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Date: Wed, 13 May 2015 23:20:40 +0200
From: Marcus Meissner <>
Subject: Re: VENOM - CVE-2015-3456

On Wed, May 13, 2015 at 11:57:20PM +0300, Solar Designer wrote:
> On Wed, May 13, 2015 at 12:22:19PM +0000, Jason Geffner wrote:
> > VENOM, CVE-2015-3456, is a security vulnerability in the virtual floppy drive code used by many computer virtualization platforms.
> Some bits of contemporary history, off Twitter:
> <nelhage> All I have to say about VENOM is that I was exploiting obsolete hardware in qemu years before it was cool.
> <solardiz> @nelhage I think @taviso was there first, with emulated Cirrus Logic VGA (CVE-2007-1320) and NE2000 vulns in QEMU.

Yeah, we fixed a lot of them, some less, some more exploitable.

As I had some confusion on if the fdc is disabled or not in regards to
the -nodefaults, so I wrote a small PoC.

(and no, -nodefaults does not disable the fdc)

Ciao, Marcus

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