Feeds

Cisco ships six fixes for DoS bugs

Happy Thursday, sysadmins

Boost IT visibility and business value

Sysadmins can get themselves ready for a busy Cisco “patch Thursday”, after the Borg lobbed six patches out the door to deal with a range of denial-of-service (DoS) vulnerabilities in IOS.

The vulnerabilities – see here for a single list – are all scored a CVS base score better than 7 as being remotely exploitable without authentication. Most boil down to how various bits of IOS handle (or don't handle) malformed packets.

Taking them one-by-one:

  • SIP DoS in IOS – Some SIP messages, even though they'd be considered “well-formed”, can trigger a device reload. IOS XE Software release 3.10.0S and 3.10.1S are affected and a fix is available.
  • Key exchange module – the Internet Key Exchange module, IKEv2, can be crashed with a malformed packet. Customers are advised to upgrade to a non-vulnerable version of IOS XE.
  • IOS NAT – Malformed DNS packets can crash the NAT in various IOS versions. Fixed versions are available.
  • IOS SSL VPNs – the SSL subsystem in IOS is vulnerable to crafted HTML requests “designed to consume memory to an affected device”. Various IOS 15.1, 15.2, 15.3 and 15.4 releases are affected, with fixes available.
  • IOS and IOS XE IPv6 stack – can be crashed with crafted IPv6 packets, with fixes available.
  • 7600 Switch Processor with 10 Gbps Ethernet uplinks – crafted IP packets can crash the Kailash FPGA in versions prior to 2.6, with fixes available.

Happy network patch day, network admins!®

The essential guide to IT transformation

More from The Register

next story
The Return of BSOD: Does ANYONE trust Microsoft patches?
Sysadmins, you're either fighting fires or seen as incompetents now
Microsoft: Azure isn't ready for biz-critical apps … yet
Microsoft will move its own IT to the cloud to avoid $200m server bill
Oracle reveals 32-core, 10 BEEELLION-transistor SPARC M7
New chip scales to 1024 cores, 8192 threads 64 TB RAM, at speeds over 3.6GHz
Docker kicks KVM's butt in IBM tests
Big Blue finds containers are speedy, but may not have much room to improve
US regulators OK sale of IBM's x86 server biz to Lenovo
Now all that remains is for gov't offices to ban the boxes
Gartner's Special Report: Should you believe the hype?
Enough hot air to carry a balloon to the Moon
Flash could be CHEAPER than SAS DISK? Come off it, NetApp
Stats analysis reckons we'll hit that point in just three years
Nimble's latest mutants GORGE themselves on unlucky forerunners
Crossing Sandy Bridges without stopping for breath
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
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.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.