Feeds

Network security vulns keep sysadmins busy

Can't parse that

Choosing a cloud hosting partner with confidence

Sysadmins can look forward to clocking some overtime this week after Cisco warned of flaws in how its core operating system handles malformed Secure Sockets Layer (SSL) traffic.

Several types of SSL messages (such as ClientHello and ChangeCipherSpec), when malformed, can crash vulnerable appliances running IOS, which are configured to accept SSL protocol packets. The scope of the vulnerability is confined to denial of service attacks. There's no code execution or snooping risk.

Exploitation would involving sending malformed packets during the SSL protocol exchange with the vulnerable devices, such as SSL VPNs or routers, to potentially carry out a sustained denial of service attack.

Although the vulnerability could be more severe, a wide range of devices are affected. All of which adds up to plenty of work for the BOFHs of this world in applying software updates or workarounds as explained in a Cisco advisory here.

In other network security news, flaws in how content scanning systems parse Unicode encoded traffic have been unearthed. The shortcomings, which potentially affect a wide range of products from multiple vendors, create a means to slip malicious HTTP traffic past content scanning systems such as intrusion prevention systems.

Kit from 3Com, Cisco and EMC are known to be vulnerable while a large number of other vendors of high-tech burglar alarms are assessing the scope of the problem. Users of Snort, the popular open-source intrusion detection software package, are known to be in the clear. ®

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?
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
'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
Kill off SSL 3.0 NOW: HTTPS savaged by vicious POODLE
Pull it out ASAP, it is SWISS CHEESE
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
China is ALREADY spying on Apple iCloud users, watchdog claims
Attack harvests users' info at iPhone 6 launch
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.
Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
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.