CWE-1088 (远程资源无超时同步访问) — Vulnerability Class 5

CWE-1088 represents a critical availability weakness where software performs synchronous requests to external resources without implementing adequate timeout mechanisms. This flaw typically manifests when applications wait indefinitely for responses from remote servers, APIs, or databases, leaving the system vulnerable to denial-of-service conditions. Attackers exploit this by intentionally delaying or blocking network responses, causing the application’s threads to hang and exhausting system resources such as memory and CPU cycles. Consequently, legitimate users experience service interruptions or complete application crashes. To mitigate this risk, developers must configure explicit, reasonable timeout values for all network operations and implement retry logic with exponential backoff. Additionally, using asynchronous programming models or non-blocking I/O can prevent thread starvation, ensuring that the application remains responsive and resilient even when remote services are unresponsive or compromised.