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1	Vulnerabilities in SNMPv3 Lawrence, Nigel Rhea 10 July 2012 (has links) Network monitoring is a necessity for both reducing downtime and ensuring rapid response in the case of software or hardware failure. Unfortunately, one of the most widely used protocols for monitoring networks, the Simple Network Management Protocol (SNMPv3), does not offer an acceptable level of confidentiality or integrity for these services. In this paper, we demonstrate two attacks against the most current and secure version of the protocol with authentication and encryption enabled. In particular, we demonstrate that under reasonable conditions, we can read encrypted requests and forge messages between the network monitor and the hosts it observes. Such attacks are made possible by an insecure discovery mechanism, which allows an adversary capable of compromising a single network host to set the keys used by the security functions. Our attacks show that SNMPv3 places too much trust on the underlying network, and that this misplaced trust introduces vulnerabilities that can be exploited. Vulnerability Man-in-the-middle MITM Exploit Weakness Authoritative Non-authoritative USM TSM Rfc1443 1443 Auth Authentication NMS Manager Management Embedded Computer networks Monitoring Computer networks Management