FKIE_CVE-2017-6738
Vulnerability from fkie_nvd - Published: 2017-07-17 21:29 - Updated: 2026-06-17 01:22
Severity
Summary
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software 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. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.
Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.
There are workarounds that address these vulnerabilities.
References
| URL | Tags | ||
|---|---|---|---|
| psirt@cisco.com | https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.securityfocus.com/bid/99345 | Broken Link, Third Party Advisory, VDB Entry | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.securitytracker.com/id/1038808 | Broken Link, Third Party Advisory, VDB Entry | |
| af854a3a-2127-422b-91ae-364da2661108 | https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp | Vendor Advisory | |
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6738 | US Government Resource |
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{
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"version": "15.2(1)SY2"
},
{
"status": "affected",
"version": "15.2(2)SY"
},
{
"status": "affected",
"version": "15.2(1)SY1a"
},
{
"status": "affected",
"version": "15.2(2)SY1"
},
{
"status": "affected",
"version": "15.2(2)SY2"
},
{
"status": "affected",
"version": "15.2(1)SY3"
},
{
"status": "affected",
"version": "15.2(1)SY4"
},
{
"status": "affected",
"version": "15.2(5)EX"
},
{
"status": "affected",
"version": "15.2(4)JAZ1"
},
{
"status": "affected",
"version": "15.0(2)EK"
},
{
"status": "affected",
"version": "15.0(2)EK1"
},
{
"status": "affected",
"version": "15.4(1)CG"
},
{
"status": "affected",
"version": "15.4(1)CG1"
},
{
"status": "affected",
"version": "15.4(2)CG"
},
{
"status": "affected",
"version": "15.2(2)EB"
},
{
"status": "affected",
"version": "15.2(2)EB1"
},
{
"status": "affected",
"version": "15.2(2)EB2"
},
{
"status": "affected",
"version": "15.5(1)T"
},
{
"status": "affected",
"version": "15.5(1)T1"
},
{
"status": "affected",
"version": "15.5(2)T"
},
{
"status": "affected",
"version": "15.5(1)T2"
},
{
"status": "affected",
"version": "15.5(1)T3"
},
{
"status": "affected",
"version": "15.5(2)T1"
},
{
"status": "affected",
"version": "15.5(2)T2"
},
{
"status": "affected",
"version": "15.5(2)T3"
},
{
"status": "affected",
"version": "15.5(2)T4"
},
{
"status": "affected",
"version": "15.5(1)T4"
},
{
"status": "affected",
"version": "15.2(2)EA"
},
{
"status": "affected",
"version": "15.2(2)EA1"
},
{
"status": "affected",
"version": "15.2(2)EA2"
},
{
"status": "affected",
"version": "15.2(3)EA"
},
{
"status": "affected",
"version": "15.2(4)EA"
},
{
"status": "affected",
"version": "15.2(4)EA1"
},
{
"status": "affected",
"version": "15.2(2)EA3"
},
{
"status": "affected",
"version": "15.2(4)EA3"
},
{
"status": "affected",
"version": "15.2(5)EA"
},
{
"status": "affected",
"version": "15.2(4)EA4"
},
{
"status": "affected",
"version": "15.2(4)EA5"
},
{
"status": "affected",
"version": "15.5(3)M"
},
{
"status": "affected",
"version": "15.5(3)M1"
},
{
"status": "affected",
"version": "15.5(3)M0a"
},
{
"status": "affected",
"version": "15.5(3)M2"
},
{
"status": "affected",
"version": "15.5(3)M3"
},
{
"status": "affected",
"version": "15.5(3)M4"
},
{
"status": "affected",
"version": "15.5(3)M4a"
},
{
"status": "affected",
"version": "15.5(3)M5"
},
{
"status": "affected",
"version": "15.3(3)JAA1"
},
{
"status": "affected",
"version": "15.0(2)SQD"
},
{
"status": "affected",
"version": "15.0(2)SQD1"
},
{
"status": "affected",
"version": "15.0(2)SQD2"
},
{
"status": "affected",
"version": "15.0(2)SQD3"
},
{
"status": "affected",
"version": "15.0(2)SQD4"
},
{
"status": "affected",
"version": "15.0(2)SQD5"
},
{
"status": "affected",
"version": "15.0(2)SQD6"
},
{
"status": "affected",
"version": "15.6(1)T"
