gsd-2020-10737
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home's user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory's unprivileged user.
Aliases
Aliases
CVE-2020-10737


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-10737",
    "description": "A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home\u0027s user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory\u0027s unprivileged user.",
    "id": "GSD-2020-10737",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-10737.html",
      "https://access.redhat.com/errata/RHSA-2020:4687",
      "https://linux.oracle.com/cve/CVE-2020-10737.html",
      "https://ubuntu.com/security/CVE-2020-10737"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-10737"
      ],
      "details": "A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home\u0027s user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory\u0027s unprivileged user.",
      "id": "GSD-2020-10737",
      "modified": "2023-12-13T01:22:04.336654Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2020-10737",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "oddjob",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "before 0.34.5"
                        },
                        {
                          "version_value": "before 0.34.6"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Red Hat"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home\u0027s user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory\u0027s unprivileged user."
          }
        ]
      },
      "impact": {
        "cvss": [
          [
            {
              "vectorString": "6.3/CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.0"
            }
          ]
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-362"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10737",
            "refsource": "CONFIRM",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10737"
          },
          {
            "name": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch",
            "refsource": "CONFIRM",
            "url": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:redhat:oddjob:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.34.5",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-10737"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A race condition was found in the mkhomedir tool shipped with the oddjob package in versions before 0.34.5 and 0.34.6 wherein, during the home creation, mkhomedir copies the /etc/skel directory into the newly created home and changes its ownership to the home\u0027s user without properly checking the homedir path. This flaw allows an attacker to leverage this issue by creating a symlink point to a target folder, which then has its ownership transferred to the new home directory\u0027s unprivileged user."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-362"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10737",
              "refsource": "CONFIRM",
              "tags": [
                "Issue Tracking",
                "Vendor Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10737"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "HIGH",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 3.7,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:H/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 1.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 0.3,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-12-03T02:26Z",
      "publishedDate": "2020-05-27T01:15Z"
    }
  }
}


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