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From: Leo Famulari <leo@famulari.name>
To: guix-devel@gnu.org
Subject: Requesting advice on ImageMagick popen() filename vulnerability (CVE-2016-5118)
Date: Tue, 31 May 2016 13:02:05 -0400	[thread overview]
Message-ID: <20160531170205.GA355@jasmine> (raw)

CVE-2016-5118 is a bug in GraphicsMagick and ImageMagick whereby
one can get shell execution by passing the libraries a file whose name
begins with the pipe character, |.

http://seclists.org/oss-sec/2016/q2/433

We (crudely) fixed this for GraphicsMagick in d8862778c1b.

Now I see that ImageMagick has suggested a similar interim fix on their
forums:
https://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=29803#p134039

Also, they have begun committing mitigations to their Git repository:
http://git.imagemagick.org/repos/ImageMagick/commit/ca430ff77794980941ff0fa0d2fc463b50c2c6b7

I plan to fix this in our package using the "crude" option until
ImageMagick releases a new version, which seems to be happening every
few days.

Please let me know if you object to this solution.

             reply	other threads:[~2016-05-31 17:02 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-31 17:02 Leo Famulari [this message]
2016-05-31 17:40 ` Requesting advice on ImageMagick popen() filename vulnerability (CVE-2016-5118) Leo Famulari
2016-05-31 21:12 ` Ludovic Courtès

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