Incorrect authorization check in GitHub Enterprise Server leading to escalation of privileges in GraphQL API requests from GitHub Apps using scoped user-to-server tokens
Vulnerability Description
An incorrect authorization vulnerability was identified in GitHub Enterprise Server, allowing for escalation of privileges in GraphQL API requests from GitHub Apps. This vulnerability allowed an app installed on an organization to gain access to and modify most organization-level resources that are not tied to a repository regardless of granted permissions, such as users and organization-wide projects. Resources associated with repositories were not impacted, such as repository file content, repository-specific projects, issues, or pull requests. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.7.1 and was fixed in versions 3.3.16, 3.4.11, 3.5.8, 3.6.4, 3.7.1. This vulnerability was reported via the GitHub Bug Bounty program.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- ahacker1
References
- https://docs.github.com/en/enterprise-server%403.7/admin/release-notes#3.7.1
- https://docs.github.com/en/enterprise-server%403.3/admin/release-notes#3.3.16
- https://docs.github.com/en/enterprise-server%403.4/admin/release-notes#3.4.11
- https://docs.github.com/en/enterprise-server%403.5/admin/release-notes#3.5.8
- https://docs.github.com/en/enterprise-server%403.6/admin/release-notes#3.6.4
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