Vulnerability-Lookup

CNVD-2022-18047

Vulnerability from cnvd - Published: 2022-03-10

Title

Samba竞争条件问题漏洞

Description

Samba是用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 Samba file server 存在后置链接漏洞，该漏洞源于创建目录时的符号链接竞争条件而存在的。远程认证用户可以使用 SMB1 或 NFS 符号链接竞争在共享定义之外的 Unix 文件系统上创建目录。远程攻击者可利用该漏洞绕过实施的安全限制。

Severity

低

Patch Name

Samba竞争条件问题漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.samba.org/samba/security/CVE-2021-43566.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-43566

Impacted products

Name
Samba Samba <4.13.16

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-43566"
    }
  },
  "description": "Samba\u662f\u7528\u4e8e Linux \u548c Unix \u7684\u6807\u51c6 Windows \u4e92\u64cd\u4f5c\u6027\u7a0b\u5e8f\u5957\u4ef6\u3002\n\nSamba file server \u5b58\u5728\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u521b\u5efa\u76ee\u5f55\u65f6\u7684\u7b26\u53f7\u94fe\u63a5\u7ade\u4e89\u6761\u4ef6\u800c\u5b58\u5728\u7684\u3002 \u8fdc\u7a0b\u8ba4\u8bc1\u7528\u6237\u53ef\u4ee5\u4f7f\u7528 SMB1 \u6216 NFS \u7b26\u53f7\u94fe\u63a5\u7ade\u4e89\u5728\u5171\u4eab\u5b9a\u4e49\u4e4b\u5916\u7684 Unix \u6587\u4ef6\u7cfb\u7edf\u4e0a\u521b\u5efa\u76ee\u5f55\u3002 \u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u5b9e\u65bd\u7684\u5b89\u5168\u9650\u5236\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://www.samba.org/samba/security/CVE-2021-43566.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-18047",
  "openTime": "2022-03-10",
  "patchDescription": "Samba\u662f\u7528\u4e8e Linux \u548c Unix \u7684\u6807\u51c6 Windows \u4e92\u64cd\u4f5c\u6027\u7a0b\u5e8f\u5957\u4ef6\u3002\r\n\r\nSamba file server \u5b58\u5728\u540e\u7f6e\u94fe\u63a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u521b\u5efa\u76ee\u5f55\u65f6\u7684\u7b26\u53f7\u94fe\u63a5\u7ade\u4e89\u6761\u4ef6\u800c\u5b58\u5728\u7684\u3002 \u8fdc\u7a0b\u8ba4\u8bc1\u7528\u6237\u53ef\u4ee5\u4f7f\u7528 SMB1 \u6216 NFS \u7b26\u53f7\u94fe\u63a5\u7ade\u4e89\u5728\u5171\u4eab\u5b9a\u4e49\u4e4b\u5916\u7684 Unix \u6587\u4ef6\u7cfb\u7edf\u4e0a\u521b\u5efa\u76ee\u5f55\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u5b9e\u65bd\u7684\u5b89\u5168\u9650\u5236\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": "Samba\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Samba Samba \u003c4.13.16"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-43566",
  "serverity": "\u4f4e",
  "submitTime": "2022-01-12",
  "title": "Samba\u7ade\u4e89\u6761\u4ef6\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2021-43566 (GCVE-0-2021-43566)

Vulnerability from cvelistv5 – Published: 2022-01-11 15:15 – Updated: 2024-08-04 04:03

Summary

All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://bugzilla.samba.org/show_bug.cgi?id=13979	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2022011…	x_refsource_CONFIRM
https://www.samba.org/samba/security/CVE-2021-435…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T04:03:08.360Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.samba.org/show_bug.cgi?id=13979"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20220110-0001/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.samba.org/samba/security/CVE-2021-43566.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-06-01T14:25:24.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.samba.org/show_bug.cgi?id=13979"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20220110-0001/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.samba.org/samba/security/CVE-2021-43566.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-43566",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.samba.org/show_bug.cgi?id=13979",
              "refsource": "MISC",
              "url": "https://bugzilla.samba.org/show_bug.cgi?id=13979"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20220110-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20220110-0001/"
            },
            {
              "name": "https://www.samba.org/samba/security/CVE-2021-43566.html",
              "refsource": "MISC",
              "url": "https://www.samba.org/samba/security/CVE-2021-43566.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-43566",
    "datePublished": "2022-01-11T15:15:01.000Z",
    "dateReserved": "2021-11-09T00:00:00.000Z",
    "dateUpdated": "2024-08-04T04:03:08.360Z",
    "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.

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CNVD-2022-18047

CVE-2021-43566 (GCVE-0-2021-43566)

Tags

Sightings

Nomenclature

Related by attack behaviour