CVE-2021-39947
Quick assessment
Affected
GitLab GitLab Runner
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 存在安全漏洞，该漏洞源于程序在将一个连接的网络流量写入到不同的连接，或用于一个文件到另一个文件的内容时，会触发错误的I/O。以下产品及版本受到影响：GitLab 13.7 before 14.3.4,14.4 before 14.4.2, 14.5 before 14.5.2。
Possible ATT&CK Techniques 1 AI
T1083 · File and Directory Discovery
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I. Basic Information for CVE-2021-39947
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In specific circumstances, trace file buffers in GitLab Runner versions up to 14.3.4, 14.4 to 14.4.2, and 14.5 to 14.5.2 would re-use the file descriptor 0 for multiple traces and mix the output of several jobs
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
GitLab 信息泄露漏洞
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 存在安全漏洞，该漏洞源于程序在将一个连接的网络流量写入到不同的连接，或用于一个文件到另一个文件的内容时，会触发错误的I/O。以下产品及版本受到影响：GitLab 13.7 before 14.3.4,14.4 before 14.4.2, 14.5 before 14.5.2。
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 Runner | <14.3.4 | - |
|
II. Public POCs for CVE-2021-39947
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2021-39947 (2)
-
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39947.json x_refsource_CONFIRM
-
https://gitlab.com/gitlab-org/gitlab-runner/-/issues/28732 x_refsource_MISC
Same Patch Batch · GitLab · 2022-06-06 · 8 CVEs total
| CVE-2022-1680 | 9.9 CRITICAL | GitLab 访问控制错误漏洞 |
| CVE-2022-1940 | 7.7 HIGH | GitLab 跨站脚本漏洞 |
| CVE-2022-1935 | 6.5 MEDIUM | GitLab 授权问题漏洞 |
| CVE-2022-1936 | 6.5 MEDIUM | GitLab 授权问题漏洞 |
| CVE-2022-1944 | 5.4 MEDIUM | GitLab 授权问题漏洞 |
| CVE-2022-1821 | 4.3 MEDIUM | GitLab Community Edition和GitLab Enterprise Edition 资源管理错误漏洞 |
| CVE-2022-1783 | 2.7 LOW | GitLab Enterprise Edition和GitLab Community Edition 安全漏洞 |
IV. Related Vulnerabilities
Same vendor: GitLab
V. Comments for CVE-2021-39947
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