Feeds

Cisco issues network security brown alert

Serious DoS risk

  • alert
  • submit to reddit

Security for virtualized datacentres

Cisco warned last night of a potentially devastating flaw affecting a wide range of routers and switches.

The DoS vulnerability rises from a bug in Cisco's core IOS software and could cause vulnerable devices to stop processing inbound packets on receipt of maliciously constructed IPv4 packets. Normal service would be restored only with a manual reboot.

No alarms will be triggered, nor will the router reload to correct itself. Cisco IOS versions 11.x and 12.x prior to 12.3 are affected by the vulnerability. That means almost everybody is affected.

Indications are that there are no exploits for the bug as yet, however that's no reason for complacency. The flaw is just about as serious a security issue with networking equipment as one could imagine.

Cisco has issued an advisory with workarounds and available fixes, which network admins are strongly advised to promptly review. Security clearing house CERT has also issued an advisory on the problem. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Docker's app containers are coming to Windows Server, says Microsoft
MS chases app deployment speeds already enjoyed by Linux devs
IBM storage revenues sink: 'We are disappointed,' says CEO
Time to put the storage biz up for sale?
'Hmm, why CAN'T I run a water pipe through that rack of media servers?'
Leaving Las Vegas for Armenia kludging and Dubai dune bashing
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
Windows 10: Forget Cloudobile, put Security and Privacy First
But - dammit - It would be insane to say 'don't collect, because NSA'
Symantec backs out of Backup Exec: Plans to can appliance in Jan
Will still provide support to existing customers
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
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.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.