Feeds

Traffic snags on Juniper router glitch

'Interface flapping'

Using blade systems to cut costs and sharpen efficiencies

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
Yorkshire cops fail to grasp principle behind BT Fon Wi-Fi network
'Prevent people that are passing by to hook up to your network', pleads plod
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
NEW, SINISTER web tracking tech fingerprints your computer by making it draw
Have you been on YouPorn lately, perhaps? White House website?
LibreSSL RNG bug fix: What's all the forking fuss about, ask devs
Blow to bit-spitter 'tis but a flesh wound, claim team
Black Hat anti-Tor talk smashed by lawyers' wrecking ball
Unmasking hidden users is too hot for Carnegie-Mellon
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
Own a Cisco modem or wireless gateway? It might be owned by someone else, too
Remote code exec in HTTP server hands kit to bad guys
prev story

Whitepapers

Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
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.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.