},
{
"status": "affected",
"version": "15.6(2)T"
},
{
"status": "affected",
"version": "15.6(1)T0a"
},
{
"status": "affected",
"version": "15.6(1)T1"
},
{
"status": "affected",
"version": "15.6(2)T1"
},
{
"status": "affected",
"version": "15.6(1)T2"
},
{
"status": "affected",
"version": "15.6(2)T2"
},
{
"status": "affected",
"version": "15.6(1)T3"
},
{
"status": "affected",
"version": "15.3(1)SY"
},
{
"status": "affected",
"version": "15.3(1)SY1"
},
{
"status": "affected",
"version": "15.3(1)SY2"
},
{
"status": "affected",
"version": "15.6(3)M"
},
{
"status": "affected",
"version": "15.6(3)M1"
},
{
"status": "affected",
"version": "15.6(3)M0a"
},
{
"status": "affected",
"version": "15.6(3)M1b"
},
{
"status": "affected",
"version": "15.6(3)M2"
},
{
"status": "affected",
"version": "15.6(3)M2a"
},
{
"status": "affected",
"version": "15.2(4)EC1"
},
{
"status": "affected",
"version": "15.2(4)EC2"
},
{
"status": "affected",
"version": "15.3(3)JPC5"
},
{
"status": "affected",
"version": "15.4(1)SY"
},
{
"status": "affected",
"version": "15.4(1)SY1"
},
{
"status": "affected",
"version": "15.4(1)SY2"
},
{
"status": "affected",
"version": "15.5(1)SY"
},
{
"status": "affected",
"version": "15.3(3)JPR1"
}
]
},
{
"product": "Cisco IOS XE Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.2.0SG"
},
{
"status": "affected",
"version": "3.2.1SG"
},
{
"status": "affected",
"version": "3.2.2SG"
},
{
"status": "affected",
"version": "3.2.3SG"
},
{
"status": "affected",
"version": "3.2.4SG"
},
{
"status": "affected",
"version": "3.2.5SG"
},
{
"status": "affected",
"version": "3.2.6SG"
},
{
"status": "affected",
"version": "3.2.7SG"
},
{
"status": "affected",
"version": "3.2.8SG"
},
{
"status": "affected",
"version": "3.2.9SG"
},
{
"status": "affected",
"version": "3.2.10SG"
},
{
"status": "affected",
"version": "3.2.11SG"
},
{
"status": "affected",
"version": "3.3.0SG"
},
{
"status": "affected",
"version": "3.3.2SG"
},
{
"status": "affected",
"version": "3.3.1SG"
},
{
"status": "affected",
"version": "3.2.0SE"
},
{
"status": "affected",
"version": "3.2.1SE"
},
{
"status": "affected",
"version": "3.2.2SE"
},
{
"status": "affected",
"version": "3.2.3SE"
},
{
"status": "affected",
"version": "3.3.0SE"
},
{
"status": "affected",
"version": "3.3.1SE"
},
{
"status": "affected",
"version": "3.3.2SE"
},
{
"status": "affected",
"version": "3.3.3SE"
},
{
"status": "affected",
"version": "3.3.4SE"
},
{
"status": "affected",
"version": "3.3.5SE"
},
{
"status": "affected",
"version": "3.4.0SG"
},
{
"status": "affected",
"version": "3.4.2SG"
},
{
"status": "affected",
"version": "3.4.1SG"
},
{
"status": "affected",
"version": "3.4.3SG"
},
{
"status": "affected",
"version": "3.4.4SG"
},
{
"status": "affected",
"version": "3.4.5SG"
},
{
"status": "affected",
"version": "3.4.6SG"
},
{
"status": "affected",
"version": "3.4.7SG"
},
{
"status": "affected",
"version": "3.4.8SG"
},
{
"status": "affected",
"version": "3.5.0E"
},
{
"status": "affected",
"version": "3.5.1E"
},
{
"status": "affected",
"version": "3.5.2E"
},
{
"status": "affected",
"version": "3.5.3E"
},
{
"status": "affected",
"version": "3.6.0E"
},
{
"status": "affected",
"version": "3.6.1E"
},
{
"status": "affected",
"version": "3.6.2aE"
},
{
"status": "affected",
"version": "3.6.2E"
},
{
"status": "affected",
"version": "3.6.3E"
},
{
"status": "affected",
"version": "3.6.4E"
},
{
"status": "affected",
"version": "3.6.5E"
},
{
"status": "affected",
"version": "3.6.6E"
},
{
"status": "affected",
"version": "3.6.5aE"
},
{
"status": "affected",
"version": "3.6.5bE"
},
{
"status": "affected",
"version": "3.3.0SQ"
},
{
"status": "affected",
"version": "3.3.1SQ"
},
{
"status": "affected",
"version": "3.4.0SQ"
},
{
"status": "affected",
"version": "3.4.1SQ"
},
{
"status": "affected",
"version": "3.7.0E"
},
{
