The Aastra 9112i SIP Phone with firmware 1.4.0.1048 and boot version 1.1.0.10 allows remote attackers to (1) cause a denial of service (device freeze) via a malformed SIP message of a certain length or (2) cause a denial of service (continuous ring) via a malformed SIP message of a certain other length.
Published 2007-06-22 · Modified