Net-SNMP is a freely available, open source implementation of the SNMP protocol. It was previously known as UCD-SNMP.
SNMP requests are messages sent from manager to agent systems. They typically poll the agent for current performance or configuration information, ask for the next SNMP object in a Management Information Base (MIB), or modify the configuration settings of the agent. SNMP traps are messages sent from agent to manager systems. They typically notify the manager that some event has occured or otherwise provide information about the status of the agent.
Multiple vulnerabilities have been discovered in this SNMP implementation. A number of PROTOS test cases cause UCD-SNMP to crash or experience great delays.
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