Feeds

Denial of service warning for network security tool

Give it some stick

  • alert
  • submit to reddit

Security for virtualized datacentres

A security firm has issued an alert about a cracker tool which can be used to mount a denial of service attack (DoS) against its own products.

Internet Security Systems is warning about 'Stick' which can reportedly reduce the performance of, or deny service to, many commercial intrusion detection products, including ISS' RealSecure Network Sensor 5.0.

The tool, which has not yet openly available on the Internet, works by flooding intrusion detection systems (IDS) with more information than can be processed.

Stick uses the very straightforward technique of firing numerous attacks from random source IP addresses to purposely trigger IDS events. This technique has been seen before but the implementation used by Stick is far more effective than previous cracker tools which uses similar tricks.

In an alert about the problem ISS admitted: "The IDS system will attempt to keep up with the new flood of events, but if incoming events cross the IDS detection threshold, a DoS might result."

ISS X-Force has verified the existence of a vulnerability in the Windows NT and Windows 2000 versions of RealSecure Network Sensor 5.0 which leaves the product susceptible to an attack by Stick. On both Windows platforms, the event channel becomes congested during the duration of the attack, although the product doesn't actually crash it is thus rendered ineffective.

The Solaris version of Network Sensor is not thought to be affected by the issue.

ISS has developed two fixes for RealSecure Network Sensor that will limit the risk of a Stick attack, and has made more information on the issue available here. ®

Related stories

Different approach to intrusion detection touted
Network Associates weathers DoS attack
Microsoft struts into Net security market

Beginner's guide to SSL certificates

More from The Register

next story
FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for
It's on by default – didn't you read the small print?
Edward who? GCHQ boss dodges Snowden topic during last speech
UK spies would rather 'walk' than do 'mass surveillance'
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
NOT OK GOOGLE: Android images can conceal code
It's been fixed, but hordes won't have applied the upgrade
Apple grapple: Congress kills FBI's Cupertino crypto kybosh plan
Encryption would lead us all into a 'dark place', claim G-Men
DEATH by PowerPoint: Microsoft warns of 0-day attack hidden in slides
Might put out patch in update, might chuck it out sooner
'LulzSec leader Aush0k' found to be naughty boy not worthy of jail
15 months home detention leaves egg on feds' faces as they grab for more power
prev story

Whitepapers

Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
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.
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?
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.