Secunia Research has discovered a vulnerability in Samba, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to a boundary error within the "reply_netbios_packet()" function in nmbd/nmbd_packets.c when sending NetBIOS replies. This can be exploited to cause a stack-based buffer overflow by sending multiple specially crafted WINS "Name Registration" requests followed by a WINS "Name Query" request. Samba version 3.0.26a is affected.
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