Vigil@nce - Cisco IOS: denial of service via ISDN Q931 SETUP
July 2015 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can send a malicious ISDN Q931 SETUP packet to Cisco
IOS, in order to trigger a denial of service.
Impacted products: IOS Cisco, Cisco Router xx00 Series
Severity: 2/4
Creation date: 18/05/2015
DESCRIPTION OF THE VULNERABILITY
The Cisco IOS product has a service to manage ISDN Q931 SETUP
packets.
However, when a malicious packet is received, a fatal error occurs.
An attacker can therefore send a malicious ISDN Q931 SETUP packet
to Cisco IOS, in order to trigger a denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/Cisco-IOS-denial-of-service-via-ISDN-Q931-SETUP-16925