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CVE-2020-10519— Unsafe configuration options in GitHub Pages leading to remote code execution on GitHub Enterprise Server

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。 GitHub Enterprise Server prior to 2.22.7 存在安全漏洞，攻击者可利用该漏洞远程代码执行。

AI Predicted 8.8 Difficulty: Easy EPSS 2.99% · P86
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I. Basic Information for CVE-2020-10519

Vulnerability Information
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Vulnerability Title
Unsafe configuration options in GitHub Pages leading to remote code execution on GitHub Enterprise Server
Source: CVE Program / CVE List V5
Vulnerability Description
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration of the underlying parsers used by GitHub Pages were not sufficiently restricted and made it possible to execute commands on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 2.22.7 and was fixed in 2.22.7, 2.21.15, and 2.20.24. The underlying issues contributing to this vulnerability were identified through the GitHub Security Bug Bounty program.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub 命令注入漏洞
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。 GitHub Enterprise Server prior to 2.22.7 存在安全漏洞，攻击者可利用该漏洞远程代码执行。
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 2.20 ~ 2.20.24 -

II. Public POCs for CVE-2020-10519

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III. Intelligence Information for CVE-2020-10519

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Other References for CVE-2020-10519 (2)

Same Patch Batch · GitHub · 2021-03-03 · 4 CVEs total

CVE-2021-22861 Improper access control in GitHub Enterprise Server leading to unauthorized write access t
CVE-2021-22862 Improper access control in GitHub Enterprise Server leading to the disclosure of Actions s
CVE-2021-22863 Improper access control in GitHub Enterprise Server leading to unauthorized changes to mai

IV. Related Vulnerabilities

Same product: GitHub Enterprise Server
Same vendor: GitHub
Same weakness: CWE-77

V. Comments for CVE-2020-10519

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