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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