Free and open-source vulnerability scanner
Mageni eases for you the vulnerability scanning, assessment, and management process. It is free and open-source.
Install NowAvailable for macOS, Windows, and Linux
Asterisk SIP Channel Driver Denial Of Service Vulnerability (Linux)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
This host has Asterisk installed and is prone to Denial of Service vulnerability.
Insight
Insight
The flaw is due to an error in SIP channel driver which fails to use maximum width when invoking 'sscanf' style functions. This can be exploited via SIP packets containing large sequences of ASCII decimal characters as demonstrated via vectors related to the CSeq value in a SIP header, large Content-Length value and SDP.
Affected Software
Affected Software
Asterisk version 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4 on Linux.
Solution
Solution
Upgrade to version 1.2.34, 1.4.26.1, 1.6.0.12, 1.6.1.4 or later.
Common Vulnerabilities and Exposures (CVE)
References
- http://secunia.com/advisories/36227/
- http://www.vupen.com/english/advisories/2009/2229
- http://labs.mudynamics.com/advisories/MU-200908-01.txt
- http://downloads.asterisk.org/pub/security/AST-2009-005.html
- http://downloads.digium.com/pub/security/AST-2009-005-1.2.diff.txt
- http://downloads.digium.com/pub/security/AST-2009-005-1.4.diff.txt
- http://downloads.digium.com/pub/security/AST-2009-005-trunk.diff.txt
- http://downloads.digium.com/pub/security/AST-2009-005-1.6.0.diff.txt
- http://downloads.digium.com/pub/security/AST-2009-005-1.6.1.diff.txt
- http://downloads.digium.com/pub/security/AST-2009-005-1.6.2.diff.txt