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)

Vendor: Asterisk
Product: Asterisk business edition 
Version:
c1.8.0
c.1.6.1
c.1.0beta7
c.1.0-beta8
c.1.0-beta7
b2.5.1
b.2.5.0
b.2.3.4
b.2.3.3
b.2.3.2
b.2.3.1
b.2.2.1
b.2.2.0
b.1.3.3
b.1.3.2
a
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Product: Open source 
Version:
1.4.9
1.4.8
1.4.7.1
1.4.7
1.4.6
1.4.5
1.4.4
1.4.3
1.4.2
1.4.19
1.4.18.1
1.4.18
1.4.17
1.4.16.2
1.4.16.1
1.4.16
1.4.15
1.4.14
1.4.13
1.4.12.1
1.4.12
1.4.11
1.4.10.1
1.4.10
1.4.1
1.4.0
1.2.9.1
1.2.9
1.2.8
1.2.7.1
1.2.7
1.2.6
1.2.5
1.2.4
1.2.3
1.2.28
1.2.27
1.2.26.2
1.2.26.1
1.2.26
1.2.25
1.2.24
1.2.23
1.2.22
1.2.21.1
1.2.21
1.2.20
1.2.2
1.2.19
1.2.18
1.2.17
1.2.16
1.2.15
1.2.14
1.2.13
1.2.12.1
1.2.12
1.2.11
1.2.10
1.2.1
1.2.0
1.0.9
1.0.8
1.0.7
1.0.6
1.0.5
1.0.4
1.0.3
1.0.2
1.0.12
1.0.11.1
1.0.11
1.0.1
1.0.0
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Product: S800i 
Version:
1.1.0.2
1.1.0.1
1.1.0
1.0.3.3
1.0.3
1.0.2
1.0.1
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Product: Asterisknow 
Version:
1.0.2
1.0.1
1.0
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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

 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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