Vulnerability-Lookup

CNVD-2021-91186

Vulnerability from cnvd - Published: 2021-11-25

Title

GitLab数据伪造问题漏洞（CNVD-2021-91186）

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 EE存在数据伪造问题漏洞，攻击者可利用该漏洞在极少数情况下绕过CODEOWNERS合并请求批准要求。

Severity

低

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.auscert.org.au/bulletins/

Reference

https://www.auscert.org.au/bulletins/ESB-2021.3608

Impacted products

Name
GitLab GitLab EE >=11.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39909"
    }
  },
  "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 EE\u5b58\u5728\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u6781\u5c11\u6570\u60c5\u51b5\u4e0b\u7ed5\u8fc7CODEOWNERS\u5408\u5e76\u8bf7\u6c42\u6279\u51c6\u8981\u6c42\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.auscert.org.au/bulletins/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-91186",
  "openTime": "2021-11-25",
  "products": {
    "product": "GitLab GitLab EE \u003e=11.3"
  },
  "referenceLink": "https://www.auscert.org.au/bulletins/ESB-2021.3608",
  "serverity": "\u4f4e",
  "submitTime": "2021-11-01",
  "title": "GitLab\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-91186\uff09"
}

CVE-2021-39909 (GCVE-0-2021-39909)

Vulnerability from cvelistv5 – Published: 2021-11-04 23:03 – Updated: 2024-08-04 02:20

Summary

Lack of email address ownership verification in the CODEOWNERS feature in all versions of GitLab EE starting from 11.3 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 allows an attacker to bypass CODEOWNERS Merge Request approval requirement under rare circumstances

Severity

5.3 (Medium)


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

CWE

Unverified ownership in GitLab

Assigner

GitLab mitre root

References

3 references

URL	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/335191	x_refsource_MISC
https://hackerone.com/reports/1237750	x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
GitLab	GitLab	Affected: >=11.3, <14.2.6 Affected: >=14.3, <14.3.4 Affected: >=14.4, <14.4.1

Credits

Thanks vaib25vicky for reporting this vulnerability through our HackerOne bug bounty program

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:20:33.725Z",
          "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/335191"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1237750"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39909.json"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GitLab",
          "vendor": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e=11.3, \u003c14.2.6"
            },
            {
              "status": "affected",
              "version": "\u003e=14.3, \u003c14.3.4"
            },
            {
              "status": "affected",
              "version": "\u003e=14.4, \u003c14.4.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Thanks vaib25vicky for reporting this vulnerability through our HackerOne bug bounty program"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Lack of email address ownership verification in the CODEOWNERS feature in all versions of GitLab EE starting from 11.3 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 allows an attacker to bypass CODEOWNERS Merge Request approval requirement under rare circumstances"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Unverified ownership in GitLab",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-05-13T13:45:46.000Z",
        "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "shortName": "GitLab"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/335191"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1237750"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39909.json"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@gitlab.com",
          "ID": "CVE-2021-39909",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "GitLab",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e=11.3, \u003c14.2.6"
                          },
                          {
                            "version_value": "\u003e=14.3, \u003c14.3.4"
                          },
                          {
                            "version_value": "\u003e=14.4, \u003c14.4.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "GitLab"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Thanks vaib25vicky for reporting this vulnerability through our HackerOne bug bounty program"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "impact": {
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N",
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        },
        "problemtype": {
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                  "lang": "eng",
                  "value": "Unverified ownership in GitLab"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://gitlab.com/gitlab-org/gitlab/-/issues/335191",
              "refsource": "MISC",
              "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/335191"
            },
            {
              "name": "https://hackerone.com/reports/1237750",
              "refsource": "MISC",
              "url": "https://hackerone.com/reports/1237750"
            },
            {
              "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39909.json",
              "refsource": "CONFIRM",
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            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
    "assignerShortName": "GitLab",
    "cveId": "CVE-2021-39909",
    "datePublished": "2021-11-04T23:03:27.000Z",
    "dateReserved": "2021-08-23T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:20:33.725Z",
    "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.

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.