Menu
Cisco discloses three router security problems

Cisco discloses three router security problems

Cisco is warning of three vulnerabilities within its IOS software that could lead to a denial-of-service attack or let an attacker run arbitrary code.

Cisco Systems is warning of three vulnerabilities within its Internet Operating System (IOS) software that could allow a denial-of-service (DOS) attack or let a hacker run arbitrary code on an affected switch router.

The company has published workarounds and issued an updated version of the software.

The three problems are:

-- TCP packet problem: A memory leak in certain versions of IOS could lead to a DOS attack, according to an advisory from the U.S. Computer Emergency Readiness Team. (CERT)

-- IPv6 router header vulnerability: IOS can fail to properly process IPv6 (Internet Protocol version 6) packets with specially-crafted routing heads, which could allow a DOS attack or the running of arbitrary code. IPv6 is a set of specifications that enables more IP addresses to be available on the Internet.

-- Crafted IP option vulnerability: This is a bug concerning how IOS processes IPv4 packets with a specially-crafted IP option, CERT said. It could also enable a DOS attack or the running of arbitrary code.

CERT wrote that all three vulnerabilities could cause a device to reload its OS. In that case, a secondary, sustained DOS condition could be caused since packets won't go through the device.

"Because devices running IOS may transmit traffic for a number of other networks, the secondary impacts of a denial of service may be severe," CERT said.


Follow Us

Join the newsletter!

Error: Please check your email address.

Featured

Slideshows

Kiwi channel closes 2017 with After Hours

Kiwi channel closes 2017 with After Hours

The channel in New Zealand came together to celebrate the close of 2017, as the final After Hours played out in front of a bumper Auckland crowd.

Kiwi channel closes 2017 with After Hours
Meet the top performing HP partners in NZ

Meet the top performing HP partners in NZ

HP honoured leading partners across the channel at the Partner Awards 2017 in New Zealand, recognising excellence across the entire print and personal systems portfolio.

Meet the top performing HP partners in NZ
Tech industry comes together as Lexel celebrates turning 30

Tech industry comes together as Lexel celebrates turning 30

Leading figures within the technology industry across New Zealand came together to celebrate 30 years of success for Lexel Systems, at a milestone birthday occasion at St Matthews in the City.​

Tech industry comes together as Lexel celebrates turning 30
Show Comments