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Vulnerability Details : CVE-2007-4103

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.
Publish Date : 2007-07-31 Last Update Date : 2008-11-15
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID CWE id is not defined for this vulnerability

- Products Affected By CVE-2007-4103

# Product Type Vendor Product Version Update Edition Language
1 Application Digium Asterisk 1.2.20 Version Details Vulnerabilities
2 Application Digium Asterisk 1.2.21 Version Details Vulnerabilities
3 Application Digium Asterisk Version Details Vulnerabilities
4 Application Digium Asterisk 1.2.22 Version Details Vulnerabilities
5 Application Digium Asterisk 1.4.5 Version Details Vulnerabilities
6 Application Digium Asterisk 1.4.7 Version Details Vulnerabilities
7 Application Digium Asterisk Version Details Vulnerabilities
8 Application Digium Asterisk 1.4.8 Version Details Vulnerabilities
9 Application Digium Asterisk Appliance Developer Kit 0.5.0 Version Details Vulnerabilities
10 Application Digium Asterisknow Pre-release Beta6 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Digium Asterisk 8
Digium Asterisk Appliance Developer Kit 1
Digium Asterisknow Pre-release 1

- References For CVE-2007-4103
GENTOO GLSA-200802-11
BID 24950 Asterisk Multiple Remote Denial of Service Vulnerabilities Release Date:2008-02-26
OSVDB 38197
BUGTRAQ 20070729 ASA-2007-018: Resource exhaustion vulnerability in IAX2 channel driver
VUPEN ADV-2007-2701

- Metasploit Modules Related To CVE-2007-4103

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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