dcsimg

CERT Warns of SIP Vulnerabilities

SHARE
Share it on Twitter  
Share it on Facebook  
Share it on Linked in  
Email  
The CERT Coordination Center on Thursday warned of numerous security vulnerabilities in vendor implementations of Session Initiation Protocol (SIP), a signaling protocol for Web conferencing, telephony, presence, events notification and instant messaging.

A security alert from CERT/CC said the vulnerabilities open the doors for an attacker to gain unauthorized privileged access, cause denial-of-service attacks, or cause unstable system behavior.

It warned that text-based SIP protocol, used primarily in Voice-over IP telephony, instant messaging and other presence applications, contained holes in the subset related to invite message. Tests on a variety of popular SIP-enabled products detected "unexpected system behavior and denial-of-services to remote code execution."

The Center recommended that SIP-enabled devices and services be disabled until vendor patches are made available. "As a temporary measure, it may be possible to limit the scope of these vulnerabilities by blocking access to SIP devices and services at the network perimeter," CERT/CC said.

SIP-enabled products from IPTel and Nortel Networks were found to be vulnerable.

Submit a Comment

Loading Comments...