Feeds

Traffic snags on Juniper router glitch

'Interface flapping'

Securing Web Applications Made Simple and Scalable

Juniper has published a security update designed to fix a bug involving its router software.

The glitch in JUNOS creates problems for networking kit from Juniper in processing Border Gateway Protocol (BGP) traffic. BGP is a core routing protocol of the internet that's widely used by ISPs and others to (put simply) map the best available routes for traffic to flow across the internet.

Left unfixed the flaw means that malformed BGP packets may induce "interface flapping".

Interface flapping means the interface of a network device is left going up and down repeatedly - like a tart's knickers, though on a much accelerated scale. The behaviour, on a large computer network, might be used to exhaust the memory buffers on devices targeted with malformed IPv6 messages. This, in turn, might lead to lost datagrams and general network chaos.

JUNOS releases from 7.3 to 8.4 are potentially vulnerable. Users are urged to upgrade their software to 8.5R1. The bug lends itself to remote exploitation, making it possible that it might form the basis of denial of service attack by hackers against service providers running Juniper kit.

Juniper is a strong number two behind Cisco in the supply of routing kit to large ISPs and telcos. One or two telco techies are already reporting minor glitches that they blame on the problem. A discussion on the issue can be found here. ®

The smart choice: opportunity from uncertainty

More from The Register

next story
BMW's ConnectedDrive falls over, bosses blame upgrade snafu
Traffic flows up 20% as motorway middle lanes miraculously unclog
Putin: Crack Tor for me and I'll make you a MILLIONAIRE
Russian Interior Ministry offers big pile o' roubles for busting pro-privacy browser
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
Roll out the welcome mat to hackers and crackers
Security chap pens guide to bug bounty programs that won't fail like Yahoo!'s
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.