Vulnerabilities > CVE-2021-22864 - Unspecified vulnerability in Github Enterprise Server
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
A remote code execution vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration options used by GitHub Pages were not sufficiently restricted and made it possible to override environment variables leading to code execution 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 3.0.3 and was fixed in 3.0.3, 2.22.9, and 2.21.17. This vulnerability was reported via the GitHub Bug Bounty program.
Vulnerable Configurations
References
- https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.17
- https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.17
- https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.9
- https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.9
- https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.3
- https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.3