CVE-2008-1897: Medium severity asterisk business edition vulnerability

Published Apr 23, 2008
·
Updated

The IAX2 channel driver (chaniax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.

Affected Software

145 affected components
Asterisk Asterisk Business Edition=c.1.6.2
Asterisk Asterisk Appliance Developer Kit=0.3
Asterisk Asterisk Business Edition=b.2.2.0
Asterisk Open Source=1.2.4-netsec
Asterisk Open Source=1.2.8
Asterisk Asterisk Appliance Developer Kit=0.6
Asterisk Open Source=1.2.16-netsec
Asterisk Asterisk Business Edition=c.1.6.1
Asterisk Open Source=1.0.1
Asterisk s800i=1.0.3.3
Asterisk Open Source=1.2.14
Asterisk s800i=1.0
Asterisk s800i=1.0.2
Asterisk Open Source=1.2.20-netsec
Asterisk Open Source<=1.4.19
Asterisk Open Source=1.0.11-patch
Asterisk Asterisk Business Edition=c.1.0-beta7
Asterisk Open Source=1.2.12-netsec
Asterisk Open Source=1.2.19-netsec
Asterisk Asterisk Business Edition<=c1.8.0
Asterisk Open Source=1.0.4
Asterisk Open Source=1.0
Asterisk Open Source=1.2.15
Asterisk Open Source=1.2.9.1-netsec
Asterisk Open Source=1.0.12-patch
Asterisk Open Source=1.4.10
Asterisk Open Source=1.2.14-netsec
Asterisk Open Source=1.2.3
Asterisk Open Source=1.2.23
Asterisk Open Source=1.2.0-beta2
Asterisk Open Source=1.2.26.2-netsec
Asterisk Asterisk Appliance Developer Kit=0.6.0
Asterisk Open Source=1.4.0
Asterisk Open Source=1.2.26.1
Asterisk Open Source=1.4.15
Asterisk Open Source=1.0.2
Asterisk Open Source=1.2.13-netsec
Asterisk Asterisk Business Edition<=b.2.5.1
Asterisk Open Source<=1.2.27
Asterisk Open Source=1.2.25-netsec
Asterisk Open Source=1.2.0-rc2
Asterisk Open Source=1.2.1
Asterisk Open Source=1.2.26-netsec
Asterisk Open Source=1.0.11
Asterisk Asterisk Business Edition=b.2.3.1
Asterisk Open Source=1.2.24
Asterisk Open Source=1.4.12.1
Asterisk s800i=1.1.0
Asterisk Open Source=1.0.3.4
Asterisk Open Source=1.4.12
Asterisk Open Source=1.2.9.1
Asterisk Open Source=1.4.16.2
Asterisk s800i=1.1.0.1
Asterisk Asterisk Business Edition=c.1.6
Asterisk Open Source=1.0.6
Asterisk Open Source=1.4.13
Asterisk Open Source=1.2.0
Asterisk Open Source=1.2.25
Asterisk Open Source=1.2.3-netsec
Asterisk Open Source=1.2.18-netsec
Asterisk Open Source=1.2.10-netsec
Asterisk Open Source=1.2.11
Asterisk Open Source=1.4.10.1
Asterisk Open Source=1.2.12
Asterisk Open Source=1.4.18.1
Asterisk Open Source=1.2.7.1-netsec
Asterisk Open Source=1.2.13
Asterisk Asterisk Business Edition=b.2.5.0
Asterisk Asterisk Business Edition=b.2.3.3
Asterisk Asterisk Appliance Developer Kit=0.7
Asterisk Open Source=1.2.2
Asterisk Open Source=1.2.6-netsec
Asterisk Open Source=1.4.1
Asterisk Open Source=1.2.5
Asterisk Asterisk Appliance Developer Kit=0.4
Asterisk Open Source=1.0.5
Asterisk Open Source=1.0.3
Asterisk Open Source=1.2.26
Asterisk Open Source=1.4.0-beta4
Asterisk Open Source=1.0.12
Asterisk Open Source=1.2.24-netsec
Asterisk s800i=1.0.3
Asterisk Open Source=1.4.11
Asterisk Open Source=1.2.21
Asterisk Open Source=1.2.21-netsec
