CVE-2008-1923: High severity digium asterisk appliance developer kit vulnerability
Published Apr 23, 2008
·Updated
The IAX2 channel driver (chaniax2) 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.
Affected Software
137 affected components
Asterisk Asterisk Appliance Developer Kit
Asterisk Asterisk Business Edition<=b2.5.1
Asterisk Asterisk Business Edition<=c1.8.0
Asterisk Asterisk Business Edition=a
Asterisk Asterisk Business Edition=b.1.3.2
Asterisk Asterisk Business Edition=b.1.3.3
Asterisk Asterisk Business Edition=b.2.2.0
Asterisk Asterisk Business Edition=b.2.2.1
Asterisk Asterisk Business Edition=b.2.3.1
Asterisk Asterisk Business Edition=b.2.3.2
Asterisk Asterisk Business Edition=b.2.3.3
Asterisk Asterisk Business Edition=b.2.3.4
Asterisk Asterisk Business Edition=b.2.5.0
Asterisk Asterisk Business Edition=c.1.0-beta7
Asterisk Asterisk Business Edition=c.1.0-beta8
Asterisk Asterisk Business Edition=c.1.0beta7
Asterisk Asterisk Business Edition=c.1.6.1
Asterisk AsteriskNOW<=1.0.2
Asterisk AsteriskNOW=1.0
Asterisk AsteriskNOW=1.0.1
Asterisk Open Source=1.0
Asterisk Open Source=1.0.0
Asterisk Open Source=1.0.1
Asterisk Open Source=1.0.2
Asterisk Open Source=1.0.3
Asterisk Open Source=1.0.4
Asterisk Open Source=1.0.5
Asterisk Open Source=1.0.6
Asterisk Open Source=1.0.7
Asterisk Open Source=1.0.8
Asterisk Open Source=1.0.9
Asterisk Open Source=1.0.11
Asterisk Open Source=1.0.11.1
Asterisk Open Source=1.0.12
Asterisk Open Source=1.2.0
Asterisk Open Source=1.2.1
Asterisk Open Source=1.2.2
Asterisk Open Source=1.2.3
Asterisk Open Source=1.2.3-netsec
Asterisk Open Source=1.2.4
Asterisk Open Source=1.2.4-netsec
Asterisk Open Source=1.2.5
Asterisk Open Source=1.2.5-netsec
Asterisk Open Source=1.2.6
Asterisk Open Source=1.2.6-netsec
Asterisk Open Source=1.2.7
Asterisk Open Source=1.2.7-netsec
Asterisk Open Source=1.2.7.1
Asterisk Open Source=1.2.7.1-netsec
Asterisk Open Source=1.2.8
Asterisk Open Source=1.2.8-netsec
Asterisk Open Source=1.2.9
Asterisk Open Source=1.2.9.1
Asterisk Open Source=1.2.9.1-netsec
Asterisk Open Source=1.2.10
Asterisk Open Source=1.2.10-netsec
Asterisk Open Source=1.2.11
Asterisk Open Source=1.2.11-netsec
Asterisk Open Source=1.2.12
Asterisk Open Source=1.2.12-netsec
Asterisk Open Source=1.2.12.1
Asterisk Open Source=1.2.13
Asterisk Open Source=1.2.13-netsec
Asterisk Open Source=1.2.14
Asterisk Open Source=1.2.14-netsec
Asterisk Open Source=1.2.15
Asterisk Open Source=1.2.15-netsec
Asterisk Open Source=1.2.16
Asterisk Open Source=1.2.16-netsec
Asterisk Open Source=1.2.17
Asterisk Open Source=1.2.17-netsec
Asterisk Open Source=1.2.18
Asterisk Open Source=1.2.18-netsec
Asterisk Open Source=1.2.19
Asterisk Open Source=1.2.19-netsec
Asterisk Open Source=1.2.20
Asterisk Open Source=1.2.20-netsec
Asterisk Open Source=1.2.21
Asterisk Open Source=1.2.21-netsec
Asterisk Open Source=1.2.21.1
Asterisk Open Source=1.2.21.1-netsec
Asterisk Open Source=1.2.22
Asterisk Open Source=1.2.22-netsec
Asterisk Open Source=1.2.23
Asterisk Open Source=1.2.23-netsec
Asterisk Open Source=1.2.24
Asterisk Open Source=1.2.24-netsec
Asterisk Open Source=1.2.25
Asterisk Open Source=1.2.25-netsec
Asterisk Open Source=1.2.26
Asterisk Open Source=1.2.26-netsec
Asterisk Open Source=1.2.26.1
Asterisk Open Source=1.2.26.1-netsec
Asterisk Open Source=1.2.26.2
Asterisk Open Source=1.2.26.2-netsec
Asterisk Open Source=1.2.27
Asterisk Open Source=1.2.28
Asterisk Open Source=1.4.0
Asterisk Open Source=1.4.0-beta2
Asterisk Open Source=1.4.0-beta3
Asterisk Open Source=1.4.0-beta4
Asterisk Open Source=1.4.1
Asterisk Open Source=1.4.2
Asterisk Open Source=1.4.3
Asterisk Open Source=1.4.4
Asterisk Open Source=1.4.5
Asterisk Open Source=1.4.6
Asterisk Open Source=1.4.7
Asterisk Open Source=1.4.7.1
Asterisk Open Source=1.4.8
Asterisk Open Source=1.4.9
Asterisk Open Source=1.4.10
Asterisk Open Source=1.4.10.1
Asterisk Open Source=1.4.11
Asterisk Open Source=1.4.12
Asterisk Open Source=1.4.12.1
Asterisk Open Source=1.4.13
Asterisk Open Source=1.4.14
Asterisk Open Source=1.4.15
Asterisk Open Source=1.4.16
Asterisk Open Source=1.4.16.1
Asterisk Open Source=1.4.16.2
Asterisk Open Source=1.4.17
Asterisk Open Source=1.4.18
Asterisk Open Source=1.4.18.1
Asterisk Open Source=1.4.19-rc1
Asterisk Open Source=1.4.19-rc2
Asterisk Open Source=1.4.19-rc3
Asterisk Open Source=1.4.19-rc4
Asterisk s800i<=1.1.0.2
Asterisk s800i=1.0
Asterisk s800i=1.0.1
Asterisk s800i=1.0.2
Asterisk s800i=1.0.3
Asterisk s800i=1.0.3.3
Asterisk s800i=1.1.0
Asterisk s800i=1.1.0.1
Event History
Apr 23, 2008
CVE Published
via MITRE·04:00 PM
Data Sourced
via MITRE·04:00 PM
Description
Frequently Asked Questions
1
What is the severity of CVE-2008-1923?
The severity of CVE-2008-1923 is classified as high due to its potential to cause a denial of service.
2
How do I fix CVE-2008-1923?
To fix CVE-2008-1923, ensure that your Asterisk configuration does not allow unauthenticated calls.
3
Which versions are affected by CVE-2008-1923?
CVE-2008-1923 affects Asterisk versions 1.2 before revision 72630 and 1.4 before revision 65679.
4
Can CVE-2008-1923 be exploited remotely?
Yes, CVE-2008-1923 can be exploited remotely by attackers sending unauthenticated calls to unverified IP addresses.
5
Is there a workaround for CVE-2008-1923?
A recommended workaround for CVE-2008-1923 is to disable unauthenticated calls in the Asterisk configuration.