gsd-2021-20197
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.
Aliases
Aliases
CVE-2021-20197


To clipboard 

{
   GSD: {
      alias: "CVE-2021-20197",
      description: "There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.",
      id: "GSD-2021-20197",
      references: [
         "https://www.suse.com/security/cve/CVE-2021-20197.html",
         "https://access.redhat.com/errata/RHSA-2021:4364",
         "https://advisories.mageia.org/CVE-2021-20197.html",
         "https://security.archlinux.org/CVE-2021-20197",
         "https://linux.oracle.com/cve/CVE-2021-20197.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-20197",
         ],
         details: "There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.",
         id: "GSD-2021-20197",
         modified: "2023-12-13T01:23:12.280528Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "secalert@redhat.com",
            ID: "CVE-2021-20197",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "binutils",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "=",
                                       version_value: "binutils 2.35",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "n/a",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        cweId: "CWE-59",
                        lang: "eng",
                        value: "CWE-59",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://bugzilla.redhat.com/show_bug.cgi?id=1913743",
                  refsource: "MISC",
                  url: "https://bugzilla.redhat.com/show_bug.cgi?id=1913743",
               },
               {
                  name: "https://sourceware.org/bugzilla/show_bug.cgi?id=26945",
                  refsource: "MISC",
                  url: "https://sourceware.org/bugzilla/show_bug.cgi?id=26945",
               },
               {
                  name: "https://security.gentoo.org/glsa/202208-30",
                  refsource: "MISC",
                  url: "https://security.gentoo.org/glsa/202208-30",
               },
               {
                  name: "https://security.netapp.com/advisory/ntap-20210528-0009/",
                  refsource: "MISC",
                  url: "https://security.netapp.com/advisory/ntap-20210528-0009/",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndIncluding: "2.35",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:netapp:solidfire_\\&_hci_management_node:-:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "secalert@redhat.com",
               ID: "CVE-2021-20197",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-59",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://bugzilla.redhat.com/show_bug.cgi?id=1913743",
                     refsource: "MISC",
                     tags: [
                        "Issue Tracking",
                        "Patch",
                        "Third Party Advisory",
                     ],
                     url: "https://bugzilla.redhat.com/show_bug.cgi?id=1913743",
                  },
                  {
                     name: "https://sourceware.org/bugzilla/show_bug.cgi?id=26945",
                     refsource: "MISC",
                     tags: [
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                        "Patch",
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                     ],
                     url: "https://sourceware.org/bugzilla/show_bug.cgi?id=26945",
                  },
                  {
                     name: "https://security.netapp.com/advisory/ntap-20210528-0009/",
                     refsource: "CONFIRM",
                     tags: [
                        "Third Party Advisory",
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                     url: "https://security.netapp.com/advisory/ntap-20210528-0009/",
                  },
                  {
                     name: "GLSA-202208-30",
                     refsource: "GENTOO",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://security.gentoo.org/glsa/202208-30",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "MEDIUM",
                  accessVector: "LOCAL",
                  authentication: "NONE",
                  availabilityImpact: "NONE",
                  baseScore: 3.3,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "PARTIAL",
                  vectorString: "AV:L/AC:M/Au:N/C:P/I:P/A:N",
                  version: "2.0",
               },
               exploitabilityScore: 3.4,
               impactScore: 4.9,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "LOW",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "HIGH",
                  attackVector: "LOCAL",
                  availabilityImpact: "NONE",
                  baseScore: 6.3,
                  baseSeverity: "MEDIUM",
                  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:N",
                  version: "3.1",
               },
               exploitabilityScore: 1,
               impactScore: 5.2,
            },
         },
         lastModifiedDate: "2023-02-12T22:15Z",
         publishedDate: "2021-03-26T17:15Z",
      },
   },
}


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