gsd-2021-34746
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.
Aliases
Aliases
CVE-2021-34746


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-34746",
    "description": "A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.",
    "id": "GSD-2021-34746"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-34746"
      ],
      "details": "A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.",
      "id": "GSD-2021-34746",
      "modified": "2023-12-13T01:23:14.585906Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "psirt@cisco.com",
        "DATE_PUBLIC": "2021-09-01T16:00:00",
        "ID": "CVE-2021-34746",
        "STATE": "PUBLIC",
        "TITLE": "Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Cisco Enterprise NFV Infrastructure Software ",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Cisco"
            }
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      },
      "data_format": "MITRE",
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      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device."
          }
        ]
      },
      "exploit": [
        {
          "lang": "eng",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is aware that proof-of-concept exploit code is available for the vulnerability described in this advisory. "
        }
      ],
      "impact": {
        "cvss": {
          "baseScore": "9.8",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H ",
          "version": "3.0"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-289"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "20210901 Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability",
            "refsource": "CISCO",
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nfvis-g2DMVVh"
          },
          {
            "name": "https://github.com/orangecertcc/security-research/security/advisories/GHSA-gqx8-c4xr-c664",
            "refsource": "MISC",
            "url": "https://github.com/orangecertcc/security-research/security/advisories/GHSA-gqx8-c4xr-c664"
          }
        ]
      },
      "source": {
        "advisory": "cisco-sa-nfvis-g2DMVVh",
        "defect": [
          [
            "CSCvz16015"
          ]
        ],
        "discovery": "INTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:cisco:enterprise_nfv_infrastructure_software:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.6.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "ID": "CVE-2021-34746"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-287"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20210901 Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability",
              "refsource": "CISCO",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nfvis-g2DMVVh"
            },
            {
              "name": "https://github.com/orangecertcc/security-research/security/advisories/GHSA-gqx8-c4xr-c664",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/orangecertcc/security-research/security/advisories/GHSA-gqx8-c4xr-c664"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 9.3,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-09-12T02:48Z",
      "publishedDate": "2021-09-02T03:15Z"
    }
  }
}


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