7.3S
Affected: 3.7.4S
Affected: 3.7.5S
Affected: 3.7.6S
Affected: 3.7.7S
Affected: 3.7.4aS
Affected: 3.7.2tS
Affected: 3.7.0bS
Affected: 3.8.0S
Affected: 3.8.1S
Affected: 3.8.2S
Affected: 3.9.1S
Affected: 3.9.0S
Affected: 3.9.2S
Affected: 3.9.0aS
Affected: 3.11.1S
Affected: 3.11.2S
Affected: 3.11.0S
Affected: 3.11.3S
Affected: 3.11.4S
Affected: 3.12.0S
Affected: 3.12.1S
Affected: 3.12.2S
Affected: 3.12.3S
Affected: 3.12.0aS
Affected: 3.12.4S
Affected: 3.13.0S
Affected: 3.13.1S
Affected: 3.13.2S
Affected: 3.13.3S
Affected: 3.13.4S
Affected: 3.13.5S
Affected: 3.13.2aS
Affected: 3.13.0aS
Affected: 3.13.5aS
Affected: 3.13.6S
Affected: 3.13.7S
Affected: 3.13.6aS
Affected: 3.13.7aS
Affected: 3.6.5bE
Affected: 3.14.0S
Affected: 3.14.1S
Affected: 3.14.2S
Affected: 3.14.3S
Affected: 3.14.4S
Affected: 3.15.0S
Affected: 3.15.1S
Affected: 3.15.2S
Affected: 3.15.1cS
Affected: 3.15.3S
Affected: 3.15.4S
Affected: 3.16.0S
Affected: 3.16.1S
Affected: 3.16.1aS
Affected: 3.16.2S
Affected: 3.16.0cS
Affected: 3.16.3S
Affected: 3.16.2bS
Affected: 3.16.4aS
Affected: 3.16.4bS
Affected: 3.16.5S
Affected: 3.16.4dS
Affected: 3.17.0S
Affected: 3.17.1S
Affected: 3.17.2S
Affected: 3.17.1aS
Affected: 3.17.3S
Affected: 16.2.1
Affected: 16.2.2
Affected: 16.3.1
Affected: 16.3.2
Affected: 16.3.3
Affected: 16.3.1a
Affected: 16.3.4
Affected: 16.4.1
Affected: 16.4.2
Affected: 16.5.1
Affected: 16.5.1b
Affected: 3.18.0aS
Affected: 3.18.0S
Affected: 3.18.1S
Affected: 3.18.0SP
Affected: 3.18.1SP
Affected: 3.18.1aSP
Affected: 3.18.2aSP
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IntelliShield Universal Product Affected: N/A
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Show details on NVD website

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      "descriptions": [
        {
          "lang": "en",
          "value": "The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.2 through 3.17 contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities. The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP: Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable. Cisco Bug IDs: CSCve66658."
        },
        {
          "lang": "es",
          "value": "El protocolo SNMP (SimpleNetwork Management Protocol) de Cisco iOS 12.0 hasta la 12.4, 15.0 hasta la 15.6 e iOS XE 2.2 hasta la 3.17 contiene m\u00faltiples vulnerabilidades que pueden permitir una autenticaci\u00f3n a un atacante remoto para ejecutar c\u00f3digo remotamente en el sistema afectado o causar una recarga. Un atacante podr\u00eda explotar estas vulnerabilidades enviando un paquete SNMP manipulado al sistema afectado mediante IPv4 o IPv6. Solo el tr\u00e1fico directo al sistema afectado puede usarse para explotar estar vulnerabilidades. Esta vulnerabilidades son debidas a un buffer overflow en el subsistema SNMP del software afectado. Esta vulnerabilidad afecta a todas las versiones de SNMP: Versiones 1, 2c y 3. Para explotarlas en versiones 2c o anteriores, el atacante debe saber sobre la cadena comunitaria de solo lectura del SNMP del sistema afectado. Pra explotarlas en las versi\u00f3n 3, el atacante tiene que tener credenciales de usuario del sistema. Todos los dispositivos que tienen habilitado el SNMP y no tienen una exclusi\u00f3n explicita del MIB u OID afectado debe ser considerado vulnerable. Cisco Bug IDs: CSCve66658."
