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TITLE:
Linux Kernel ebtables Security Bypass

SECUNIA ADVISORY ID:
SA38133

VERIFY ADVISORY:
http://secunia.com/advisories/38133/

DESCRIPTION:
A security issue has been reported in the Linux Kernel, which can be
exploited by malicious, local users to bypass certain security
restrictions.

The security issue is caused due to the "do_ebt_set_ctl()" and
"do_ebt_get_ctl()" functions in net/bridge/netfilter/ebtables.c not
properly restricting access to users with the "CAP_NET_ADMIN"
capability, which can be exploited to e.g. set and modify ebtables
rules without having the proper capability.

SOLUTION:
Fixed in 2.6.33-rc4.

PROVIDED AND/OR DISCOVERED BY:
Florian Westphal

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dce766af541f6605fa9889892c0280bab31c66ab

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