lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Fri, 28 Oct 2022 09:45:52 +0200
To:     Vladimir Oltean <>
Cc:     Ido Schimmel <>,,,,,,,,,,,,
Subject: Re: [RFC PATCH net-next 01/16] bridge: Add MAC Authentication Bypass
 (MAB) support

On 2022-10-28 00:58, Vladimir Oltean wrote:

> I was going to ask if we should bother to add code to prohibit packets
> from being forwarded to an FDB entry that was learned as LOCKED, since
> that FDB entry is more of a "ghost" and not something fully committed?

I think that it is a security flaw if there is any forwarding to 
entries. I can imagine a host behind a locked port with no credentials,
that gets a BR_FDB_LOCKED entry and has a friend on another non-locked 
who can now communicate uni-directional to the host with the 
entry. It should not be too hard to create a scheme using UDP packets or
other for that.

Powered by blists - more mailing lists