"status": "affected",
"version": "3.7.1E"
},
{
"status": "affected",
"version": "3.7.2E"
},
{
"status": "affected",
"version": "3.7.3E"
},
{
"status": "affected",
"version": "3.7.4E"
},
{
"status": "affected",
"version": "3.7.5E"
},
{
"status": "affected",
"version": "3.5.0SQ"
},
{
"status": "affected",
"version": "3.5.1SQ"
},
{
"status": "affected",
"version": "3.5.2SQ"
},
{
"status": "affected",
"version": "3.5.3SQ"
},
{
"status": "affected",
"version": "3.5.4SQ"
},
{
"status": "affected",
"version": "3.5.5SQ"
},
{
"status": "affected",
"version": "3.5.6SQ"
},
{
"status": "affected",
"version": "16.1.1"
},
{
"status": "affected",
"version": "16.1.2"
},
{
"status": "affected",
"version": "16.1.3"
},
{
"status": "affected",
"version": "16.2.1"
},
{
"status": "affected",
"version": "16.2.2"
},
{
"status": "affected",
"version": "3.8.0E"
},
{
"status": "affected",
"version": "3.8.1E"
},
{
"status": "affected",
"version": "3.8.2E"
},
{
"status": "affected",
"version": "3.8.3E"
},
{
"status": "affected",
"version": "3.8.4E"
},
{
"status": "affected",
"version": "16.3.1"
},
{
"status": "affected",
"version": "16.3.2"
},
{
"status": "affected",
"version": "16.3.3"
},
{
"status": "affected",
"version": "16.3.1a"
},
{
"status": "affected",
"version": "16.3.4"
},
{
"status": "affected",
"version": "16.4.1"
},
{
"status": "affected",
"version": "16.4.2"
},
{
"status": "affected",
"version": "16.5.1"
},
{
"status": "affected",
"version": "16.5.1a"
},
{
"status": "affected",
"version": "16.5.1b"
},
{
"status": "affected",
"version": "3.18.1aSP"
},
{
"status": "affected",
"version": "3.18.2aSP"
},
{
"status": "affected",
"version": "3.9.0E"
},
{
"status": "affected",
"version": "3.9.1E"
},
{
"status": "affected",
"version": "3.9.2E"
},
{
"status": "affected",
"version": "17.11.99SW"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"cisaActionDue": "2022-03-24",
"cisaExploitAdd": "2022-03-03",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
"matchCriteriaId": "63ACD7DB-DCFE-4CDB-A3F0-4E413E178315",
"versionEndIncluding": "12.4",
"versionStartIncluding": "12.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
"matchCriteriaId": "650EB42C-D85F-482B-972D-7DCAC210DC48",
"versionEndIncluding": "15.6",
"versionStartIncluding": "15.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0B36DE05-C663-4F15-B52C-921378DA4CD4",
"versionEndIncluding": "3.17.0",
"versionStartIncluding": "2.2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software 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.\r\n\r 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. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.\r\n\r Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.\r\n\r There are workarounds that address these vulnerabilities."
},
{
"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: CSCve89865, CSCsy56638."
}
],
"id": "CVE-2017-6738",
"lastModified": "2026-06-17T01:22:55.300",
"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
}
],
"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"
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2017-6738",
"options": [
{
"exploitation": "active"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-08T17:36:26.152413Z",
"version": "2.0.3"
}
}
]
},
"published": "2017-07-17T21:29:00.290",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
"Vendor Advisory"
],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/99345"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link",
"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"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6738"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
"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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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