CVE-2020-10517— Improper access control in GitHub Enterprise Server leading to the enumeration of private repository names
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是一套面向开源及私有软件项目的托管平台。Git是一套免费、开源的分布式版本控制系统。 GitHub Enterprise Server存在安全漏洞，该漏洞源于经过身份验证的用户根据其数字标识确定未经授权的私有存储库的名称；具体受影响的环境如下：GitHub Enterprise Server 2.22之前版本，其中2.21.6，2.20.15和2.19.21已修复。
Possible ATT&CK Techniques 1 AI
T1083 · File and Directory Discovery
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I. Basic Information for CVE-2020-10517
Vulnerability Information
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Vulnerability Title
Improper access control in GitHub Enterprise Server leading to the enumeration of private repository names
Source: 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 determine the names of unauthorized private repositories given their numerical IDs. This vulnerability did not allow unauthorized access to any repository content besides the name. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22 and was fixed in versions 2.21.6, 2.20.15, and 2.19.21. This vulnerability was reported via the GitHub Bug Bounty program.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub Enterprise Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitHub是一套面向开源及私有软件项目的托管平台。Git是一套免费、开源的分布式版本控制系统。 GitHub Enterprise Server存在安全漏洞，该漏洞源于经过身份验证的用户根据其数字标识确定未经授权的私有存储库的名称；具体受影响的环境如下：GitHub Enterprise Server 2.22之前版本，其中2.21.6，2.20.15和2.19.21已修复。
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 | 2.21 ~ 2.21.6 | - |
|
II. Public POCs for CVE-2020-10517
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2020-10517 (3)
-
https://enterprise.github.com/releases/2.20.15/notes x_refsource_MISC
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https://enterprise.github.com/releases/2.21.6/notes x_refsource_MISC
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https://enterprise.github.com/releases/2.19.21/notes x_refsource_MISC
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