Vulnerability-Lookup

CNVD-2021-26108

Vulnerability from cnvd - Published: 2021-04-09

Title

Gitlab Community Edition存在未明漏洞

Description

GitLab是美国GitLab公司的一款使用Ruby on Rails开发的、自托管的、Git（版本控制系统）项目仓库应用程序。该程序可用于查阅项目的文件内容、提交历史、Bug列表等。 Gitlab Community Edition 13.7.1-1版本至13.7.2-1版本存在安全漏洞，该漏洞源于用于包名的正则表达式的编写方式使执行时间根据恶意输入字符串的长度呈二次增长，攻击者可利用该漏洞形成时间消耗从而达到拒绝服务目的。

Severity

中

Patch Name

Gitlab Community Edition存在未明漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://about.gitlab.com/releases/2021/01/07/security-release-gitlab-13-7-2-released/#regular-expression-denial-of-service-in-package-uploads

Reference

https://www.auscert.org.au/bulletins/ESB-2021.0086/

Impacted products

Name
GitLab Gitlab Community Edition >=13.7.1-1，<=13.7.2-1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-26414",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-26414"
    }
  },
  "description": "GitLab\u662f\u7f8e\u56fdGitLab\u516c\u53f8\u7684\u4e00\u6b3e\u4f7f\u7528Ruby on Rails\u5f00\u53d1\u7684\u3001\u81ea\u6258\u7ba1\u7684\u3001Git\uff08\u7248\u672c\u63a7\u5236\u7cfb\u7edf\uff09\u9879\u76ee\u4ed3\u5e93\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u53ef\u7528\u4e8e\u67e5\u9605\u9879\u76ee\u7684\u6587\u4ef6\u5185\u5bb9\u3001\u63d0\u4ea4\u5386\u53f2\u3001Bug\u5217\u8868\u7b49\u3002\n\nGitlab Community Edition 13.7.1-1\u7248\u672c\u81f313.7.2-1\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u4e8e\u5305\u540d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7f16\u5199\u65b9\u5f0f\u4f7f\u6267\u884c\u65f6\u95f4\u6839\u636e\u6076\u610f\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u5448\u4e8c\u6b21\u589e\u957f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5f62\u6210\u65f6\u95f4\u6d88\u8017\u4ece\u800c\u8fbe\u5230\u62d2\u7edd\u670d\u52a1\u76ee\u7684\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://about.gitlab.com/releases/2021/01/07/security-release-gitlab-13-7-2-released/#regular-expression-denial-of-service-in-package-uploads",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-26108",
  "openTime": "2021-04-09",
  "patchDescription": "GitLab\u662f\u7f8e\u56fdGitLab\u516c\u53f8\u7684\u4e00\u6b3e\u4f7f\u7528Ruby on Rails\u5f00\u53d1\u7684\u3001\u81ea\u6258\u7ba1\u7684\u3001Git\uff08\u7248\u672c\u63a7\u5236\u7cfb\u7edf\uff09\u9879\u76ee\u4ed3\u5e93\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u53ef\u7528\u4e8e\u67e5\u9605\u9879\u76ee\u7684\u6587\u4ef6\u5185\u5bb9\u3001\u63d0\u4ea4\u5386\u53f2\u3001Bug\u5217\u8868\u7b49\u3002\r\n\r\nGitlab Community Edition 13.7.1-1\u7248\u672c\u81f313.7.2-1\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u4e8e\u5305\u540d\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u7f16\u5199\u65b9\u5f0f\u4f7f\u6267\u884c\u65f6\u95f4\u6839\u636e\u6076\u610f\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u5448\u4e8c\u6b21\u589e\u957f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5f62\u6210\u65f6\u95f4\u6d88\u8017\u4ece\u800c\u8fbe\u5230\u62d2\u7edd\u670d\u52a1\u76ee\u7684\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": "Gitlab Community Edition\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "GitLab Gitlab Community Edition \u003e=13.7.1-1\uff0c\u003c=13.7.2-1"
  },
  "referenceLink": "https://www.auscert.org.au/bulletins/ESB-2021.0086/",
  "serverity": "\u4e2d",
  "submitTime": "2021-01-12",
  "title": "Gitlab Community Edition\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2020-26414 (GCVE-0-2020-26414)

Vulnerability from cvelistv5 – Published: 2021-01-15 15:15 – Updated: 2024-08-04 15:56

Summary

An issue has been discovered in GitLab affecting all versions starting from 12.4. The regex used for package names is written in a way that makes execution time have quadratic growth based on the length of the malicious input string.

Severity

4.3 (Medium)


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

CWE

Incorrect regular expression in GitLab

Assigner

GitLab mitre root

References

2 references

URL	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/270199	x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
GitLab	GitLab	Affected: >=12.4, <13.5.6 Affected: >=13.6.0, <13.6.4 Affected: >=13.7.0, <13.7.2

Credits

This vulnerability has been discovered internally by the GitLab team

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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.