CWE-317 (在GUI中的明文存储) — Vulnerability Class 6

CWE-317 represents a critical data exposure weakness where sensitive information is stored in cleartext within graphical user interface components. This vulnerability allows attackers to bypass visual obfuscation, such as masked password fields, by directly accessing underlying GUI objects through application programming interfaces. Even if data appears encoded or hidden from human view, adversaries can often reverse-engineer the encoding scheme to retrieve the original plaintext. To mitigate this risk, developers must ensure that sensitive data is never retained in memory within UI elements after it is no longer needed. Best practices include clearing input fields immediately after processing, utilizing secure memory handling techniques to overwrite sensitive buffers, and ensuring that no sensitive values are passed as arguments to GUI rendering functions. By strictly managing the lifecycle of sensitive data within the interface layer, organizations can prevent unauthorized access via API-based extraction.