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Asterisk PBX SDP Header Overflow Vulnerability
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
15 years ago
Modified
Modified
5 years ago
Summary
The remote Asterisk PBX SIP server is affected by an overflow vulnerability.
Insight
Insight
The application installed suffers from a remote overflow in the SIP service resulting in a denial of service. An attacker can send a malformed INVITE packet with two SDP headers, whitin the first header a existing IP address in the 'c=' variable and in the second SDP header a NOT existing IP address in 'c='.
Solution
Solution
Upgrade to Asterisk release 1.4.2/1.2.17 or newer.