{
  "id": "CVE-2019-20172",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2019-12-31T03:15:10.467",
  "lastModified": "2022-12-08T18:55:41.790",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack."
    },
    {
      "lang": "es",
      "value": "El archivo Kernel/VM/MemoryManager.cpp en SerenityOS antes de 30-12-2019 no rechaza las llamadas al sistema con punteros en el espacio de direcciones virtuales solo del kernel, lo que permite a usuarios locales alcanzar privilegios sobrescribiendo una direcci\u00f3n de retorno que fue encontrada en la pila del kernel."
    }
  ],
  "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
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "accessVector": "LOCAL",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:serenityos:serenityos:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2019-12-30",
              "matchCriteriaId": "5EA34FF9-B6AD-4751-86A8-7D8ED9EC6DA0"
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  ],
  "references": [
    {
      "url": "https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9",
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    }
  ]
}