CVE-2021-22861— GitHub Enterprise Server 安全漏洞
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一、 漏洞 CVE-2021-22861 基础信息
漏洞信息
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Vulnerability Title
Improper access control in GitHub Enterprise Server leading to unauthorized write access to forkable repositories
来源: CVE Program / CVE List V5
Vulnerability Description
An improper access control vulnerability was identified in GitHub Enterprise Server that allowed authenticated users of the instance to gain write access to unauthorized repositories via specifically crafted pull requests and REST API requests. An attacker would need to be able to fork the targeted repository, a setting that is disabled by default for organization owned private repositories. Branch protections such as required pull request reviews or status checks would prevent unauthorized commits from being merged without further review or validation. This vulnerability affected all versions of GitHub Enterprise Server since 2.4.21 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1. This vulnerability was reported via the GitHub Bug Bounty program.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
GitHub Enterprise Server 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
GitHub是一套面向开源及私有软件项目的托管平台。 GitHub Enterprise Server 存在安全漏洞，该漏洞允许实例的经过身份验证的用户通过特别设计的pull请求和REST API请求获得对未授权存储库的写访问权。以下产品及版本：GitHub Enterprise Server since 2.4.21 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| GitHub | GitHub Enterprise Server | 2.20 ~ 2.20.24 | - |
二、漏洞 CVE-2021-22861 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2021-22861 其他参考 (2)
同批安全公告 · GitHub · 2021-03-03 · 共 4 条
| CVE-2020-10519 | GitHub 命令注入漏洞 | |
| CVE-2021-22862 | GitHub Enterprise Server 安全漏洞 | |
| CVE-2021-22863 | GitHub Enterprise Server 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-22861
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