Belkin Vulnerability Vendor: Belkin Product: F9K1122 Version: 1.00.33 Type: Stack Overflow Author: Jiaqian Peng Mail: pengjiaqian@iie.ac.cn Institution: Institute of Information Engineering, Chinese Academy of Sciences (IIE, CAS) Vulnerability Description A stack overflow vulnerability was found in the Belkin router with firmware version 1.00.33, allowing remote attackers to crash the server. Stack Overflow In the binary: In the router's function, the parameter is directly passed by the attacker. If this data is too long, it causes a stack overflow, allowing control over the to execute arbitrary code. The input is not checked, and is copied to a local variable on the stack, overriding the return address of the function, causing buffer overflow. PoC To exploit the vulnerability, set as , causing the router to crash: Result The target router crashes and cannot provide services correctly and persistently.