out-of-bounds read in MagickCore/memory.c:707:23

[Moshe Kaplan]

This bug was found while fuzzing ImageMagick with afl-fuzz

Tested on ImageMagick version Tested on git commit 8bc3ab67d818204fe5f0fe1dc29b873d37360461

Command: magick id:000202,sig:06,src:003528,op:havoc,rep:16 /dev/null

=================================================================
==14245==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb600aca4 at pc 0x8196b5b bp 0xbfad2b58 sp 0xbfad2b50
READ of size 128 at 0xb600aca4 thread T0
    #0 0x8196b5a in CopyMagickMemory /home/user/Desktop/ImageMagick/MagickCore/memory.c:707:23
    #1 0x8672c7b in WritePDBImage /home/user/Desktop/ImageMagick/coders/pdb.c:893
    #2 0x8a9e9d8 in WriteImage /home/user/Desktop/ImageMagick/MagickCore/constitute.c:1091
    #3 0x8aa23bc in WriteImages /home/user/Desktop/ImageMagick/MagickCore/constitute.c:1309
    #4 0x9371daf in CLINoImageOperator /home/user/Desktop/ImageMagick/MagickWand/operation.c:4697
    #5 0x9379bc1 in CLIOption /home/user/Desktop/ImageMagick/MagickWand/operation.c:5157
    #6 0x91080c3 in ProcessCommandOptions /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:526
    #7 0x910a545 in MagickImageCommand /home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:786
    #8 0x910ea29 in MagickCommandGenesis /home/user/Desktop/ImageMagick/MagickWand/mogrify.c:172
    #9 0x80de12d in MagickMain /home/user/Desktop/ImageMagick/utilities/magick.c:74
    #10 0x80de12d in main /home/user/Desktop/ImageMagick/utilities/magick.c:85
    #11 0xb74cda82 in __libc_start_main /build/buildd/eglibc-2.19/csu/libc-start.c:287
    #12 0x80ddf54 in _start (/usr/local/bin/magick+0x80ddf54)

0xb600aca4 is located 1243540500 bytes to the right of 3051426816-byte region [0xb600ac90,0x6be1c090)
ASAN:SIGSEGV
==14245==AddressSanitizer: while reporting a bug found another one.Ignoring.

[Moshe Kaplan (moshekaplan)]

input file to trigger crash

[Moshe Kaplan (moshekaplan)]

Reported and fixed upstream at: https://github.com/ImageMagick/ImageMagick/issues/108