Understanding the GitHub Supply Chain Attack: A Deep Dive into SpotBugs and OAuth Vulnerabilities
Visual Overview: sequenceDiagram participant User participant App as Client App participant AuthServer as Authorization Server participant Resource as Resource Server User->>App: 1. Click Login App->>AuthServer: 2. Authorization Request AuthServer->>User: 3. Login Page User->>AuthServer: 4. Authenticate AuthServer->>App: 5. Authorization Code App->>AuthServer: 6. Exchange Code for Token AuthServer->>App: 7. Access Token + Refresh Token App->>Resource: 8. API Request with Token Resource->>App: 9. Protected Resource The recent GitHub supply chain attack, where SpotBugs was exploited, underscores the critical importance of securing third-party tools and understanding the vulnerabilities within OAuth 2.0. This article explores the technical aspects of the attack, the role of authorization code flow, and the implications for software supply chain security. ...