Description
The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.
References (11)
Core 11
Core References
Broken Link, Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/24950
Third Party Advisory vendor-advisory
x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-200802-11.xml
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/29051
Issue Tracking, Patch x_refsource_confirm
http://bugs.gentoo.org/show_bug.cgi?id=185713
Broken Link, Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id?1018472
Broken Link vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2007/2701
Broken Link, Third Party Advisory, VDB Entry mailing-list
x_refsource_bugtraq
http://www.securityfocus.com/archive/1/475069/100/0/threaded
Broken Link third-party-advisory
x_refsource_sreason
http://securityreason.com/securityalert/2960
Broken Link, Patch x_refsource_confirm
http://ftp.digium.com/pub/asa/ASA-2007-018.pdf
Broken Link vdb-entry
x_refsource_osvdb
http://osvdb.org/38197
Broken Link, Patch, Vendor Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/26274
Scores
CVSS v3
7.5
EPSS
0.0594
EPSS Percentile
92.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-772
Status
published
Products (2)
digium/asterisk
1.2.20 - 1.2.23
digium/asterisk_appliance_developer_kit
< 0.6.0
Published
Jul 31, 2007
Tracked Since
Feb 18, 2026