Vulnerability-Lookup

CNVD-2021-99768

Vulnerability from cnvd - Published: 2021-12-14

Title

GitLab访问控制错误漏洞（CNVD-2021-99768）

Description

GitLab是美国GitLab公司的一个开源的端到端软件开发平台，具有内置的版本控制、问题跟踪、代码审查、CI/CD（持续集成和持续交付）等功能。 GitLab CE/EE存在访问控制错误漏洞，该漏洞源于从12.10到14.3.6之前的GitLab CE/EE存在错误的访问控制允许合并请求的作者即使在他们的项目访问权限被撤销后，也批准合并请求。目前没有详细漏洞细节提供。

Severity

低

Patch Name

GitLab访问控制错误漏洞（CNVD-2021-99768）的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://www.auscert.org.au/bulletins/ESB-2021.4141

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-39945

Impacted products

Name
GitLab GitLab CE/EE >=12.10，<14.3.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39945",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-39945"
    }
  },
  "description": "GitLab\u662f\u7f8e\u56fdGitLab\u516c\u53f8\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u7aef\u5230\u7aef\u8f6f\u4ef6\u5f00\u53d1\u5e73\u53f0\uff0c\u5177\u6709\u5185\u7f6e\u7684\u7248\u672c\u63a7\u5236\u3001\u95ee\u9898\u8ddf\u8e2a\u3001\u4ee3\u7801\u5ba1\u67e5\u3001CI/CD\uff08\u6301\u7eed\u96c6\u6210\u548c\u6301\u7eed\u4ea4\u4ed8\uff09\u7b49\u529f\u80fd\u3002\n\nGitLab CE/EE\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4ece12.10\u523014.3.6\u4e4b\u524d\u7684GitLab CE/EE\u5b58\u5728\u9519\u8bef\u7684\u8bbf\u95ee\u63a7\u5236\u5141\u8bb8\u5408\u5e76\u8bf7\u6c42\u7684\u4f5c\u8005\u5373\u4f7f\u5728\u4ed6\u4eec\u7684\u9879\u76ee\u8bbf\u95ee\u6743\u9650\u88ab\u64a4\u9500\u540e\uff0c\u4e5f\u6279\u51c6\u5408\u5e76\u8bf7\u6c42\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.auscert.org.au/bulletins/ESB-2021.4141",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-99768",
  "openTime": "2021-12-14",
  "patchDescription": "GitLab\u662f\u7f8e\u56fdGitLab\u516c\u53f8\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u7aef\u5230\u7aef\u8f6f\u4ef6\u5f00\u53d1\u5e73\u53f0\uff0c\u5177\u6709\u5185\u7f6e\u7684\u7248\u672c\u63a7\u5236\u3001\u95ee\u9898\u8ddf\u8e2a\u3001\u4ee3\u7801\u5ba1\u67e5\u3001CI/CD\uff08\u6301\u7eed\u96c6\u6210\u548c\u6301\u7eed\u4ea4\u4ed8\uff09\u7b49\u529f\u80fd\u3002\r\n\r\nGitLab CE/EE\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4ece12.10\u523014.3.6\u4e4b\u524d\u7684GitLab CE/EE\u5b58\u5728\u9519\u8bef\u7684\u8bbf\u95ee\u63a7\u5236\u5141\u8bb8\u5408\u5e76\u8bf7\u6c42\u7684\u4f5c\u8005\u5373\u4f7f\u5728\u4ed6\u4eec\u7684\u9879\u76ee\u8bbf\u95ee\u6743\u9650\u88ab\u64a4\u9500\u540e\uff0c\u4e5f\u6279\u51c6\u5408\u5e76\u8bf7\u6c42\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-99768\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "GitLab GitLab CE/EE \u003e=12.10\uff0c\u003c14.3.6"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-39945",
  "serverity": "\u4f4e",
  "submitTime": "2021-12-10",
  "title": "GitLab\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-99768\uff09"
}

CVE-2021-39945 (GCVE-0-2021-39945)

Vulnerability from cvelistv5 – Published: 2021-12-13 15:47 – Updated: 2024-08-04 02:20

Summary

Improper access control in the GitLab CE/EE API affecting all versions starting from 9.4 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an author of a Merge Request to approve the Merge Request even after having their project access revoked

Severity

2.7 (Low)


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

CWE

Improper access control in GitLab

Assigner

GitLab CNA under the mitre root

CNA scorecard C 75/100 over 339 records in the last 180 days details

References

3 references

URL	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/331675	x_refsource_MISC
https://hackerone.com/reports/1198317	x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
GitLab	GitLab	Affected: >=14.5, <14.5.2 Affected: >=14.4, <14.4.4 Affected: >=9.4, <14.3.6

Credits

Thanks @muthu_prakash for reporting this vulnerability through our HackerOne bug bounty program

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:20:34.109Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/331675"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1198317"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39945.json"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GitLab",
          "vendor": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e=14.5, \u003c14.5.2"
            },
            {
              "status": "affected",
              "version": "\u003e=14.4, \u003c14.4.4"
            },
            {
              "status": "affected",
              "version": "\u003e=9.4, \u003c14.3.6"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Thanks @muthu_prakash for reporting this vulnerability through our HackerOne bug bounty program"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper access control in the GitLab CE/EE API affecting all versions starting from 9.4 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an author of a Merge Request to approve the Merge Request even after having their project access revoked"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 2.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "description": "Improper access control in GitLab",
              "lang": "en",
              "type": "text"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-13T15:47:49.000Z",
        "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "shortName": "GitLab"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/331675"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1198317"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39945.json"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@gitlab.com",
          "ID": "CVE-2021-39945",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "GitLab",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e=14.5, \u003c14.5.2"
                          },
                          {
                            "version_value": "\u003e=14.4, \u003c14.4.4"
                          },
                          {
                            "version_value": "\u003e=9.4, \u003c14.3.6"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "GitLab"
              }
            ]
          }
        },
        "credit": [
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            "lang": "eng",
            "value": "Thanks @muthu_prakash for reporting this vulnerability through our HackerOne bug bounty program"
          }
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        "data_format": "MITRE",
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        "data_version": "4.0",
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            }
          ]
        },
        "impact": {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 2.6,
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            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N",
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              "refsource": "MISC",
              "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/331675"
            },
            {
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              "refsource": "MISC",
              "url": "https://hackerone.com/reports/1198317"
            },
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  "cveMetadata": {
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    "assignerShortName": "GitLab",
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    "datePublished": "2021-12-13T15:47:49.000Z",
    "dateReserved": "2021-08-23T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:20:34.109Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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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.

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