Feeds

Vulnerability leaves Cisco small biz routers wide open to attack

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

Boost IT visibility and business value

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 device, 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. ®

Gartner critical capabilities for enterprise endpoint backup

More from The Register

next story
Microsoft: We plan to CLEAN UP this here Windows Store town
Paid-for apps that provide free downloads? Really
Snowden on NSA's MonsterMind TERROR: It may trigger cyberwar
Plus: Syria's internet going down? That was a US cock-up
Who needs hackers? 'Password1' opens a third of all biz doors
GPU-powered pen test yields more bad news about defences and passwords
e-Borders fiasco: Brits stung for £224m after US IT giant sues UK govt
Defeat to Raytheon branded 'catastrophic result'
Hear ye, young cyber warriors of the realm: GCHQ wants you
Get involved, get a job and then never discuss work ever again
Chinese hackers spied on investigators of Flight MH370 - report
Classified data on flight's disappearance pinched
Microsoft cries UNINSTALL in the wake of Blue Screens of Death™
Cache crash causes contained choloric calamity
prev story

Whitepapers

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.
7 Elements of Radically Simple OS Migration
Avoid the typical headaches of OS migration during your next project by learning about 7 elements of radically simple OS migration.
BYOD's dark side: Data protection
An endpoint data protection solution that adds value to the user and the organization so it can protect itself from data loss as well as leverage corporate data.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?