HackMD
ip-com-2
vendor:IP-COM
product:M50
version:V15.11.0.33(10768)
type:Remote Command Injection
author:Yifeng Li, Wolin Zhuang;
Vulnerability description
We found an Command Injection vulnerability in IP-COM Technology IP-COM’s M50 routers with firmware which was released recently, allows remote attackers to execute arbitrary OS commands from a crafted GET request.
Remote Command Injection vulnerability
In formSetDebugCfg function, the parameter “pEnable”,"pLevel"and "pModule" is not filter the string delivered by the user, so we can control the pEnable such as “-h%0aping%20x.x.x.x%20-w%2-5%0a ” to attack the OS, and so on, we also can control the pLevel or pModule to attack it.
PoC
Remote Command Injection
We set the value of “pEnable”,"pLevel" or "pModule" as aaa;ping x.x.x.x; and the router will excute ping command.
example.com/action/setDebugCfg?enable=-h
ping x.x.x.x -w%2-5
