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Asterisk IAX2 Call Number Exhaustion DOS Vulnerability (Linux)
Information
Severity
Severity
High
Family
Family
Denial of Service
CVSSv2 Base
CVSSv2 Base
7.8
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Solution Type
Solution Type
Vendor Patch
Created
Created
14 years ago
Modified
Modified
5 years ago
Summary
This host has Asterisk installed and is prone to Denial of Service vulnerability.
Insight
Insight
An error in the 'IAX2' protocol implementation while processing call-number which can be exploited by initiating many IAX2 message exchanges.
Affected Software
Affected Software
Asterisk version 1.2.x before 1.2.35, 1.4.x before 1.4.26.2, 1.6.0.x before 1.6.0.15, and 1.6.1.x before 1.6.1.6 on Linux.
Solution
Solution
Upgrade to version 1.2.35, 1.4.26.2, 1.6.0.15, 1.6.1.6 or later.
Common Vulnerabilities and Exposures (CVE)
References
- http://secunia.com/advisories/36593/
- http://securitytracker.com/alerts/2009/Sep/1022819.html
- http://downloads.asterisk.org/pub/security/AST-2009-006.html
- http://downloads.asterisk.org/pub/security/AST-2009-006-1.2.diff.txt
- http://downloads.asterisk.org/pub/security/AST-2009-006-1.4.diff.txt
- http://downloads.asterisk.org/pub/security/AST-2009-006-1.6.0.diff.txt
- http://downloads.asterisk.org/pub/security/AST-2009-006-1.6.1.diff.txt