Asterisk Open Source=1.0.9
Asterisk Asterisk Business Edition=b.1.3.2
Asterisk Open Source=1.2.0-rc1
Asterisk s800i<=1.1.0.2
Asterisk Open Source=1.0.7
Asterisk Open Source=1.2.11-netsec
Asterisk AsteriskNOW<=1.0.2
Asterisk Open Source=1.2.26.2
Asterisk Open Source=1.4.0-beta2
Asterisk Open Source=1.2.7
Asterisk s800i=1.0.1
Asterisk Open Source=1.2.10
Asterisk AsteriskNOW=1.0.1
Asterisk Open Source=1.2.17
Asterisk Asterisk Business Edition=b.1.3.3
Asterisk Open Source=1.2.7.1
Asterisk Open Source=1.2.7-netsec
Asterisk Open Source=1.2.17-netsec
Asterisk Open Source=1.2.20
Asterisk Open Source=1.2.4
Asterisk Asterisk Business Edition=b.2.3.4
Asterisk Open Source=1.4.0-beta3
Asterisk Open Source=1.0.8
Asterisk Open Source=1.0-rc1
Asterisk Open Source=1.4.18
Asterisk Open Source=1.2.15-netsec
Asterisk Asterisk Business Edition=b.2.3.6
Asterisk Open Source=1.2.22
Asterisk Open Source=1.2.5-netsec
Asterisk Open Source=1.2.2-netsec
Asterisk Open Source=1.4.16
Asterisk Asterisk Appliance Developer Kit=0.8
Asterisk Open Source=1.4.14
Asterisk Open Source=1.2.0-beta1
Asterisk Open Source=1.2.16
Asterisk Open Source=1.2.12.1
Asterisk Open Source=1.2.9
Asterisk Open Source=1.4.16.1
Asterisk Open Source=1.2.21.1
Asterisk Open Source=1.2.8-netsec
Asterisk Open Source=1.2.26.1-netsec
Asterisk Open Source=1.0.0
Asterisk Open Source=1.2.19
Asterisk Asterisk Business Edition=b.2.2.1
Asterisk Asterisk Business Edition=a
Asterisk Open Source=1.2.12.1-netsec
Asterisk Asterisk Business Edition=c.1.0-beta8
Asterisk Asterisk Appliance Developer Kit=0.5
Asterisk Asterisk Appliance Developer Kit=0.2
Asterisk Asterisk Business Edition=b.2.3.2
Asterisk Open Source=1.0.11.1-patch
Asterisk Open Source=1.2.21.1-netsec
Asterisk Open Source=1.4.17
Asterisk Open Source=1.2.6
Asterisk AsteriskNOW=1.0
Asterisk Open Source=1.2.18
Asterisk Open Source=1.2.22-netsec
Asterisk Open Source=1.2.23-netsec
Asterisk Open Source=1.0.11.1
Asterisk Open Source=1.0-rc2

Event History

Apr 23, 2008
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2008-1897?

CVE-2008-1897 is classified as a high severity vulnerability due to its potential for unauthorized access.

2

How do I fix CVE-2008-1897?

To resolve CVE-2008-1897, update to the latest version of Asterisk that is not affected, specifically versions 1.2.28, 1.4.19.1, or later.

3

Which Asterisk versions are impacted by CVE-2008-1897?

CVE-2008-1897 affects Asterisk Open Source versions 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1 among others.

4

What types of systems are vulnerable due to CVE-2008-1897?

CVE-2008-1897 impacts both the Asterisk Open Source and Asterisk Business Edition systems configured to allow unauthenticated access.

5

Is there a specific configuration that makes CVE-2008-1897 exploitable?

Yes, CVE-2008-1897 is exploitable if the IAX2 channel driver is configured to allow unauthenticated access.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203