All the latest UK technology news, reviews and analysis

Cisco patch plugs password security flaws

08 Nov 2012
Cisco Systems campus sign

Cisco has issued a patch to address a security flaw which could allow an attacker to bypass password protections in its Access Control System (ACS) platform.

The company said that the update would install a revision to the ACS platform, specifically the handling of the Tacas+ security protocol.

Cisco said that the flaw would potentially allow an attacker to use a specific set of characters in combination with a valid account name to cause a crash which lets the attacker bypass the authentication process and access the target system.

The company noted that while an attacker would need a valid user name, the technique could be used on any system with the vulnerable component.

Cisco is making the patch available as a free update. Both the company and third-party security researchers are advising administrators to install the fix as soon as possible.

"Exploitation is likely very easy," said Sans researcher Mark Baggett.

"If you are using Cisco ACS for authentication you should probably take note of this announcement."

The update is the latest in what is shaping up to be a busy month for administrators. Earlier in the week Adobe issued an update to address multiple flaws in its Flash Player media platform. Google also posted updates for its Chrome browser.

Microsoft is also slated to issue updates for its products next week when the company posts its monthly security update.

  • Comment  
  • Tweet  
  • Google plus  
  • Facebook  
  • LinkedIn  
  • Stumble Upon  
Shaun Nichols

Shaun Nichols is the US correspondent for He has been with the company since 2006, originally joining as a news intern at the site's San Francisco offices.

More on Security
What do you think?
blog comments powered by Disqus

Windows 10 poll

What are your first impressions of Windows 10?

Popular Threads

Powered by Disqus
V3 Sungard roundtable event - Cloud computing security reliability and scalability discussion

CIOs debate how to overhaul businesses for the digital era

V3 hosts roundtable with Sungard Availability Services

Updating your subscription status Loading

Get the latest news (daily or weekly) direct to your inbox with V3 newsletters.

newsletter sign-up button

Getting started with virtualisation

Virtualisation can help you reduce costs, improve application availability, and simplify IT
management. However, getting started can be challenging


Converting big data and analytics insights into results

Successful leaders are infusing analytics throughout their organisations to drive smarter decisions, enable faster actions and optimise outcomes

IT Development Manager

This is a unique and senior opportunity to establish...

IT Infrastructure Manager

Closing Date: 13/10/2014 Working within a diverse and...

Business Systems Analyst

This role has arisen in a major international food manufacturing...

Service Delivery Manager

Imagine a place that’s literally bursting with possibilities...
To send to more than one email address, simply separate each address with a comma.