Vulnerability-Lookup

FKIE_CVE-2016-6393

Vulnerability from fkie_nvd - Published: 2016-10-05 20:59 - Updated: 2026-06-17 00:50

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

The AAA service in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.1 through 3.18 and 16.2 allows remote attackers to cause a denial of service (device reload) via a failed SSH connection attempt that is mishandled during generation of an error-log message, aka Bug ID CSCuy87667.

References

URL	Tags
psirt@cisco.com	http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados	Vendor Advisory
psirt@cisco.com	http://www.securityfocus.com/bid/93196	Third Party Advisory, VDB Entry
psirt@cisco.com	http://www.securitytracker.com/id/1036914	Third Party Advisory, VDB Entry
psirt@cisco.com	https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04	Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108	http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.securityfocus.com/bid/93196	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	http://www.securitytracker.com/id/1036914	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04	Third Party Advisory, US Government Resource

Impacted products

Vendor	Product	Version
cisco	ios	*
cisco	ios	*
cisco	ios_xe	*
cisco	ios_xe	16.2

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "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": "2AF93C18-D967-46CF-905E-73C68A722439",
              "versionEndIncluding": "3.18.0",
              "versionStartIncluding": "2.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios_xe:16.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "47C86D01-6B26-4BAB-8B61-598823230DC7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The AAA service in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.1 through 3.18 and 16.2 allows remote attackers to cause a denial of service (device reload) via a failed SSH connection attempt that is mishandled during generation of an error-log message, aka Bug ID CSCuy87667."
    },
    {
      "lang": "es",
      "value": "El servicio AAA en Cisco IOS 12.0 hasta la versi\u00f3n 12.4 y 15.0 hasta la versi\u00f3n 15.6 e IOS XE 2.1 hasta la versi\u00f3n 3.18 y 16.2 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (recarga del dispositivo) a trav\u00e9s de un intento de conexi\u00f3n SSH fallido que no es manejado correctamente durante la generaci\u00f3n de un mensaje de registro de error, vulnerabilidad tambi\u00e9n conocida como Bug ID CSCuy87667."
    }
  ],
  "id": "CVE-2016-6393",
  "lastModified": "2026-06-17T00:50:57.270",
  "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
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-10-05T20:59:07.853",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/93196"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securitytracker.com/id/1036914"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/93196"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securitytracker.com/id/1036914"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "US Government Resource"
      ],
      "url": "https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2016-6393 (GCVE-0-2016-6393)

Vulnerability from cvelistv5 – Published: 2016-10-05 20:00 – Updated: 2024-08-06 01:29

Summary

Severity

No CVSS data available.

CWE

Assigner

cisco mitre root Scorecard

References

4 references

URL	Tags
http://www.securityfocus.com/bid/93196	vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1036914	vdb-entryx_refsource_SECTRACK
http://tools.cisco.com/security/center/content/Ci…	vendor-advisoryx_refsource_CISCO
https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04	x_refsource_MISC

Date Public

2016-09-28 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T01:29:19.540Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "93196",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/93196"
          },
          {
            "name": "1036914",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1036914"
          },
          {
            "name": "20160928 Cisco IOS and IOS XE Software AAA Login Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2016-09-28T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The AAA service in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.1 through 3.18 and 16.2 allows remote attackers to cause a denial of service (device reload) via a failed SSH connection attempt that is mishandled during generation of an error-log message, aka Bug ID CSCuy87667."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-07-29T09:57:01.000Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "93196",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/93196"
        },
        {
          "name": "1036914",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1036914"
        },
        {
          "name": "20160928 Cisco IOS and IOS XE Software AAA Login Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "ID": "CVE-2016-6393",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                "vendor_name": "n/a"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "value": "The AAA service in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.1 through 3.18 and 16.2 allows remote attackers to cause a denial of service (device reload) via a failed SSH connection attempt that is mishandled during generation of an error-log message, aka Bug ID CSCuy87667."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
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                  "lang": "eng",
                  "value": "n/a"
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        },
        "references": {
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              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/93196"
            },
            {
              "name": "1036914",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1036914"
            },
            {
              "name": "20160928 Cisco IOS and IOS XE Software AAA Login Denial of Service Vulnerability",
              "refsource": "CISCO",
              "url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaados"
            },
            {
              "name": "https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04",
              "refsource": "MISC",
              "url": "https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04"
            }
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    "datePublished": "2016-10-05T20:00:00.000Z",
    "dateReserved": "2016-07-26T00:00:00.000Z",
    "dateUpdated": "2024-08-06T01:29:19.540Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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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FKIE_CVE-2016-6393

CVE-2016-6393 (GCVE-0-2016-6393)

Tags

Sightings

Nomenclature

Related by attack behaviour