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Message-ID: <577272.5132733-sendEmail@localhost>
Date: Fri, 22 Sep 2017 06:57:48 +0000
From: "Agostino Sarubbo" <ago@...too.org>
To: "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com>
Subject: graphicsmagick: assertion failure in pixel_cache.c
Description:
graphicsmagick is a collection of tools and libraries for many image formats.
The complete output of the issue:
# gm convert $FILE null
gm: magick/pixel_cache.c:1089: const PixelPacket AcquireImagePixels(const Image , const long, const long, const unsigned long, const unsigned long, ExceptionInfo ): Assertion `image != (Image ) NULL'
failed.
Affected version:
1.3.25, 1.3.26 and maybe past releases
Fixed version:
N/A
Commit fix:
http://hg.code.sf.net/p/graphicsmagick/code/rev/358608a46f0a
Credit:
This bug was discovered by Agostino Sarubbo of Gentoo.
CVE:
CVE-2017-14649
Reproducer:
https://github.com/asarubbo/poc/blob/master/00366-graphicsmagick_assertionfailure_pixel_cache_c
Timeline:
2017-08-12: bug discovered and reported to upstream privately
2017-08-16: bug reported to the public upstream bugtracker
2017-08-29: upstream released a fix
2017-09-19: blog post about the issue
2017-09-21: CVE assigned
Note:
This bug was found with American Fuzzy Lop.
This bug was identified with bare metal servers donated by Packet. This work is also supported by the Core Infrastructure Initiative.
Permalink:
https://blogs.gentoo.org/ago/2017/09/19/graphicsmagick-assertion-failure-in-pixel_cache-c
--
Agostino Sarubbo
Gentoo Linux Developer
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