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Message-ID: <20111026164022.GA10041@albatros>
Date: Wed, 26 Oct 2011 20:40:22 +0400
From: Vasiliy Kulikov <segoon@...nwall.com>
To: Kurt Seifried <kseifried@...hat.com>
Cc: oss-security@...ts.openwall.com
Subject: Re: CVE Request -- kernel: sysctl: restrict write
access to dmesg_restrict
On Wed, Oct 26, 2011 at 10:11 -0600, Kurt Seifried wrote:
> >> Please use CVE-2011-4080 for this issue.
> >
> > Why does it worth CVE?
>
> This allows an attacker to bypass a security boundary. The root user is
> able to gain privileges they shouldn't have.
You have much bigger problems if you rely on the security boundaries
defined by LXC. As I've already showed, LXC root may execute arbitrary
code as the full root in the root namespaces.
(I assume we're talking about the mainline kernel, not OpenVZ or any
other kernel fork/patchset/etc.)
Thanks,
--
Vasiliy Kulikov
http://www.openwall.com - bringing security into open computing environments
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