GSD-2021-24031

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
In the Zstandard command-line utility prior to v1.4.1, output files were created with default permissions. Correct file permissions (matching the input) would only be set at completion time. Output files could therefore be readable or writable to unintended parties.
Aliases
Aliases
CVE-2021-24031
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{
  "GSD": {
    "alias": "CVE-2021-24031",
    "description": "In the Zstandard command-line utility prior to v1.4.1, output files were created with default permissions. Correct file permissions (matching the input) would only be set at completion time. Output files could therefore be readable or writable to unintended parties.",
    "id": "GSD-2021-24031",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-24031.html",
      "https://ubuntu.com/security/CVE-2021-24031",
      "https://advisories.mageia.org/CVE-2021-24031.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-24031"
      ],
      "details": "In the Zstandard command-line utility prior to v1.4.1, output files were created with default permissions. Correct file permissions (matching the input) would only be set at completion time. Output files could therefore be readable or writable to unintended parties.",
      "id": "GSD-2021-24031",
      "modified": "2023-12-13T01:23:37.566183Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve-assign@fb.com",
        "DATE_ASSIGNED": "2021-03-01",
        "ID": "CVE-2021-24031",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Zstandard",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "!\u003e=",
                          "version_value": "1.4.1"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_value": "1.4.1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Facebook"
            }
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Insecure Inherited Permissions (CWE-277)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/facebook/zstd/issues/1630",
            "refsource": "MISC",
            "url": "https://github.com/facebook/zstd/issues/1630"
          },
          {
            "name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=981404",
            "refsource": "MISC",
            "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=981404"
          },
          {
            "name": "https://www.facebook.com/security/advisories/cve-2021-24031",
            "refsource": "MISC",
            "url": "https://www.facebook.com/security/advisories/cve-2021-24031"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:facebook:zstandard:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.4.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
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          "ID": "CVE-2021-24031"
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        "description": {
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              "value": "In the Zstandard command-line utility prior to v1.4.1, output files were created with default permissions. Correct file permissions (matching the input) would only be set at completion time. Output files could therefore be readable or writable to unintended parties."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-276"
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          "reference_data": [
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            },
            {
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              "tags": [
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              ],
              "url": "https://github.com/facebook/zstd/issues/1630"
            },
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                "Third Party Advisory"
              ],
              "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=981404"
            }
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 2.1,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-04-14T15:28Z",
      "publishedDate": "2021-03-04T21:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.