        }
      ],
      "id": "CVE-2017-6741",
      "lastModified": "2024-11-21T03:30:25.280",
      "metrics": {
        "cvssMetricV2": [
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            "acInsufInfo": false,
            "baseSeverity": "HIGH",
            "cvssData": {
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              "accessVector": "NETWORK",
              "authentication": "SINGLE",
              "availabilityImpact": "COMPLETE",
              "baseScore": 9.0,
              "confidentialityImpact": "COMPLETE",
              "integrityImpact": "COMPLETE",
              "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
              "version": "2.0"
            },
            "exploitabilityScore": 8.0,
            "impactScore": 10.0,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
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            "cvssData": {
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              "attackVector": "NETWORK",
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              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.0"
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            "exploitabilityScore": 2.8,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
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      },
      "published": "2017-07-17T21:29:00.417",
      "references": [
        {
          "source": "ykramarz@cisco.com",
          "tags": [
            "Third Party Advisory",
            "VDB Entry"
          ],
          "url": "http://www.securityfocus.com/bid/99345"
        },
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          "source": "ykramarz@cisco.com",
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            "VDB Entry"
          ],
          "url": "http://www.securitytracker.com/id/1038808"
        },
        {
          "source": "ykramarz@cisco.com",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
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          "url": "http://www.securityfocus.com/bid/99345"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory",
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          "url": "http://www.securitytracker.com/id/1038808"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
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          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
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      ],
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
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          "source": "ykramarz@cisco.com",
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                "negate": false,
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.\u0026nbsp;\r\n\r\n\r\n\r\nThe vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system.\r\n\r\n\r\n\r\nOnly traffic directed to the affected system can be used to exploit this vulnerability."
          },
          {
            "lang": "es",
            "value": "El protocolo SNMP (SimpleNetwork Management Protocol) de Cisco iOS 12.0 hasta la 12.4, 15.0 hasta la 15.6 e iOS XE 2.2 hasta la 3.17 contiene m\u00faltiples vulnerabilidades que pueden permitir una autenticaci\u00f3n a un atacante remoto para ejecutar c\u00f3digo remotamente en el sistema afectado o causar una recarga. Un atacante podr\u00eda explotar estas vulnerabilidades enviando un paquete SNMP manipulado al sistema afectado mediante IPv4 o IPv6. Solo el tr\u00e1fico directo al sistema afectado puede usarse para explotar estar vulnerabilidades. Esta vulnerabilidades son debidas a un buffer overflow en el subsistema SNMP del software afectado. Esta vulnerabilidad afecta a todas las versiones de SNMP: Versiones 1, 2c y 3. Para explotarlas en versiones 2c o anteriores, el atacante debe saber sobre la cadena comunitaria de solo lectura del SNMP del sistema afectado. Pra explotarlas en las versi\u00f3n 3, el atacante tiene que tener credenciales de usuario del sistema. Todos los dispositivos que tienen habilitado el SNMP y no tienen una exclusi\u00f3n explicita del MIB u OID afectado debe ser considerado vulnerable. Cisco Bug IDs: CSCve66658."
          }
        ],
        "id": "CVE-2017-6741",
        "lastModified": "2026-05-13T00:24:29.033",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 9.0,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 8.0,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
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          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "psirt@cisco.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
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          ]
        },
        "published": "2017-07-17T21:29:00.417",
        "references": [
          {
            "source": "psirt@cisco.com",
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/99345"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securitytracker.com/id/1038808"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
          }
        ],
        "sourceIdentifier": "psirt@cisco.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "source": "psirt@cisco.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "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.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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