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Date: Thu, 14 Nov 2013 20:58:57 -0700
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: "I miss LSD", slides, paper and tools relating
to finding UNIX system level vulnerabilities (as given at 44CON)
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On 11/14/2013 05:20 AM, Tim Brown wrote:
> All,
>
> Some of you may already have spotted this, but last night we
> published our slides, paper and some tools from my talk at 44CON
> earlier in the year. The content can be found at:
>
> * http://labs.portcullis.co.uk/presentations/i-miss-lsd/
>
> The take home points around the System V shared memory issues
> (detailed in more detail in the linked to paper) are:
>
> * System V shared memory is often created with weak permissions. *
> Usage of System V shared memory by X11 applications is particularly
> problematic. * Qt Project patched Qt APIs (CVE-2013-0254), Oracle
> patched Java JRE (CVE-2013-1500), Google patched Chrome
> independently. * No progress has been made on the problem more
> generally by either Red Hat or Debian. * Coccinelle is an effective
> tool for performing static analysis on large corpuses of C. *
> Memory corruption attacks against System V shared memory are
> unlikely.
>
> I've also released a tool called smaSHeM (again linked to) for
> dumping System V shared memory and for manipulating it.
>
> Tim
>
One consistent issue I've noticed is any file/object/pipe/whatever
gets created is that 99% use the default umask and don't set any
explicitly safe permissions. And in most of these cases that leads to
problems.
- --
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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