FKIE_CVE-2019-9536

Vulnerability from fkie_nvd - Published: 2019-11-22 18:15 - Updated: 2026-06-17 02:43
Severity
6.1 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Apple iPhone 3GS bootrom malloc implementation returns a non-NULL pointer when unable to allocate memory, aka 'alloc8'. An attacker with physical access to the device can install arbitrary firmware.
References
cret@cert.orghttps://github.com/axi0mX/alloc8Exploit, Third Party Advisory
cret@cert.orghttps://github.com/axi0mX/ipwndfu/blob/master/alloc8.pyThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/axi0mX/alloc8Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/axi0mX/ipwndfu/blob/master/alloc8.pyThird Party Advisory
Impacted products
Vendor Product Version
apple iphone_3gs -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "iPhone",
          "vendor": "Apple",
          "versions": [
            {
              "status": "affected",
              "version": "3GS"
            }
          ]
        }
      ],
      "source": "cret@cert.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:apple:iphone_3gs:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9F47AA5E-7909-4F36-9B69-4977B4BB35F8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apple iPhone 3GS bootrom malloc implementation returns a non-NULL pointer when unable to allocate memory, aka \u0027alloc8\u0027. An attacker with physical access to the device can install arbitrary firmware."
    },
    {
      "lang": "es",
      "value": "La implementaci\u00f3n de bootrom malloc del Apple iPhone 3GS devuelve un puntero no NULL cuando no puede asignar la memoria, tambi\u00e9n se conoce como \"alloc8\". Un atacante con acceso f\u00edsico al dispositivo puede instalar un firmware arbitrario."
    }
  ],
  "id": "CVE-2019-9536",
  "lastModified": "2026-06-17T02:43:54.740",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.9,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.2,
        "source": "cret@cert.org",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-11-22T18:15:11.170",
  "references": [
    {
      "source": "cret@cert.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/axi0mX/alloc8"
    },
    {
      "source": "cret@cert.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/axi0mX/ipwndfu/blob/master/alloc8.py"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/axi0mX/alloc8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/axi0mX/ipwndfu/blob/master/alloc8.py"
    }
  ],
  "sourceIdentifier": "cret@cert.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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