medium
4.3
CWE
287
Advisory Published
Updated

CVE-2008-1897

First published: Wed Apr 23 2008(Updated: )

The IAX2 channel driver (chan_iax2) 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.

Credit: cve@mitre.org

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

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Reference Links

Frequently Asked Questions

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

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