Feeds

HULK DDoS-from-one-computer is easily thwarted, say security pros

Only small, unhardened servers need fear

Top three mobile application threats

Security experts are downplaying the significance of a new denial-of-service (DoS) attack tool.

The HTTP Unbearable Load King (HULK) program was developed by a white-hat network security researcher, who shared it on his blog as a proof-of-concept demonstration of how to effortlessly knock over web servers. Nonetheless there is some concern that others might use it for more nefarious purposes.

Barry Shteiman, the developer of the HULK python script, was able to bring a Microsoft IIS 7 web server test system "to its knees" in under less a minute from a single host using the tool.

Neal Quinn, chief operating officer at DoS defence biz Prolexic, commented: "We’ve tested the tool internally and it is functional. What makes HULK dangerous is the fact that a single malicious actor with a single computer could feasibly take down a small, unhardened web server in minutes."

HULK starts a load of threads to fire off a flood of HTTP GET requests with randomly generated header and URL parameter values. This randomisation makes it more difficult to distinguish the attack from legitimate traffic. However thwarting the tool is not especially difficult, according to Prolexic.

“Fortunately, this is not a very complex DoS tool,” he added. “We were quickly able to dissect its approach and stop it dead in its tracks. It is fairly simple to stop HULK attacks and neutralise this vulnerability with the proper configuration settings and rules.”

Prolexic has added rules to its distributed-DoS mitigation tools to defend against possible attacks that leverage HULK's technique, as explained here. ®

Top three mobile application threats

Whitepapers

Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.