“NSA Laughs at PCs, Prefers Hacking Routers and Switches”

[U]nlike conventional cybercriminals, the agency is less interested in hacking PCs and Macs. Instead, America’s spooks have their eyes on the internet routers and switches that form the basic infrastructure of the net, and are largely overlooked as security vulnerabilities.

…The NSA’s focus on routers highlights an often-overlooked attack vector with huge advantages for the intruder, says Marc Maiffret, chief technology officer at security firm Beyond Trust….

…“No one updates their routers,” he says. “If you think people are bad about patching Windows and Linux (which they are) then they are … horrible about updating their networking gear because it is too critical, and usually they don’t have redundancy to be able to do it properly.”

He also notes that routers don’t have security software that can help detect a breach.

“The challenge [with desktop systems] is that while antivirus don’t work well on your desktop, they at least do something [to detect attacks],” he says. “But you don’t even have an integrity check for the most part on routers and other such devices like IP cameras.”

Hijacking routers and switches could allow the NSA to do more than just eavesdrop on all the communications crossing that equipment. It would also let them bring down networks or prevent certain communication, such as military orders, from getting through, though the Post story doesn’t report any such activities. With control of routers, the NSA could re-route traffic to a different location, or intelligence agencies could alter it for disinformation campaigns, such as planting information that would have a detrimental political effect or altering orders to re-route troops or supplies in a military operation.

According to the budget document, the CIA’s Tailored Access Programs and NSA’s software engineers possess “templates” for breaking into common brands and models of routers, switches and firewalls.

The article doesn’t say it, but this would likely involve pre-written scripts or backdoor tools and root kits for attacking known but unpatched vulnerabilities in these systems, as well as for attacking zero-day vulnerabilities that are yet unknown to the vendor and customers.

“[Router software is] just an operating system and can be hacked just as Windows or Linux would be hacked,” Maiffret says….

…A handful of security researchers have uncovered vulnerabilities in routers in recent years that could be used to do the kind of hacking described in the budget document….

…Lynn had planned to discuss the vulnerability at the Black Hat security conference in Las Vegas, until Cisco intervened and forced him to pull the talk under threat of a lawsuit.

But if Lynn knew about the vulnerability, there were likely others who did as well — including intelligence agencies and criminal hackers.

Source code for Cisco’s IOS has been stolen at least twice, either by entities who were interested in studying the software to gain a competitive advantage or to uncover vulnerabilities that would allow someone to hack or control them.

Other researchers have uncovered different vulnerabilities in other Cisco routers that are commonly used in small businesses and home offices….

…In 2008, a researcher at Core Security Technologies developed a root kit for the Cisco IOS that was designed to give an attacker a persistent foothold on a Cisco router while remaining undetected.

According to the Post story, the NSA designs most of the offensive tools it uses in its Genie operation, but it spent $25.1 million in one year for “additional covert purchases of software vulnerabilities” from private malware vendors who operate on the grey market — closed markets that peddle vulnerabilities and exploits to law enforcement and intelligence agencies, as opposed to the black market that sells them to cyber criminals.

The price of vulnerabilities and exploits varies, depending on a number of factors. Vulnerabilities and exploits can sell for anywhere from $50,000 to more than a million, depending on the exclusivity of the purchase — some vulnerabilities are sold to multiple parties with the understanding that others are using it as well — and their ubiquity. A vulnerability that exists in multiple versions of an operating system is more valuable than a vulnerability that exists in just one version. A class of vulnerability that crosses multiple browser brands is also more valuable than a single vulnerability that just affects the Safari browser or Chrome….

…Once a vulnerability becomes known to the software maker and is patched, it loses a lot of its value. But because many users and administrators do not patch their systems, some vulnerabilities can be used effectively for years, even after a patch is available…

…Routers in particular often remain unpatched because system administrators don’t think they will be targeted and because administrators are concerned about network outages that could occur while the patch is applied or if the patch is faulty.

via Wired.com.

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