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Message-ID: <506975.984989793-sendEmail@localhost>
Date: Mon, 28 Aug 2017 15:00:20 +0000
From: "Agostino Sarubbo" <ago@...too.org>
To: "oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com>
Subject: graphicsmagick: memory allocation failure in MagickRealloc (memory.c)
Description:
graphicsmagick is a collection of tools and libraries for many image formats.
The relevant ASan output of the issue:
# gm convert -clip -negate $FILE out
==15168==End of process memory map.
==15168==AddressSanitizer CHECK failed: /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/sanitizer_common/sanitizer_common.cc:120 "((0 && "unable to mmap")) != (0)"
(0x0, 0x0)
#0 0x4d966f in AsanCheckFailed /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/asan/asan_rtl.cc:69
#1 0x4f43d5 in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/sanitizer_common/sanitizer_termination.cc:79
#2 0x4e3a02 in __sanitizer::ReportMmapFailureAndDie(unsigned long, char const*, char const*, int, bool) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/sanitizer_common/sanitizer_common.cc:120
#3 0x4ed305 in __sanitizer::MmapOrDie(unsigned long, char const*, bool) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/sanitizer_common/sanitizer_posix.cc:132
#4 0x420a02 in __sanitizer::LargeMmapAllocator::Allocate(__sanitizer::AllocatorStats*, unsigned long, unsigned long) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/asan/../sanitizer_common/sanitizer_allocator_secondary.h:41
#5 0x420a02 in __sanitizer::CombinedAllocator<__sanitizer::SizeClassAllocator64, __sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator64 >, __sanitizer::LargeMmapAllocator >::Allocate(__sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator64 >*, unsigned long, unsigned long, bool, bool) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/asan/../sanitizer_common/sanitizer_allocator_combined.h:70
#6 0x420a02 in __asan::Allocator::Allocate(unsigned long, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType, bool) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/asan/asan_allocator.cc:407
#7 0x420a02 in __asan::asan_malloc(unsigned long, __sanitizer::BufferedStackTrace*) /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/asan/asan_allocator.cc:782
#8 0x4cf664 in malloc /var/tmp/portage/sys-libs/compiler-rt-sanitizers-4.0.1/work/compiler-rt-4.0.1.src/lib/asan/asan_malloc_linux.cc:67
#9 0x7fe7563f4171 in MagickRealloc /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/memory.c:471:18
#10 0x7fe7564ca47c in OpenCache /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/pixel_cache.c:3155:7
#11 0x7fe7564c62c7 in ModifyCache /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/pixel_cache.c:2955:18
#12 0x7fe7564dfb44 in SetCacheNexus /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/pixel_cache.c:3886:7
#13 0x7fe7564df028 in SetCacheViewPixels /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/pixel_cache.c:3965:10
#14 0x7fe74fbbe2fe in ReadPNMImage /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/coders/pnm.c:628:19
#15 0x7fe756011e88 in ReadImage /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/constitute.c:1607:13
#16 0x7fe755ea4f18 in ConvertImageCommand /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/command.c:4348:22
#17 0x7fe755ee10c5 in MagickCommand /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/command.c:8869:17
#18 0x7fe755f8c85b in GMCommandSingle /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/command.c:17396:10
#19 0x7fe755f89991 in GMCommand /var/tmp/portage/media-gfx/graphicsmagick-1.3.26/work/GraphicsMagick-1.3.26/magick/command.c:17449:16
#20 0x7fe7547f4680 in __libc_start_main /var/tmp/portage/sys-libs/glibc-2.23-r4/work/glibc-2.23/csu/../csu/libc-start.c:289
#21 0x419cd8 in _init (/usr/bin/gm+0x419cd8)
/usr/bin/gm convert: abort due to signal 6 (SIGABRT) "Abort"...
Affected version:
1.3.26
Fixed version:
N/A
Commit fix:
http://hg.code.sf.net/p/graphicsmagick/code/rev/3bbf7a13643d
Credit:
This bug was discovered by Agostino Sarubbo of Gentoo.
CVE:
Waiting for a CVE assignment
Reproducer:
https://github.com/asarubbo/poc/blob/master/00331-graphicsmagick-memallocfailure-MagickRealloc
Timeline:
2017-07-12: bug discovered and reported to upstream privately
2017-08-16: bug reported to the public upstream bugtracker
2017-08-20: upstream released a fix
2017-08-28: blog post about the issue
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/2017/08/28/graphicsmagick-memory-allocation-failure-in-magickrealloc-memory-c-2/
--
Agostino Sarubbo
Gentoo Linux Developer
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