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A vulnerability in a Time Warner cable modem and Wi-Fi router deployed to 65,000 customers would allow a hacker to remotely access the device’s administrative menu over the internet, and potentially change the settings to intercept traffic, according to a blogger who discovered the issue.Time Warner acknowledged the problem to Threat Level on Tuesday, and says it’s in the process of testing replacement firmware code from the router manufacturer, which it plans to push out to customers soon.“We were aware of the problem last week and have been working on it since,” said Time Warner spokesman Alex Dudley.The vulnerability lies with Time Warner’s SMC8014 series cable modem/Wi-Fi router combo, made by SMC. The device is one of several options Time Warner offers to customers who don’t want to install their own modem and router to use with the company’s broadband service. The device is installed with default configurations, which customers can alter only slightly through its built-in web server. The most customers can do through this page is add a list of URLs they want their router to block.But blogger David Chen, writing at chenosaurus.com, recently discovered he could easily gain remote access to an administrative page served by the router that would allow him greater control of the device.Chen, founder of a software startup called Pip.io, said he was trying to help a friend change the settings on his cable modem and discovered that Time Warner had hidden administrative functions from its customers with Javascript code. By simply disabling Javascript in his browser, he was able to see those functions, which included a tool to dump the router’s configuration file.That file, it turned out, included the administrative login and password in cleartext. Chen investigated and found the same login and password could access the admin panels for every router in the SMC8014 series on Time Warner’s network — a grave vulnerability, given that the routers also expose their web interfaces to the public-facing internet.
