Description
diag_tool.cgi on DASAN H660RM GPON routers with firmware 1.03-0022 lacks any authorization check, which allows remote attackers to run a ping command via a GET request to enumerate LAN devices or crash the router with a DoS attack.
References
- 20190326 Multiple vulnerabilities in DASAN H660RM GPON router firmware mailing-list
- http://packetstormsecurity.com/files/152232/DASAN-H660RM-Information-Disclosure-Hardcoded-Key.html
- https://blog.burghardt.pl/2019/03/diag_tool-cgi-on-dasan-h660rm-devices-with-firmware-1-03-0022-allows-spawning-ping-processes-without-any-authorization-leading-to-information-disclosure-and-dos-attacks/