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CVE-2021-22869— Improper access control in GitHub Enterprise Server allows self-hosted runners to execute outside their control group

Quick assessment

Affected
GitHub GitHub Enterprise Server
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.

GitHub Enterprise Server 是 （Github）开源的一个应用软件。提供一个将自己的GitHub实例设置为虚拟设备，从而提供可扩展，易于管理的平台。 GitHub Enterprise Server存在安全漏洞，该漏洞源于软件中的一个不恰当的访问控制漏洞允许工作流作业在它本不应该访问的自托管runner组中执行。这将影响使用自托管runner组进行访问控制的客户。访问一个企业runner组的存储库可以访问组织中的所有企业runner组，因为在请求期间进行了不正确的身份验证检查。这可能

AI Predicted 7.5 Difficulty: Moderate EPSS 1.20% · P67
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I. Basic Information for CVE-2021-22869

Vulnerability Information
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Vulnerability Title
Improper access control in GitHub Enterprise Server allows self-hosted runners to execute outside their control group
Source: CVE Program / CVE List V5
Vulnerability Description
An improper access control vulnerability in GitHub Enterprise Server allowed a workflow job to execute in a self-hosted runner group it should not have had access to. This affects customers using self-hosted runner groups for access control. A repository with access to one enterprise runner group could access all of the enterprise runner groups within the organization because of improper authentication checks during the request. This could cause code to be run unintentionally by the incorrect runner group. This vulnerability affected GitHub Enterprise Server versions from 3.0.0 to 3.0.15 and 3.1.0 to 3.1.7 and was fixed in 3.0.16 and 3.1.8 releases.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub Enterprise Server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitHub Enterprise Server 是 （Github）开源的一个应用软件。提供一个将自己的GitHub实例设置为虚拟设备，从而提供可扩展，易于管理的平台。 GitHub Enterprise Server存在安全漏洞，该漏洞源于软件中的一个不恰当的访问控制漏洞允许工作流作业在它本不应该访问的自托管runner组中执行。这将影响使用自托管runner组进行访问控制的客户。访问一个企业runner组的存储库可以访问组织中的所有企业runner组，因为在请求期间进行了不正确的身份验证检查。这可能
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
GitHub GitHub Enterprise Server 3.0 ~ 3.0.16 -

II. Public POCs for CVE-2021-22869

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III. Intelligence Information for CVE-2021-22869

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Other References for CVE-2021-22869 (2)

IV. Related Vulnerabilities

Same product: GitHub Enterprise Server
Same vendor: GitHub
Same weakness: CWE-668

V. Comments for CVE-2021-22869

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