net/bridge/netfilter/ebtables.c in the ebtables module in the netfilter
framework in the Linux kernel before 2.6.33-rc4 does not require the
CAP_NET_ADMIN capability for setting or modifying rules, which allows local
users to bypass intended access restrictions and configure arbitrary
network-traffic filtering via a modified ebtables application.
Updated: 2015-10-17 03:34:05 UTC (commit 10086)