Feeds

Cisco plugs IP telephony and router security holes

A patch in time...

Security for virtualized datacentres

Cisco has fixed updates to address flaws in its IP telephony software and router hardware that create a means to conduct denial of service attacks against vulnerable systems. Neither flaw is particularly easy to exploit but both merit attention.

Security weaknesses in various flavours of Cisco CallManager 3.x and 4.x create a means to consume a large amount of memory and CPU resources via multiple open connections to port 2000. A separate flaw in the processing of connections to ports 2001, 2002, and 7727 might force Cisco CallManager to reboot.

Cisco has released updates as explained in its advisory here. A separate update, also issued this week, resolves a privilege escalation flaw in CallManager.

Meanwhile flaws have emerged in Cisco's core IOS software that might be exploited by hackers to crash vulnerable systems running Cisco IOS 12.x. The flaw stems from errors in handling the SGBP protocol (Stack Group Bidding Protocol).

As a result malicious UDP datagrams sent to port 9900 can cause routers to become tied up, triggering a hardware reset. The vuln affects Cisco network devices running vulnerable versions of IOS providing support for the SGBP protocol has been enabled, which won't always be the case.

Cisco has released an advisory which explains how users can get updates. ®

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.