« Volver al listado

CVE-2021-1540

Estado: ModificadaAlta (7.2)—

Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-1540",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-1540",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-07T21:41:42.298517Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco ASR 5000 Series Software",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-04T17:15:09.917",
  "references": [
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr5k-autho-bypass-mJDF5S7n",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr5k-autho-bypass-mJDF5S7n",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory."
    },
    {
      "lang": "es",
      "value": "Múltiples vulnerabilidades en el proceso de autorización de Cisco ASR 5000 Series Software (StarOS), podría permitir a un atacante remoto autenticado omitir la autorización y ejecutar un subconjunto de comandos de CLI en un dispositivo afectado. Para obtener más información sobre estas vulnerabilidades, consulte la sección Detalles de este aviso"
    }
  ],
  "lastModified": "2026-06-17T03:32:00.817",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1B3FDA9A-CEB5-451B-AE92-4AE727D477FB",
              "versionEndExcluding": "21.16.9"
            },
            {
              "criteria": "cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "62DD8225-32A7-41B0-AD98-D087835FAC7E",
              "versionEndExcluding": "21.17.10",
              "versionStartIncluding": "21.17.0"
            },
            {
              "criteria": "cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C993F0DB-5AD2-4FF4-AF4D-7F99C9CF0396",
              "versionEndExcluding": "21.18.16",
              "versionStartIncluding": "21.18.0"
            },
            {
              "criteria": "cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "739F9C47-AEAC-41CC-B9BB-36EA43F081CB",
              "versionEndExcluding": "21.19.11",
              "versionStartIncluding": "21.19.0"
            },
            {
              "criteria": "cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2D823601-77FE-40A2-B281-D5E4547B28C0",
              "versionEndExcluding": "21.19.n7",
              "versionStartIncluding": "21.19.n"
            },
            {
              "criteria": "cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "27025ED8-2512-4F81-81F2-FD836D4CA68F",
              "versionEndExcluding": "21.20.8",
              "versionStartIncluding": "21.20.0"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "746254AC-B039-432C-AA5C-A82260E57AD7"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "301681DF-2A9E-4A91-9918-4A46153ADC01"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "A9EF0299-16A7-446D-855D-BFF91EE65534"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:virtualized_packet_core:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B88F195D-ECA6-414A-B8C0-6C8B47B595E6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}