Feeds

Vulnerability leaves Cisco small biz routers wide open to attack

Exploit code available, but no patch until end of the month

High performance access to file storage

A number of Cisco networking products for small businesses contain critical vulnerabilities that could allow attackers to gain root access to the equipment, the networking giant has warned.

The affected products include the WAP4410N Wireless-N Access Point, the WRVS4400N Wireless-N Gigabit Security Router, and the RVS4000 4-port Gigabit Security Router, Cisco said in a security advisory issued late on Friday.

Note that these products are all branded Cisco and not Linksys. Cisco marketed consumer and small business networking equipment under the Linksys brand for ten years beginning in 2003, but sold the division to Belkin in January 2013.

According to Cisco's advisory, the vulnerabilities in all three products stem from an undocumented test interface that listens on TCP port 32764 on the affected devices.

Attackers can potentially exploit that interface to execute arbitrary commands on the underlying operating system, the advisory explains. By doing so, Cisco adds, they can potentially gain the administrator password to the advice, which would then allow them to execute commands with elevated privileges.

The most obvious use for such an exploit would be to trigger a denial-of-service attack on a network by freezing up the router or resetting it to its factory default configuration.

Cisco has ranked the vulnerabilities at 10.0 on the Common Vulnerability Scoring System (CVSS) – the highest possible score, which indicates a critical flaw.

Worst of all, public exploit code for the vulnerabilities is already available, although Cisco says it has not seen any widespread attacks based on the exploit so far.

There are no known workarounds for the vulnerabilities and Cisco has not released any patches as yet, although it promises it will ship fixes for all three routers by the end of January 2014. Until then, El Reg advises users of the affected products to cross their fingers. ®

High performance access to file storage

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Parent gabfest Mumsnet hit by SSL bug: My heart bleeds, grins hacker
Natter-board tells middle-class Britain to purée its passwords
Web data BLEEDOUT: Users to feel the pain as Heartbleed bug revealed
Vendors and ISPs have work to do updating firmware - if it's possible to fix this
OpenSSL Heartbleed: Bloody nose for open-source bleeding hearts
Bloke behind the cockup says not enough people are helping crucial crypto project
One year on: diplomatic fail as Chinese APT gangs get back to work
Mandiant says past 12 months shows Beijing won't call off its hackers
Call of Duty 'fragged using OpenSSL's Heartbleed exploit'
So it begins ... or maybe not, says one analyst
German space centre endures cyber attack
Chinese code retrieved but NSA hack not ruled out
Experian subsidiary faces MEGA-PROBE for 'selling consumer data to fraudster'
US attorneys general roll up sleeves, snap on gloves
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
HP ArcSight ESM solution helps Finansbank
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mobile application security study
Download this report to see the alarming realities regarding the sheer number of applications vulnerable to attack, as well as the most common and easily addressable vulnerability errors.