CVE-2022-46258 : Security Advisory and Response

An incorrect authorization vulnerability in GitHub Enterprise Server led to Action Workflow modifications without Workflow Scope being allowed.

Understanding CVE-2022-46258

This CVE details an authorization vulnerability in GitHub Enterprise Server that enabled unauthorized modification of Action Workflow files.

What is CVE-2022-46258?

The vulnerability in GitHub Enterprise Server allowed a repository-scoped token with read/write access to modify Action Workflow files without a Workflow scope, impacting versions prior to 3.7.

The Impact of CVE-2022-46258

This vulnerability could be exploited to modify Workflow files, potentially leading to unauthorized changes and actions within the server.

Technical Details of CVE-2022-46258

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue resided in the Create or Update file contents API failing to enforce workflow scope, allowing unauthorized modification of workflow files.

Affected Systems and Versions

GitHub Enterprise Server versions 3.3.16, 3.4.11, 3.5.8, and 3.6.4 were affected by this vulnerability.

Exploitation Mechanism

By leveraging a repository-scoped token with read/write access, threat actors could modify Action Workflow files without the necessary Workflow scope.

Mitigation and Prevention

To prevent exploitation and protect systems, the following steps should be taken.

Immediate Steps to Take

Affected users should update their GitHub Enterprise Server to versions 3.3.16, 3.4.11, 3.5.8, or 3.6.4 to patch the vulnerability.

Long-Term Security Practices

Enforcing proper authorization and access controls, along with regular security audits, can help prevent similar vulnerabilities.

Patching and Updates

Stay informed about security updates and promptly apply patches to mitigate risks and enhance the security of GitHub Enterprise Server.