Unfortunately command injections like the NETGEAR one Zachary Cutlip and I both came across are all too common in embedded systems. Similar to NETGEAR and Linksys having commands injected when running ping, I have also noticed that DD-WRT v24-sp2 is prone to command injection from specially crafted configuration values containing shell meta-characters. A remote attacker can potentially use CSRF from an authenticated client to remotely execute commands on the router as the root user. This is also an easy way to DoS a system since you could potentially force it into a reboot loop. I reported this in the projects bug tracker almost a year ago but it doesn't look like this is actively maintained so I figured I may as well share with the list now in case anyone is running this firmware. This is tracked as CVE-2012-6297. There are a lot of consumer routers with these types of issues (working with several vendors on this stuff at the moment) so I have provided this list of generic tips for keeping consumer/SOHO routers secure: http://www.tripwire.com/state-of-security/vulnerability-management/five-tips-securing-soho-routers/ I would also love to hear what other suggestions people have towards minimizing the risk of someone popping a shell on your router. Regards, Craig http://secur3.us/pub_key.asc
