{
  "id": "CVE-2020-27797",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2022-08-25T20:15:08.537",
  "lastModified": "2022-08-27T03:11:50.543",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An invalid memory address reference was discovered in the elf_lookup function in p_lx_elf.cpp in UPX 4.0.0 via a crafted Mach-O file."
    },
    {
      "lang": "es",
      "value": "Se ha detectado una referencia a una direcci\u00f3n de memoria no v\u00e1lida en la funci\u00f3n elf_lookup en el archivo p_lx_elf.cpp en UPX versi\u00f3n 4.0.0, por medio de un archivo Mach-O dise\u00f1ado."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-763"
        }
      ]
    },
    {
      "source": "secalert@redhat.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:upx_project:upx:4.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "D3527302-7874-4400-B123-99C1CA6FE8EB"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/upx/upx/issues/390",
      "source": "secalert@redhat.com",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ]
    }
  ]
}