[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20170520175436.GA30962@jasmine>
Date: Sat, 20 May 2017 13:54:36 -0400
From: Leo Famulari <leo@...ulari.name>
To: oss-security@...ts.openwall.com
Subject: Re: Re: ImageMagick: CVE-2017-9098: use of
uninitialized memory in RLE decoder
On Sat, May 20, 2017 at 08:26:36AM -0700, Ian Zimmerman wrote:
> On 2017-05-20 09:26, Salvatore Bonaccorso wrote:
>
> > Chris Evans discovered that ImageMagick uses unitialized memory in the
> > RLE decoder, allowing an attacker to leak sensitive information from
> > process memory space. There is missing initialization in the
> > ReadRLEImage function.
> >
> > Original article at:
> >
> > https://scarybeastsecurity.blogspot.com/2017/05/bleed-continues-18-byte-file-14k-bounty.html
>
> It was good to see the discussion of how GraphicsMagick was affected, or
> not. I would love to see that in all *Magick weakness reports.
Chris Evans' report (copied in the email you replied to) says this:
GraphicsMagick vs. ImageMagick, again. Well, well, look at this :)
GraphicsMagick fixed this issue in March 2016, for the v1.3.24 release, tucked
away in a changeset titled "Fix SourceForge bug #371 "out-of-bounds read in
coders/rle.c:633:39" (see the second memset()). This is another case where tons
of vulnerabilities are being found and fixed in both GraphicsMagick and
ImageMagick with little co-ordination. This seems like a waste of effort and a
risk of 0-day (or is it 1-day?) exposure. It goes both ways: the RLE memory
corruption I referenced in my previous blog post was only fixed in
GraphicsMagick in March 2016, having been previously fixed in ImageMagick in
Dec 2014.
Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
