FKIE_CVE-2020-2050

Vulnerability from fkie_nvd - Published: 2020-11-12 00:15 - Updated: 2024-11-21 05:24
Severity ?
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Summary
An authentication bypass vulnerability exists in the GlobalProtect SSL VPN component of Palo Alto Networks PAN-OS software that allows an attacker to bypass all client certificate checks with an invalid certificate. A remote attacker can successfully authenticate as any user and gain access to restricted VPN network resources when the gateway or portal is configured to rely entirely on certificate-based authentication. Impacted features that use SSL VPN with client certificate verification are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN In configurations where client certificate verification is used in conjunction with other authentication methods, the protections added by the certificate check are ignored as a result of this issue. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.17; PAN-OS 9.0 versions earlier than PAN-OS 9.0.11; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1.
References
psirt@paloaltonetworks.comhttps://security.paloaltonetworks.com/CVE-2020-2050Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.paloaltonetworks.com/CVE-2020-2050Vendor Advisory
Impacted products
Vendor Product Version
paloaltonetworks pan-os *
paloaltonetworks pan-os *
paloaltonetworks pan-os *
paloaltonetworks pan-os *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6A42777F-938A-45FB-BCD3-9F1BEDF7DB02",
              "versionEndExcluding": "8.1.17",
              "versionStartIncluding": "8.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5CE2A954-DB66-48F8-96D7-86846D1FE5D8",
              "versionEndExcluding": "9.0.11",
              "versionStartIncluding": "9.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "872E6056-5BE6-4FE8-BE33-F98CF0DBC67C",
              "versionEndExcluding": "9.1.5",
              "versionStartIncluding": "9.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "09926771-7377-487B-B660-809265E7D8A2",
              "versionEndExcluding": "10.0.1",
              "versionStartIncluding": "10.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication bypass vulnerability exists in the GlobalProtect SSL VPN component of Palo Alto Networks PAN-OS software that allows an attacker to bypass all client certificate checks with an invalid certificate. A remote attacker can successfully authenticate as any user and gain access to restricted VPN network resources when the gateway or portal is configured to rely entirely on certificate-based authentication. Impacted features that use SSL VPN with client certificate verification are: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN In configurations where client certificate verification is used in conjunction with other authentication methods, the protections added by the certificate check are ignored as a result of this issue. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.17; PAN-OS 9.0 versions earlier than PAN-OS 9.0.11; PAN-OS 9.1 versions earlier than PAN-OS 9.1.5; PAN-OS 10.0 versions earlier than PAN-OS 10.0.1."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n en el componente GlobalProtect SSL VPN del software PAN-OS de Palo Alto Networks, que permite a un atacante omitir todas las comprobaciones de certificados de clientes con un certificado no v\u00e1lido.\u0026#xa0;Un atacante remoto puede autenticarse con \u00e9xito como cualquier usuario y conseguir acceso a los recursos de red VPN restringidos cuando la puerta de enlace o el portal est\u00e1n configurados para depender completamente de la autenticaci\u00f3n basada en certificados.\u0026#xa0;Las caracter\u00edsticas afectadas que usan SSL VPN con verificaci\u00f3n de certificado de cliente son: GlobalProtect Gateway, GlobalProtect Portal, GlobalProtect Clientless VPN. En configuraciones donde la verificaci\u00f3n de certificado de cliente es usada en conjunto con otros m\u00e9todos de autenticaci\u00f3n, las protecciones agregadas por la verificaci\u00f3n de certificado son ignoradas como resultado de este problema.\u0026#xa0;Este problema afecta: versiones PAN-OS 8.1 anteriores a PAN-OS 8.1.17;\u0026#xa0;versiones PAN-OS 9.0 anteriores a PAN-OS 9.0.11;\u0026#xa0;versiones PAN-OS 9.1 anteriores a PAN-OS 9.1.5;\u0026#xa0;versiones PAN-OS 10.0 anteriores a PAN-OS 10.0.1"
    }
  ],
  "id": "CVE-2020-2050",
  "lastModified": "2024-11-21T05:24:33.270",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "psirt@paloaltonetworks.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-11-12T00:15:10.677",
  "references": [
    {
      "source": "psirt@paloaltonetworks.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.paloaltonetworks.com/CVE-2020-2050"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.paloaltonetworks.com/CVE-2020-2050"
    }
  ],
  "sourceIdentifier": "psirt@paloaltonetworks.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ],
      "source": "psirt@paloaltonetworks.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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