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CVE-2008-1923

Published: 23 April 2008

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.

Notes

AuthorNote
mdeslaur
fix was incomplete, see CVE-2008-1897

Priority

Medium

Status

Package Release Status
asterisk
Launchpad, Ubuntu, Debian
dapper Ignored
(end of life)
feisty Ignored
(end of life, was needed)
gutsy Ignored
(end of life, was needed)
hardy Not vulnerable
(1:1.4.17~dfsg-2ubuntu1)
intrepid Not vulnerable
(1:1.4.21.2~dfsg-1ubuntu3)
jaunty Not vulnerable
(1:1.4.21.2~dfsg-3ubuntu2)
karmic Not vulnerable
(1:1.4.21.2~dfsg-3ubuntu2)
upstream Needs triage

Patches:
upstream: http://lists.digium.com/pipermail/asterisk-commits/2007-May/013260.html