CVE

CVE-2020-10518

Date: (C)2020-08-28   (M)2023-12-22

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 and was fixed in 2.21.6, 2.20.15, and 2.19.21. The underlying issues contributing to this vulnerability were identified both internally and through the GitHub Security Bug Bounty program.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:		CVSS V2 Severity:
CVSS Score : 8.8		CVSS Score : 6.5
Exploit Score: 2.8		Exploit Score: 8.0
Impact Score: 5.9		Impact Score: 6.4
CVSS V3 Metrics:		CVSS V2 Metrics:
Attack Vector: NETWORK		Access Vector: NETWORK
Attack Complexity: LOW		Access Complexity: LOW
Privileges Required: LOW		Authentication: SINGLE
User Interaction: NONE		Confidentiality: PARTIAL
Scope: UNCHANGED		Integrity: PARTIAL
Confidentiality: HIGH		Availability: PARTIAL
Integrity: HIGH
Availability: HIGH

Reference:

https://enterprise.github.com/releases/2.19.21/notes

https://enterprise.github.com/releases/2.20.15/notes

https://enterprise.github.com/releases/2.21.6/notes