Vulnerability-Lookup

OESA-2021-1094 (CVE-2021-24032)

Vulnerability from osv_openeuler – Published: 2021-03-26 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

zstd security update

Details

Zstd is a fast lossless compression algorithm. It's backed by a very fast entropy stage, provided by Huff0 and FSE library. It's a real-time compression scenario for zlib levels and has a better compression ratio.

Security Fix(es):

Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.(CVE-2021-24032)

Severity

9.1 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-24032	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "zstd-1.4.5-1.oe1.aarch64.rpm",
          "zstd-debuginfo-1.4.5-1.oe1.aarch64.rpm",
          "zstd-debugsource-1.4.5-1.oe1.aarch64.rpm",
          "zstd-devel-1.4.5-1.oe1.aarch64.rpm",
          "zstd-debugsource-1.4.5-1.oe1.aarch64.rpm",
          "zstd-debuginfo-1.4.5-1.oe1.aarch64.rpm",
          "zstd-1.4.5-1.oe1.aarch64.rpm",
          "zstd-devel-1.4.5-1.oe1.aarch64.rpm"
        ],
        "noarch": [
          "zstd-help-1.4.5-1.oe1.noarch.rpm",
          "zstd-help-1.4.5-1.oe1.noarch.rpm"
        ],
        "src": [
          "zstd-1.4.5-1.oe1.src.rpm",
          "zstd-1.4.5-1.oe1.src.rpm"
        ],
        "x86_64": [
          "zstd-debugsource-1.4.5-1.oe1.x86_64.rpm",
          "zstd-devel-1.4.5-1.oe1.x86_64.rpm",
          "zstd-1.4.5-1.oe1.x86_64.rpm",
          "zstd-debuginfo-1.4.5-1.oe1.x86_64.rpm",
          "zstd-debuginfo-1.4.5-1.oe1.x86_64.rpm",
          "zstd-1.4.5-1.oe1.x86_64.rpm",
          "zstd-debugsource-1.4.5-1.oe1.x86_64.rpm",
          "zstd-devel-1.4.5-1.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS",
        "name": "zstd",
        "purl": "pkg:rpm/openEuler/zstd\u0026distro=openEuler-20.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.5-1.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "zstd-debugsource-1.4.5-1.oe1.aarch64.rpm",
          "zstd-debuginfo-1.4.5-1.oe1.aarch64.rpm",
          "zstd-1.4.5-1.oe1.aarch64.rpm",
          "zstd-devel-1.4.5-1.oe1.aarch64.rpm"
        ],
        "noarch": [
          "zstd-help-1.4.5-1.oe1.noarch.rpm"
        ],
        "src": [
          "zstd-1.4.5-1.oe1.src.rpm"
        ],
        "x86_64": [
          "zstd-debuginfo-1.4.5-1.oe1.x86_64.rpm",
          "zstd-1.4.5-1.oe1.x86_64.rpm",
          "zstd-debugsource-1.4.5-1.oe1.x86_64.rpm",
          "zstd-devel-1.4.5-1.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "zstd",
        "purl": "pkg:rpm/openEuler/zstd\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.5-1.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "Zstd is a fast lossless compression algorithm. It\u0027s backed by a very fast entropy stage, provided by Huff0 and FSE library. It\u0027s a real-time compression scenario for zlib levels and has a better compression ratio.\r\n\r\nSecurity Fix(es):\r\n\r\nBeginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.(CVE-2021-24032)",
  "id": "OESA-2021-1094",
  "modified": "2026-08-06T11:04:19Z",
  "published": "2021-03-26T11:04:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1094"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-24032"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "zstd security update",
  "upstream": [
    "CVE-2021-24032"
  ]
}

CVE-2021-24032 (GCVE-0-2021-24032)

Vulnerability from cvelistv5 – Published: 2021-03-04 20:15 – Updated: 2024-08-03 19:21

Summary

Severity

No CVSS data available.

CWE

CWE-277 - Insecure Inherited Permissions (CWE-277)

Assigner

facebook

References

3 references

URL	Tags
https://github.com/facebook/zstd/issues/2491	x_refsource_MISC
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug…	x_refsource_MISC
https://www.facebook.com/security/advisories/cve-…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Facebook	Zstandard	Unaffected: 1.4.9 , < unspecified (custom) Affected: 1.4.1 , < unspecified (custom) Unaffected: unspecified , < 1.4.1 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:21:17.115Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/facebook/zstd/issues/2491"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.facebook.com/security/advisories/cve-2021-24032"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Zstandard",
          "vendor": "Facebook",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "unaffected",
              "version": "1.4.9",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "1.4.1",
              "versionType": "custom"
            },
            {
              "lessThan": "1.4.1",
              "status": "unaffected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "dateAssigned": "2021-03-01T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-277",
              "description": "Insecure Inherited Permissions (CWE-277)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-04T20:15:21.000Z",
        "orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827",
        "shortName": "facebook"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/facebook/zstd/issues/2491"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.facebook.com/security/advisories/cve-2021-24032"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve-assign@fb.com",
          "DATE_ASSIGNED": "2021-03-01",
          "ID": "CVE-2021-24032",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Zstandard",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "!\u003e=",
                            "version_value": "1.4.9"
                          },
                          {
                            "version_affected": "\u003e=",
                            "version_value": "1.4.1"
                          },
                          {
                            "version_affected": "!\u003c",
                            "version_value": "1.4.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Facebook"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
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        "description": {
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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/2491",
              "refsource": "MISC",
              "url": "https://github.com/facebook/zstd/issues/2491"
            },
            {
              "name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519",
              "refsource": "MISC",
              "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982519"
            },
            {
              "name": "https://www.facebook.com/security/advisories/cve-2021-24032",
              "refsource": "MISC",
              "url": "https://www.facebook.com/security/advisories/cve-2021-24032"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827",
    "assignerShortName": "facebook",
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    "dateReserved": "2021-01-13T00:00:00.000Z",
    "dateUpdated": "2024-08-03T19:21:17.115Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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OESA-2021-1094 (CVE-2021-24032)

CVE-2021-24032 (GCVE-0-2021-24032)

Tags

Sightings

Nomenclature

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