race-condition

To detect and exploit web race conditions in multi-step transactions, you need to send controlled concurrent requests to critical endpoints. This reveals TOCTOU timing windows and state inconsistencies by observing how parallel operations interact with shared application resources.

A TOCTOU timing attack works by executing parallel requests during the vulnerability window between checking a condition and using the result. It targets state inconsistencies across REST APIs, WebSocket connections, and serverless platforms to trigger unauthorized concurrent operations.

Yes, you can use Burp Suite Turbo Intruder for race condition testing by running parallel-request scripts against critical endpoints. This approach effectively identifies timing windows, rate-limiter bypass scenarios, and token reuse vulnerabilities across targeted web applications.

The best way to bypass rate limits using concurrent requests is to exploit race conditions by firing simultaneous parallel requests. This technique overwhelms the server's state validation logic before it can properly synchronize shared resource counters or enforce transaction limits.

Race condition testing works effectively for MFA bypass and token reuse scenarios by submitting concurrent operations that exploit timing windows. Sending simultaneous requests allows multiple transactions to validate against the same initial state before any single operation locks or updates it.

Concurrent requests cause state inconsistencies in web applications when multiple parallel operations interact with shared resources without proper locking mechanisms. This TOCTOU vulnerability allows simultaneous transactions to read and modify identical application states, bypassing intended validation controls.