Public bug reported:
This bug was found while fuzzing ImageMagick with afl-fuzz
Tested on ImageMagick version d8382f9c0ffa52057271a6a323e7e062f0fe4ff6
Command: magick infile /dev/null
Build info:
#Configure command:
CC=afl-clang-fast CXX=afl-clang-fast++ ./configure --with-bzlib=no
--with-djvu=no --with-dps=no --with-fftw=no --with-fpx=no --with-fontconfig=no
--with-freetype=no --with-gvc=no --with-jbig=no --with-jpeg=no --with-lcms=no
--with-lqr=no --with-ltdl=no --with-lzma=no --with-openexr=no --with-openjp2=no
--with-pango=no --with-png=no --with-tiff=no --with-wmf=no --with-x=no
--with-xml=no --with-zlib=no --enable-hdri=no --enable-shared=no
#Make command:
CC=afl-clang-fast CXX=afl-clang-fast++ make
ASAN output:
==6043==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb5b07eb9 at
pc 0x877cbcb bp 0xbfccb058 sp 0xbfccb050
READ of size 1 at 0xb5b07eb9 thread T0
#0 0x877cbca in ReadPSDChannelPixels
/home/user/Desktop/imagemagick_reporting/ImageMagick/coders/psd.c:797:13
#1 0x8776ccb in ReadPSDChannelRaw
/home/user/Desktop/imagemagick_reporting/ImageMagick/coders/psd.c:925
#2 0x875eb8f in ReadPSDMergedImage
/home/user/Desktop/imagemagick_reporting/ImageMagick/coders/psd.c:1728
#3 0x875eb8f in ReadPSDImage
/home/user/Desktop/imagemagick_reporting/ImageMagick/coders/psd.c:1994
#4 0x8a8b97a in ReadImage
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickCore/constitute.c:494
#5 0x8a937ef in ReadImages
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickCore/constitute.c:844
#6 0x93754a9 in CLINoImageOperator
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/operation.c:4663
#7 0x937d98f in CLIOption
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/operation.c:5157
#8 0x910afad in ProcessCommandOptions
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/magick-cli.c:474
#9 0x910e325 in MagickImageCommand
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/magick-cli.c:786
#10 0x9112809 in MagickCommandGenesis
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/mogrify.c:172
#11 0x80de10d in MagickMain
/home/user/Desktop/imagemagick_reporting/ImageMagick/utilities/magick.c:74
#12 0x80de10d in main
/home/user/Desktop/imagemagick_reporting/ImageMagick/utilities/magick.c:85
#13 0xb748ca82 in __libc_start_main
/build/buildd/eglibc-2.19/csu/libc-start.c:287
#14 0x80ddf34 in _start
(/home/user/Desktop/imagemagick_reporting/ImageMagick/utilities/magick+0x80ddf34)
0xb5b07eb9 is located 0 bytes to the right of 9-byte region
[0xb5b07eb0,0xb5b07eb9)
allocated by thread T0 here:
#0 0x80c6b61 in malloc
(/home/user/Desktop/imagemagick_reporting/ImageMagick/utilities/magick+0x80c6b61)
#1 0x81939e9 in AcquireMagickMemory
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickCore/memory.c:463
#2 0x81939e9 in AcquireQuantumMemory
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickCore/memory.c:539
#3 0x8a8b97a in ReadImage
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickCore/constitute.c:494
#4 0x8a937ef in ReadImages
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickCore/constitute.c:844
#5 0x93754a9 in CLINoImageOperator
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/operation.c:4663
#6 0x937d98f in CLIOption
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/operation.c:5157
#7 0x910afad in ProcessCommandOptions
/home/user/Desktop/imagemagick_reporting/ImageMagick/MagickWand/magick-cli.c:474
SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/user/Desktop/imagemagick_reporting/ImageMagick/coders/psd.c:797
ReadPSDChannelPixels
Shadow bytes around the buggy address:
0x36b60f80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36b60f90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36b60fa0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36b60fb0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36b60fc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x36b60fd0: fa fa fa fa fa fa 00[01]fa fa 00 00 fa fa 00 01
0x36b60fe0: fa fa fd fd fa fa fd fd fa fa 00 fa fa fa fd fd
0x36b60ff0: fa fa fd fd fa fa 00 fa fa fa 00 fa fa fa 00 fa
0x36b61000: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36b61010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36b61020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
ASan internal: fe
** Affects: imagemagick (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "psd.c_797"
https://bugs.launchpad.net/bugs/1533442/+attachment/4548907/+files/id%3A000017%2Csig%3A06%2Csrc%3A000431%2Cop%3Aarith8%2Cpos%3A23%2Cval%3A-7
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https://bugs.launchpad.net/bugs/1533442
Title:
heap-buffer-overflow in coders/psd.c:797 ReadPSDChannelPixels
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