Secunia Research has discovered a vulnerability in Network Instruments Observer, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an error in the "CSnmp::ASN1_ReadObjIDValue()" method (NISNMP.DLL) when processing an Object Identifier (OID) within a variable binding list. This can be exploited to cause a limited stack-based buffer overflow and cause a crash only via e.g. a specially crafted SetRequest SNMP datagram. Observer version 15.1 Build 0007.0000 is affected.
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