Vigil@nce - Cisco IOS, IOS XE, Cisco Unified Communications Manager: denial of service via SIP
May 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can send a malicious SIP packet to Cisco IOS, IOS XE,
or Cisco Unified Communications Manager, in order to trigger a
denial of service.
– Impacted products: Cisco Catalyst, IOS Cisco, IOS XE Cisco, Cisco
Router, Cisco CUCM.
– Severity: 2/4.
– Creation date: 24/03/2016.
DESCRIPTION OF THE VULNERABILITY
The Cisco IOS, IOS XE, or Cisco Unified Communications Manager
product has a service to manage received SIP packets.
However, when a malicious packet is received, a memory leak
occurs, which leads to a fatal error.
An attacker can therefore send a malicious SIP packet to Cisco
IOS, IOS XE, or Cisco Unified Communications Manager, in order to
trigger a denial of service.
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