More than 840,000 Cisco devices are vulnerable to NSA-related exploit

The vulnerability could allow hackers to extract potentially sensitive information from devices' memory

More than 840,000 Cisco networking devices from around the world are exposed to a vulnerability that's similar to one exploited by a hacking group believed to be linked to the U.S. National Security Agency.

The vulnerability was announced by Cisco last week and it affects the IOS, IOS XE, and IOS XR software that powers many of its networking devices. The flaw allows hackers to remotely extract the contents of a device's memory, which can lead to the exposure of sensitive information.

The vulnerability stems from how the OS processes IKEv1 (Internet Key Exchange version 1) requests. This key exchange protocol is used for VPNs (Virtual Private Networks) and other features that are popular in enterprise environments.

Cisco discovered the vulnerability internally after analyzing an exploit for Cisco PIX firewalls that was leaked last month by a hacking outfit called Shadow Brokers. The exploit was part of a larger set of attack tools that Shadow Brokers claimed are being used by a cyberespionage group known in the security industry as the Equation, believed to be linked to the NSA.

Because other hackers could find the same flaw by analyzing the exploit leaked by Shadow Brokers, Cisco decided to inform its customers about it through a security advisory, even though the company is still working on developing and releasing patches.

Many of the affected IOS, IOS XE, and IOS XR releases don't yet have fixed versions, but Cisco released detection signatures for intrusion prevention systems that could be used to protect networks from potential attacks.

The Shadowserver Foundation, an organization that tracks cybercrime and assists with botnet takedowns, has started an internet-wide scan to find Cisco devices affected by this vulnerability with the goal of reporting them to their owners.

Its latest scan, which ran for two and a half hours on Wednesday, identified devices with 840,681 distinct IP addresses that responded as vulnerable to the probe.

The U.S. is the country with the largest number of vulnerable devices -- 255,606 -- followed by Russia with 42,281, and the United Kingdom with 42,138. Canada, Germany, Japan, Mexico, France, Australia, and China complete the top 10.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags governmentcisco

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Lucian Constantin

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?