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CVE-2021-39937

Quick assessment

Affected
GitLab GitLab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 存在权限许可和访问控制问题漏洞，该漏洞源于在GitLab CE/EE的14.3.6，14.4.4之前的所有版本，14.4.4之前的所有版本从 14.5 到 14.5.2中存在访问记忆逻辑的冲突。攻击者可利用该漏洞导致潜在的群组特权提升和在极少数情况下的项目。

CVSS 5.9 · Medium EPSS 0.81% · P56

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-39937

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A collision in access memoization logic in all versions of GitLab CE/EE before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, leads to potential elevated privileges in groups and projects under rare circumstances
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
GitLab 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability 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 存在权限许可和访问控制问题漏洞，该漏洞源于在GitLab CE/EE的14.3.6，14.4.4之前的所有版本，14.4.4之前的所有版本从 14.5 到 14.5.2中存在访问记忆逻辑的冲突。攻击者可利用该漏洞导致潜在的群组特权提升和在极少数情况下的项目。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitLab GitLab >=0.0, <14.3.6 -

II. Public POCs for CVE-2021-39937

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III. Intelligence Information for CVE-2021-39937

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Other References for CVE-2021-39937 (2)

Same Patch Batch · GitLab · 2021-12-13 · 20 CVEs total

CVE-2021-39944 7.1 HIGH GitLab 权限许可和访问控制问题漏洞
CVE-2021-39935 6.8 MEDIUM GitLab代码问题漏洞
CVE-2021-39939 6.5 MEDIUM GitLab 资源管理错误漏洞
CVE-2021-39915 5.3 MEDIUM GitLab 访问控制错误漏洞
CVE-2021-39919 4.4 MEDIUM GitLab 授权问题漏洞
CVE-2021-39917 4.3 MEDIUM GitLab 输入验证错误漏洞
CVE-2021-39932 4.3 MEDIUM GitLab 输入验证错误漏洞
CVE-2021-39934 4.3 MEDIUM GitLab 访问控制错误漏洞
CVE-2021-39916 4.3 MEDIUM GitLab 授权问题漏洞
CVE-2021-39930 4.3 MEDIUM GitLab 信息泄露漏洞
CVE-2021-39933 4.3 MEDIUM GitLab 安全漏洞
CVE-2021-39940 4.3 MEDIUM GitLab 安全漏洞
CVE-2021-39941 3.7 LOW GitLab 信息泄露漏洞
CVE-2021-39936 3.5 LOW GitLab 访问控制错误漏洞
CVE-2021-39938 3.1 LOW GitLab 资源管理错误漏洞
CVE-2021-39931 3.1 LOW GitLab 安全漏洞
CVE-2021-39918 3.1 LOW GitLab 授权问题漏洞
CVE-2021-39945 2.7 LOW GitLab 访问控制错误漏洞
CVE-2021-39910 2.6 LOW GitLab 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab

V. Comments for CVE-2021-39937

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