Feeds

Phlashing attack thrashes embedded systems

Router bricking risk

Providing a secure and efficient Helpdesk

A security attack that damages embedded systems beyond repair was demonstrated for the first time in London on Wednesday.

The cyber-assault thrashes systems by abusing firmware update mechanisms. If successful, the so-called phlashing attack would force victims to replace systems.

The attack was demonstrated by Rich Smith, head of research for offensive technologies and threats at HP Systems Security Lab, at the EUSecWest security conference in London on Wednesday. Smith told Dark Reading that such as "permanent denial of service" attack could be carried out remotely over the internet.

Theoretically the attack could be both more effective (as the damage caused would be harder to recover from) and cheaper than conventional denial of service attacks, which typically rely on hackers paying to rent control of a network of compromised PCs.

The PhlashDance approach relies on exploiting frequently unpatched vulnerabilities in embedded systems, such as flaws in remote management interfaces, to get access to a system. That alone wouldn't be enough, but because firmware updates are seldom secured, the possibility exists of making an update that effectively trashes a system.

Smith is calling on vendors to authenticate the mechanism as one way of defending against such attacks. He is demonstrating a tool to search for vulnerabilities in firmware, as well as an attack mechanism to corrupt vulnerable firmware at EUSecWest.

There's no record of such an attack even occurring and other security watchers are sceptical over whether crackers could make money - the main motive for denial of service attacks - from such an approach. Both H D Moore of Metapolit fame and the Hack a Day blog reckon that exploiting vulnerabilities to plant malware in firmware is a far more insidious and dangerous type of attack than simply destroying systems.

Another presentation at EuSecWest will demonstrate a proof of concept rootkit capable of covertly monitoring and controlling Cisco routers. The Cisco IOS rootkit software was developed by Sebastian Muniz, of Core Security. ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
SMASH the Bash bug! Apple and Red Hat scramble for patch batches
'Applying multiple security updates is extremely difficult'
Shellshock: 'Larger scale attack' on its way, warn securo-bods
Not just web servers under threat - though TENS of THOUSANDS have been hit
Apple's new iPhone 6 vulnerable to last year's TouchID fingerprint hack
But unsophisticated thieves need not attempt this trick
Oracle SHELLSHOCKER - data titan lists unpatchables
Database kingpin lists 32 products that can't be patched (yet) as GNU fixes second vuln
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Researchers tell black hats: 'YOU'RE SOOO PREDICTABLE'
Want to register that domain? We're way ahead of you.
Stunned by Shellshock Bash bug? Patch all you can – or be punished
UK data watchdog rolls up its sleeves, polishes truncheon
prev story

Whitepapers

A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.