fkie_cve-2017-5669
Vulnerability from fkie_nvd
Published
2017-02-24 15:59
Modified
2025-04-20 01:37
Summary
The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.
References
cve@mitre.orghttp://www.debian.org/security/2017/dsa-3804Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/96754Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1037918Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugzilla.kernel.org/show_bug.cgi?id=192931Issue Tracking, Patch, Vendor Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8Patch, Third Party Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7Patch, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3583-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3583-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2017/dsa-3804Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/96754Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037918Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.kernel.org/show_bug.cgi?id=192931Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3583-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3583-2/Third Party Advisory
Impacted products



{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "68E74529-58C5-4D73-8176-DDDF25C71F22",
              "versionEndExcluding": "4.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
              "matchCriteriaId": "8D305F7A-D159-4716-AB26-5E38BB5CD991",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
              "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n do_shmat en ipc/shm.c en el kernel de Linux hasta la versi\u00f3n 4.9.12 no restringe la direcci\u00f3n calculada por cierta operaci\u00f3n de redondeo, lo que permite a usuarios locales asignar la p\u00e1gina cero, y como consecuencia, eludir un mecanismo de protecci\u00f3n que existe por la llamada de sistema mmap, haciendo llamadas a sistema shmget y shmat manipuladas en un contexto privilegiado."
    }
  ],
  "id": "CVE-2017-5669",
  "lastModified": "2025-04-20T01:37:25.860",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-02-24T15:59:00.150",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.debian.org/security/2017/dsa-3804"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/96754"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "http://www.securitytracker.com/id/1037918"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Patch",
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      ],
      "url": "https://bugzilla.kernel.org/show_bug.cgi?id=192931"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://usn.ubuntu.com/3583-1/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/3583-2/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      ],
      "url": "http://www.debian.org/security/2017/dsa-3804"
    },
    {
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      "tags": [
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      ],
      "url": "http://www.securityfocus.com/bid/96754"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "VDB Entry"
      ],
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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    },
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      ],
      "url": "https://usn.ubuntu.com/3583-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/3583-2/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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