Cisco patches serious flaws in router and conferencing server software

The patches fix flaws in Cisco IOS, IOS XR, ASR 5000, WebEx Meetings Server and Cisco Meeting Server

Cisco Systems released patches this week for several vulnerabilities in its IOS software for networking devices and the Cisco and WebEx conferencing servers.

The most serious vulnerability affects the Cisco IOS XR software for the Cisco Network Convergence System (NCS) 6000 Series Routers. It can lead to a denial-of-service condition, leaving affected devices in a nonoperational state.

Unauthenticated, remote attackers can exploit the vulnerability by initiating a number of management connections to an affected device over the Secure Shell (SSH), Secure Copy Protocol (SCP) or Secure FTP (SFTP).

Because it can affect the availability of a critical piece of equipment, like a router, Cisco has rated this vulnerability as high severity. There is no workaround and customers are advised to install the newly released patches.

Another flaw fixed in the Cisco IOS XR software could allow attackers to execute arbitrary commands on the operating system with root privileges. This vulnerability affects IOS XR Software Release 6.0.1.BASE and was rated medium severity because the attacker needs to be authenticated as a local user.

A denial-of-service vulnerability was also fixed in the Cisco IOS Software. It can be used to crash devices running affected versions of the software by sending specially crafted Link Layer Discovery Protocol (LLDP) packets to them. Exploitation doesn't require authentication, but requires the attacker to be in a position to send LLDP packets.

The firmware of Cisco ASR 5000 Series carrier-class platform which is used in 3G and LTE networks, received an update that fixes an insecure SNMP (Simple Network Management Protocol) implementation. The weakness would have allowed attackers to read and modify the device configuration.

Cisco's meeting servers were also the focus of this week's patch releases. One vulnerability in the HTTP interface of the Cisco Meeting Server, formerly Acano Conferencing Server, could have allowed attackers to launch persistent cross-site scripting (XSS) attacks against users of the interface.

Attackers could exploit this flaw by tricking users to click on maliciously crafted links and could then execute rogue JavaScript code in their browsers in the context of the Cisco Meeting Server interface. This could be used to steal authentication cookies or to force them to perform unauthorized actions.

Two XSS vulnerabilities were also fixed in the Cisco WebEx Meetings Server version 2.6, one in its administration interface and one in the user interface. Both could be exploited by tricking users to visit specially crafted links and could lead to further attacks.

The Cisco WebEx Meetings Server also received patches for an SQL injection vulnerability that could allow attackers to extract information from its database and for a command injection flaw.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
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

Father’s Day Gift Guide

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Armand Abogado

HP OfficeJet 250 Mobile Printer

Wireless printing from my iPhone was also a handy feature, the whole experience was quick and seamless with no setup requirements - accessed through the default iOS printing menu options.

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?