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Date: Wed, 13 Mar 2013 09:10:38 +0000
From: Tim Brown <tmb@...35.com>
To: oss-security@...ts.openwall.com
Cc: gremlin@...mlin.ru
Subject: Re: Linux kernel + devtmpfs automount == insecure /dev/{,u}random mode
On Wednesday 13 Mar 2013 08:35:54 gremlin@...mlin.ru wrote:
*snip*
> The obvious fix is to create these devices with mode 0644,
> so only root will be able to re-initialize the entropy pool.
On Debian at least:
/lib/udev/rules.d/91-permissions.rules:KERNEL=="random",
MODE="0666"
/lib/udev/rules.d/91-permissions.rules:KERNEL=="urandom",
MODE="0666"
> Possibly, this even deserves a CVE to be assigned...
Tim
--
Tim Brown
<mailto:tmb@...35.com>
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