gsd-2017-5551
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.
Aliases
Aliases
CVE-2017-5551


To clipboard 

{
  "GSD": {
    "alias": "CVE-2017-5551",
    "description": "The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.",
    "id": "GSD-2017-5551",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-5551.html",
      "https://www.debian.org/security/2017/dsa-3791",
      "https://access.redhat.com/errata/RHSA-2017:2669",
      "https://access.redhat.com/errata/RHSA-2017:2077",
      "https://access.redhat.com/errata/RHSA-2017:1842",
      "https://access.redhat.com/errata/RHSA-2017:0817",
      "https://ubuntu.com/security/CVE-2017-5551",
      "https://advisories.mageia.org/CVE-2017-5551.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2017-5551.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-5551"
      ],
      "details": "The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.",
      "id": "GSD-2017-5551",
      "modified": "2023-12-13T01:21:13.238567Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2017-5551",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
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          }
        ]
      },
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                "value": "n/a"
              }
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      },
      "references": {
        "reference_data": [
          {
            "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31",
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            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31"
          },
          {
            "name": "[oss-security] 20170120 Re: CVE REQUEST: linux kernel: process with pgid zero able to crash kernel",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2017/01/21/3"
          },
          {
            "name": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6",
            "refsource": "CONFIRM",
            "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6"
          },
          {
            "name": "95717",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/95717"
          },
          {
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            "refsource": "CONFIRM",
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          },
          {
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            "url": "https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31"
          },
          {
            "name": "DSA-3791",
            "refsource": "DEBIAN",
            "url": "http://www.debian.org/security/2017/dsa-3791"
          },
          {
            "name": "1038053",
            "refsource": "SECTRACK",
            "url": "http://www.securitytracker.com/id/1038053"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.9.5",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2017-5551"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
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              "value": "The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "NVD-CWE-noinfo"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31",
              "refsource": "CONFIRM",
              "tags": [
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              "url": "https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1416126",
              "refsource": "CONFIRM",
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              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1416126"
            },
            {
              "name": "[oss-security] 20170120 Re: CVE REQUEST: linux kernel: process with pgid zero able to crash kernel",
              "refsource": "MLIST",
              "tags": [
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                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2017/01/21/3"
            },
            {
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              "refsource": "CONFIRM",
              "tags": [
                "Release Notes",
                "Vendor Advisory"
              ],
              "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6"
            },
            {
              "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31",
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            },
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            },
            {
              "name": "1038053",
              "refsource": "SECTRACK",
              "tags": [],
              "url": "http://www.securitytracker.com/id/1038053"
            },
            {
              "name": "DSA-3791",
              "refsource": "DEBIAN",
              "tags": [],
              "url": "http://www.debian.org/security/2017/dsa-3791"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 3.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.0"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2019-10-03T00:03Z",
      "publishedDate": "2017-02-06T06:59Z"
    }
  }
}


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