Secunia Research has discovered two vulnerabilities in Network Instruments Observer, which can be exploited by malicious people to compromise a vulnerable system. A boundary error in the "CSnmp::DecodePacket()" method (NISNMP.DLL) when processing the community string can be exploited to cause a heap-based buffer overflow via a specially crafted SNMP datagram. An error in the "CSnmp::DecodePacket()" method (NISNMP.DLL) when processing an Object Identifier (OID) can be exploited to cause a heap-based buffer overflow via a specially crafted Trap PDU (0xA4) SNMP datagram sent to UDP port 162. Successful exploitation of the vulnerabilities allows execution of arbitrary code, but may require the attacker to enumerate or guess the SNMP port. Observer version 15.1 Build 0007.0000 is affected.
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