This indicates an attack attempt to exploit a Buffer Overflow vulnerability in the CDR engine of Digium Asterisk.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted SIP request. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted SIP request.
Digium Asterisk Open Source 14.x prior to 14.3.1
Digium Asterisk Open Source 13.x prior to 13.14.1
Digium Certified Asterisk 13.13 prior to 13.13-cert3
System Compromise: Remote attackers can gain control of vulnerable systems.
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