CVE-2008-1923 - Expansionism Pitches


The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679 when configured to allow unauthenticated calls sends \early audio\ to an unverified source IP address of a NEW message which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.