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

To clipboard

{
  "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 CNA under the mitre root

CNA scorecard E 29/100 over 2159 records in the last 180 days details

References

1 reference

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

Show details on NVD website

JSON

To clipboard

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      "references": [
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          "url": "https://github.com/trusteddomainproject/OpenDKIM/issues/113"
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                      "product_name": "n/a",
                      "version": {
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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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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