D-Link Vulnerability Vendor: D-Link Product: DIR619L Version: 2.06B01 Type: Stack Overflow Author: Jiaqian Peng Mail: pengjiaqian@lie.ac.cn Institution: Institute of Information Engineering, Chinese Academy of Sciences (III, CAS) Vulnerability Description A stack overflow vulnerability was found in the D-Link router with firmware version 2.06B01, allowing remote attackers to crash the server. Stack Overflow In the binary: The parameter is directly passed by the attacker. If this data is too long, it causes a stack overflow. The input is not checked and directly copied to a local variable on the stack, overriding the return address of the function, causing buffer overflow. Relevant code snippet: PoC Set as , and the router will crash: Result The target router crashes and cannot provide services correctly and persistently.