Cisco Warns Of Multiple IOS Vulnerabilities - InformationWeek

InformationWeek is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

IoT
IoT
Software // Enterprise Applications

Cisco Warns Of Multiple IOS Vulnerabilities

Cisco Systems announced on Tuesday that there are several vulnerabilities in the Intrusion Prevention System feature set of its Cisco IOS.

Cisco Systems announced on Tuesday that there are several vulnerabilities in the Intrusion Prevention System (IPS) feature set of its Internetwork Operating System (IOS).

Fragmented IP packets may be used to evade signature inspection, according to a warning on Cisco's Web site. It also warned that the IPS signatures using the regular expression feature of the Atomic.TCP signature engine may cause a router to crash, resulting in a denial of service.

Cisco's IOS is software used in many of its routers and network switches.

Four versions of Cisco IOS are vulnerable to the fragmented packet evasion vulnerability: Version 12.4, 12.4T, 12.4XE, and at least one release of 12.3T. Many of the IOS version releases are vulnerable to the Atomic.TCP regular expression denial of service flaw.

An alert on the SANS Institute's Internet Storm Center recommends an upgrade of the IOS version.

We welcome your comments on this topic on our social media channels, or [contact us directly] with questions about the site.
Comment  | 
Print  | 
More Insights
InformationWeek Is Getting an Upgrade!

Find out more about our plans to improve the look, functionality, and performance of the InformationWeek site in the coming months.

Slideshows
11 Things IT Professionals Wish They Knew Earlier in Their Careers
Lisa Morgan, Freelance Writer,  4/6/2021
News
Time to Shift Your Job Search Out of Neutral
Jessica Davis, Senior Editor, Enterprise Apps,  3/31/2021
Commentary
Does Identity Hinder Hybrid-Cloud and Multi-Cloud Adoption?
Joao-Pierre S. Ruth, Senior Writer,  4/1/2021
White Papers
Register for InformationWeek Newsletters
Video
Current Issue
Successful Strategies for Digital Transformation
Download this report to learn about the latest technologies and best practices or ensuring a successful transition from outdated business transformation tactics.
Slideshows
Flash Poll