This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Apache Tomcat.
The vulnerability is due to an improper boundary check condition in the application when parsing overly long URI. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted HTTP request.
Tomcat JK Web Server Connector 1.2.19
Tomcat JK Web Server Connector 1.2.20
System Compromise: Remote attackers can gain control of vulnerable systems.
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