Vulnerability-Lookup

CNVD-2021-01566

Vulnerability from cnvd - Published: 2021-01-09

Title

OpenDKIM权限提升漏洞

Description

Opendkim是Opendkim组织的一个基于C语言的DKIM发件人身份验证系统的软件。 OpenDKIM 2.10.3版本及之前版本存在权限提升漏洞，该漏洞源于未能正确的程序对高级本地过程的调用，本地用户通过对tmp testkeys文件(与t-testdata相关)的符号链接攻击获得特权。目前没有详细漏洞细节提供。

Severity

中

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新：https://github.com/trusteddomainproject/OpenDKIM/issues/113

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-35766

Impacted products

Name
Opendkim OpenDKIM <=2.10.3

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-35766",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-35766"
    }
  },
  "description": "Opendkim\u662fOpendkim\u7ec4\u7ec7\u7684\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7684DKIM\u53d1\u4ef6\u4eba\u8eab\u4efd\u9a8c\u8bc1\u7cfb\u7edf\u7684\u8f6f\u4ef6\u3002\n\nOpenDKIM 2.10.3\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u80fd\u6b63\u786e\u7684\u7a0b\u5e8f\u5bf9\u9ad8\u7ea7\u672c\u5730\u8fc7\u7a0b\u7684\u8c03\u7528\uff0c\u672c\u5730\u7528\u6237\u901a\u8fc7\u5bf9tmp testkeys\u6587\u4ef6(\u4e0et-testdata\u76f8\u5173)\u7684\u7b26\u53f7\u94fe\u63a5\u653b\u51fb\u83b7\u5f97\u7279\u6743\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1ahttps://github.com/trusteddomainproject/OpenDKIM/issues/113",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-01566",
  "openTime": "2021-01-09",
  "products": {
    "product": "Opendkim OpenDKIM \u003c=2.10.3"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-35766",
  "serverity": "\u4e2d",
  "submitTime": "2020-12-29",
  "title": "OpenDKIM\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2020-35766 (GCVE-0-2020-35766)

Vulnerability from cvelistv5 – Published: 2020-12-28 19:21 – Updated: 2024-08-04 17:09

Summary

The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the "A number of self-test programs are included here for unit-testing the library" situation.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/trusteddomainproject/OpenDKIM/…	x_refsource_MISC

Show details on NVD website

JSON

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          "dateUpdated": "2024-08-04T17:09:15.173Z",
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            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/trusteddomainproject/OpenDKIM/issues/113"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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      ],
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          "value": "The test suite in libopendkim in OpenDKIM through 2.10.3 allows local users to gain privileges via a symlink attack against the /tmp/testkeys file (related to t-testdata.h, t-setup.c, and t-cleanup.c). NOTE: this is applicable to persons who choose to engage in the \"A number of self-test programs are included here for unit-testing the library\" situation."
        }
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        "dateUpdated": "2020-12-28T19:21:20.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      },
      "references": [
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            "x_refsource_MISC"
          ],
          "url": "https://github.com/trusteddomainproject/OpenDKIM/issues/113"
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          "ID": "CVE-2020-35766",
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        "affects": {
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            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                        ]
                      }
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                "vendor_name": "n/a"
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        "description": {
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}

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.

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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-2021-01566

CVE-2020-35766 (GCVE-0-2020-35766)

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