gsd-2021-35938
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Aliases
Aliases
CVE-2021-35938


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-35938",
    "description": "A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
    "id": "GSD-2021-35938",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-35938.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-35938"
      ],
      "details": "A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
      "id": "GSD-2021-35938",
      "modified": "2023-12-13T01:23:28.019387Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2021-35938",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "RPM",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Fixed in rpm v4.18.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
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      },
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-59 - Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114"
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          {
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            "url": "https://access.redhat.com/security/cve/CVE-2021-35938"
          },
          {
            "name": "https://rpm.org/wiki/Releases/4.18.0",
            "refsource": "MISC",
            "url": "https://rpm.org/wiki/Releases/4.18.0"
          },
          {
            "name": "https://github.com/rpm-software-management/rpm/pull/1919",
            "refsource": "MISC",
            "url": "https://github.com/rpm-software-management/rpm/pull/1919"
          },
          {
            "name": "https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033",
            "refsource": "MISC",
            "url": "https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033"
          },
          {
            "name": "GLSA-202210-22",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202210-22"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "4.18.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2021-35938"
        },
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        "description": {
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            }
          ]
        },
        "problemtype": {
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            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-59"
                }
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            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114",
              "refsource": "MISC",
              "tags": [
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              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964114"
            },
            {
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              "url": "https://github.com/rpm-software-management/rpm/pull/1919"
            },
            {
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                "Third Party Advisory"
              ],
              "url": "https://bugzilla.suse.com/show_bug.cgi?id=1157880"
            },
            {
              "name": "https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033",
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              "url": "https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033"
            },
            {
              "name": "https://access.redhat.com/security/cve/CVE-2021-35938",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2021-35938"
            },
            {
              "name": "https://rpm.org/wiki/Releases/4.18.0",
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              "tags": [
                "Release Notes"
              ],
              "url": "https://rpm.org/wiki/Releases/4.18.0"
            },
            {
              "name": "GLSA-202210-22",
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                "Third Party Advisory"
              ],
              "url": "https://security.gentoo.org/glsa/202210-22"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 0.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-11-29T18:06Z",
      "publishedDate": "2022-08-25T20:15Z"
    }
  }
}


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