gsd-2018-15687
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.
Aliases
Aliases
CVE-2018-15687


To clipboard 

{
  "GSD": {
    "alias": "CVE-2018-15687",
    "description": "A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.",
    "id": "GSD-2018-15687",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-15687.html",
      "https://ubuntu.com/security/CVE-2018-15687",
      "https://security.archlinux.org/CVE-2018-15687",
      "https://packetstormsecurity.com/files/cve/CVE-2018-15687"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-15687"
      ],
      "details": "A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239.",
      "id": "GSD-2018-15687",
      "modified": "2023-12-13T01:22:23.568215Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@ubuntu.com",
        "DATE_PUBLIC": "2018-10-25T00:00:00.000Z",
        "ID": "CVE-2018-15687",
        "STATE": "PUBLIC",
        "TITLE": "systemd: chown_one() can dereference symlinks"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "systemd",
                    "version": {
                      "version_data": [
                        {
                          "affected": "\u003c=",
                          "version_value": "239"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "systemd"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Jann Horn"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "There is a race condition between a stat(2) call and the fchmodat(2) call."
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "GLSA-201810-10",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/201810-10"
          },
          {
            "name": "https://github.com/systemd/systemd/pull/10517/commits",
            "refsource": "MISC",
            "url": "https://github.com/systemd/systemd/pull/10517/commits"
          },
          {
            "name": "105748",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/105748"
          },
          {
            "name": "USN-3816-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3816-1/"
          },
          {
            "name": "45715",
            "refsource": "EXPLOIT-DB",
            "url": "https://www.exploit-db.com/exploits/45715/"
          }
        ]
      },
      "source": {
        "defect": [
          "https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1796692"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "240",
                "versionStartIncluding": "235",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@ubuntu.com",
          "ID": "CVE-2018-15687"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A race condition in chown_one() of systemd allows an attacker to cause systemd to set arbitrary permissions on arbitrary files. Affected releases are systemd versions up to and including 239."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-362"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/systemd/systemd/pull/10517/commits",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/systemd/systemd/pull/10517/commits"
            },
            {
              "name": "105748",
              "refsource": "BID",
              "tags": [
                "Broken Link",
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securityfocus.com/bid/105748"
            },
            {
              "name": "45715",
              "refsource": "EXPLOIT-DB",
              "tags": [
                "Exploit",
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "https://www.exploit-db.com/exploits/45715/"
            },
            {
              "name": "GLSA-201810-10",
              "refsource": "GENTOO",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.gentoo.org/glsa/201810-10"
            },
            {
              "name": "USN-3816-1",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/3816-1/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.0,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2023-04-20T18:38Z",
      "publishedDate": "2018-10-26T14:29Z"
    }
  }
}


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