Cisco VoIP technology open to DoS attacks

Powered by SC Magazine
 

Cisco Systems said today that its Unified CallManager and Presence Server software contain a number of vulnerabilities that could permit DoS attacks.

In an advisory, the networking giant said CallManager versions 3.3, 4.1, 4.2 and 5.0, in addition to Presence Server version 1.0, are affected by the flaws.

The most severe of the five vulnerabilities rated 4.7 out of 10 on Cisco's vulnerability scoring system. 

Currently there are no workarounds for the bugs, and the company is developing a permanent fix, which will be distributed when it becomes available, according to a Cisco advisory. In the meantime, users should filter traffic as described in the advisory.

Andrew Storms, director of security operations for nCircle, said the flaws are relatively easy to exploit and can result in a loss of telephone service for an enterprise.

"In one instance, simply sending a large number of [internet control] message protocol) packets to a Cisco Unified CallManager can cause the system to crash," he said.

CallManager provides processing for Cisco's  VoIP software solutions, while the Presence Server tracks the usage of those products.

Cisco VoIP technology open to DoS attacks
 
 
 
Top Stories
Westpac hires SAP man as CTO
Creates four new IT lead positions.
 
Qld Transport to replace core registration system
State's biggest citizen info repository set for overhaul.
 
Innovating in the sleepy super industry
There’s little incentive to be on the bleeding edge, so why is Andrew Todd fighting so hard?
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest Comments
Polls
Who do you trust most to protect your private data?







   |   View results
Your bank
  39%
 
Your insurance company
  3%
 
A technology company (Google, Facebook et al)
  7%
 
Your telco, ISP or utility
  7%
 
A retailer (Coles, Woolworths et al)
  2%
 
A Federal Government agency (ATO, Centrelink etc)
  21%
 
An Australian law enforcement agency (AFP, ASIO et al)
  15%
 
A State Government agency (Health dept, etc)
  6%
TOTAL VOTES: 942

Vote