GSD-2020-10737

Vulnerability from gsd - Updated: 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": {
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        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2020-10737",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "oddjob",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "before 0.34.5"
                        },
                        {
                          "version_value": "before 0.34.6"
                        }
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            "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": {
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            {
              "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"
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                "value": "CWE-362"
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            "refsource": "CONFIRM",
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          },
          {
            "name": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch",
            "refsource": "CONFIRM",
            "url": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch"
          }
        ]
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    },
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                "cpe_name": [],
                "versionEndExcluding": "0.34.5",
                "vulnerable": true
              }
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            "operator": "OR"
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        ]
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      "cve": {
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          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-10737"
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
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              "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": [
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              "name": "https://pagure.io/oddjob/c/10b8aaa1564b723a005b53acc069df71313f4cac?branch",
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            },
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              ],
              "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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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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