Asterisk IAX2 Packet Amplification Remote Denial of Service Vulnerability
Severity: MEDIUM
CVE Identifier: CVE-2008-1897
Advisory Date: FEB 15, 2011
DESCRIPTION
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.
TREND MICRO PROTECTION INFORMATION
Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.
SOLUTION
Trend Micro Deep Security DPI Rule Number: 1002607
Trend Micro Deep Security DPI Rule Name: 1002607 - Asterisk IAX2 Packet Amplification Remote Denial of Service
AFFECTED SOFTWARE AND VERSION
- asterisk asterisk_appliance_developer_kit 0.2
- asterisk asterisk_appliance_developer_kit 0.3
- asterisk asterisk_appliance_developer_kit 0.4
- asterisk asterisk_appliance_developer_kit 0.5
- asterisk asterisk_appliance_developer_kit 0.6
- asterisk asterisk_appliance_developer_kit 0.6.0
- asterisk asterisk_appliance_developer_kit 0.7
- asterisk asterisk_appliance_developer_kit 0.8
- asterisk asterisk_business_edition a
- asterisk asterisknow 1.0
- asterisk asterisk_business_edition c1.8.0
- asterisk asterisk_business_edition c.1.6.2
- asterisk asterisk_business_edition c.1.6.1
- asterisk asterisk_business_edition c.1.6
- asterisk asterisk_business_edition c.1.0
- asterisk asterisk_business_edition b.2.5.1
- asterisk asterisk_business_edition b.2.3.6
- asterisk asterisknow 1.0.1
- asterisk asterisknow 1.0.2
- asterisk open_source 1.4.19
- asterisk open_source 1.4.18.1
- asterisk open_source 1.4.18
- asterisk open_source 1.4.17
- asterisk open_source 1.4.16.2
- asterisk open_source 1.4.16.1
- asterisk open_source 1.4.16
- asterisk open_source 1.4.15
- asterisk open_source 1.4.14
- asterisk open_source 1.4.13
- asterisk open_source 1.4.12.1
- asterisk open_source 1.4.12
- asterisk open_source 1.4.11
- asterisk open_source 1.4.10.1
- asterisk open_source 1.4.10
- asterisk open_source 1.4.1
- asterisk open_source 1.4.0
- asterisk open_source 1.2.9.1
- asterisk open_source 1.2.9
- asterisk open_source 1.2.8
- asterisk open_source 1.2.7.1
- asterisk open_source 1.2.7
- asterisk open_source 1.2.6
- asterisk open_source 1.2.5
- asterisk open_source 1.2.4
- asterisk open_source 1.2.3
- 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
- asterisk s800i 1.1.0.2
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