{
  "id": "CVE-2023-27516",
  "sourceIdentifier": "talos-cna@cisco.com",
  "published": "2023-10-12T16:15:11.670",
  "lastModified": "2023-10-18T16:35:39.283",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n en la funcionalidad CiRpcAccepted() de SoftEther VPN 4.41-9782-beta y 5.01.9674. Un paquete de red especialmente manipulado puede provocar un acceso no autorizado. Un atacante puede enviar una solicitud de red para desencadenar esta vulnerabilidad."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      },
      {
        "source": "talos-cna@cisco.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 4.7
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1188"
        }
      ]
    },
    {
      "source": "talos-cna@cisco.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-453"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:softether:vpn:4.41-9782:beta:*:*:*:*:*:*",
              "matchCriteriaId": "79C47EE5-1B55-4FDD-A5B5-E10FF3337100"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:softether:vpn:5.01.9674:*:*:*:*:*:*:*",
              "matchCriteriaId": "5CF5CF13-B22F-494B-BDC0-B59371979251"
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          ]
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  ],
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1754",
      "source": "talos-cna@cisco.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.softether.org/9-about/News/904-SEVPN202301",
      "source": "talos-cna@cisco.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    }
  ]
}