Vulnerability-Lookup

CNVD-2021-36023

Vulnerability from cnvd - Published: 2021-05-20

Title

FreeBSD竞争条件问题漏洞（CNVD-2021-36023）

Description

FreeBSD是Freebsd基金会的一套类Unix操作系统。 FreeBSD存在竞争条件问题漏洞，攻击者可利用该漏洞访问文件系统层次结构。

Severity

中

Patch Name

FreeBSD竞争条件问题漏洞（CNVD-2021-36023）的补丁

Patch Description

FreeBSD是Freebsd基金会的一套类Unix操作系统。 FreeBSD存在竞争条件问题漏洞，攻击者可利用该漏洞访问文件系统层次结构。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.freebsd.org/security/advisories/FreeBSD-SA-21:10.jail_mount.asc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-25584

Impacted products

Name
['FreeBSD Freebsd 13.0-STABLE，<n245118', 'FreeBSD Freebsd 12.2-STABLE，<r369552', 'FreeBSD Freebsd 12.4-STABLE，<r369560', 'FreeBSD Freebsd 13.0-RC5，<p1', 'FreeBSD Freebsd 12.2-RELEASE，<p6', 'FreeBSD Freebsd 11.4-RELEASE，<p9']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25584"
    }
  },
  "description": "FreeBSD\u662fFreebsd\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nFreeBSD\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u6587\u4ef6\u7cfb\u7edf\u5c42\u6b21\u7ed3\u6784\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.freebsd.org/security/advisories/FreeBSD-SA-21:10.jail_mount.asc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-36023",
  "openTime": "2021-05-20",
  "patchDescription": "FreeBSD\u662fFreebsd\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nFreeBSD\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u6587\u4ef6\u7cfb\u7edf\u5c42\u6b21\u7ed3\u6784\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "FreeBSD\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-36023\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "FreeBSD Freebsd 13.0-STABLE\uff0c\u003cn245118",
      "FreeBSD Freebsd 12.2-STABLE\uff0c\u003cr369552",
      "FreeBSD Freebsd 12.4-STABLE\uff0c\u003cr369560",
      "FreeBSD Freebsd 13.0-RC5\uff0c\u003cp1",
      "FreeBSD Freebsd 12.2-RELEASE\uff0c\u003cp6",
      "FreeBSD Freebsd 11.4-RELEASE\uff0c\u003cp9"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-25584",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-12",
  "title": "FreeBSD\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-36023\uff09"
}

CVE-2020-25584 (GCVE-0-2020-25584)

Vulnerability from cvelistv5 – Published: 2021-04-07 14:43 – Updated: 2024-08-04 15:33

Summary

In FreeBSD 13.0-STABLE before n245118, 12.2-STABLE before r369552, 11.4-STABLE before r369560, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, a superuser inside a FreeBSD jail configured with the non-default allow.mount permission could cause a race condition between the lookup of ".." and remounting a filesystem, allowing access to filesystem hierarchy outside of the jail.

Severity

No CVSS data available.

CWE

Time-of-check Time-of-use Race Condition

Assigner

freebsd mitre root Scorecard

References

2 references

URL	Tags
https://security.FreeBSD.org/advisories/FreeBSD-S…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021042…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
n/a	FreeBSD	Affected: FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:33:05.696Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210423-0009/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeBSD",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In FreeBSD 13.0-STABLE before n245118, 12.2-STABLE before r369552, 11.4-STABLE before r369560, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, a superuser inside a FreeBSD jail configured with the non-default allow.mount permission could cause a race condition between the lookup of \"..\" and remounting a filesystem, allowing access to filesystem hierarchy outside of the jail."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Time-of-check Time-of-use Race Condition",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-23T05:06:26.000Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210423-0009/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secteam@freebsd.org",
          "ID": "CVE-2020-25584",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "FreeBSD",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In FreeBSD 13.0-STABLE before n245118, 12.2-STABLE before r369552, 11.4-STABLE before r369560, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, a superuser inside a FreeBSD jail configured with the non-default allow.mount permission could cause a race condition between the lookup of \"..\" and remounting a filesystem, allowing access to filesystem hierarchy outside of the jail."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Time-of-check Time-of-use Race Condition"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc",
              "refsource": "MISC",
              "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210423-0009/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210423-0009/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
    "assignerShortName": "freebsd",
    "cveId": "CVE-2020-25584",
    "datePublished": "2021-04-07T14:43:26.000Z",
    "dateReserved": "2020-09-14T00:00:00.000Z",
    "dateUpdated": "2024-08-04T15:33:05.696Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2021-36023

CVE-2020-25584 (GCVE-0-2020-25584)

Tags

Sightings

Nomenclature

Related by attack behaviour