Juniper Junos OS before 13.3R9, 14.1R6 before 14.1R6-S1, and 14.1 before 14.1R7, when configured with VPLS routing-instances, allows remote attackers to obtain sensitive mbuf information by injecting a flood of Ethernet frames with IPv6 MAC addresses directly into a connected interface.
http://www.securitytracker.com/id/1036301
http://www.securityfocus.com/bid/91758
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10750