Vulnerability CVE-2008-1923


Published: 2008-04-23   Modified: 2012-02-12

Description:
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.

Type:

CWE-16

(Configuration)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.1/10
6.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Asterisk -> Asterisk appliance developer kit 
Asterisk -> Asterisk business edition 
Asterisk -> Asterisknow 
Asterisk -> Open source 
Asterisk -> S800i 

 References:
http://xforce.iss.net/xforce/xfdb/42049
http://www.altsci.com/concepts/page.php?s=asteri&p=1
http://downloads.digium.com/pub/security/AST-2008-006.html
http://bugs.digium.com/view.php?id=10078

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