*** This bug is a security vulnerability ***
Public security bug reported:
This bug was found while fuzzing ImageMagick with afl-fuzz
Tested on ImageMagick git commit <unknown>
Command: magick id:000043,sig:06,src:000224,op:flip1,pos:15 /dev/null
magick: InvalidLength
`/home/user/Desktop/FuzzImageMagick/fuzz_results_2016_02_12/fuzzer01/crashes/id:000043,sig:06,src:000224,op:flip1,pos:15'
@ error/psd.c/ReadPSDChannelRLE/1002.
=================================================================
==31657==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb4003bc1 at
pc 0x8767a1a bp 0xbfe4ba18 sp 0xbfe4ba10
WRITE of size 1 at 0xb4003bc1 thread T0
#0 0x8767a19 in PSDPackbitsEncodeImage
/home/user/Desktop/FuzzImageMagick/ImageMagick/coders/psd.c:2225
#1 0x87648eb in WritePackbitsLength
/home/user/Desktop/FuzzImageMagick/ImageMagick/coders/psd.c:2289
#2 0x876123f in WriteImageChannels
/home/user/Desktop/FuzzImageMagick/ImageMagick/coders/psd.c:2389
#3 0x875dd8c in WritePSDImage
/home/user/Desktop/FuzzImageMagick/ImageMagick/coders/psd.c:2974
#4 0x8a961f8 in WriteImage
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickCore/constitute.c:1091
#5 0x8a99bdc in WriteImages
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickCore/constitute.c:1309
#6 0x937607f in CLINoImageOperator
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/operation.c:4714
#7 0x937de91 in CLIOption
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/operation.c:5174
#8 0x910bef3 in ProcessCommandOptions
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/magick-cli.c:526
#9 0x910e375 in MagickImageCommand
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/magick-cli.c:786
#10 0x9112859 in MagickCommandGenesis
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/mogrify.c:172
#11 0x80de16d in MagickMain
/home/user/Desktop/FuzzImageMagick/ImageMagick/utilities/magick.c:74
#12 0x80de16d in main
/home/user/Desktop/FuzzImageMagick/ImageMagick/utilities/magick.c:85
#13 0xb74dba82 in __libc_start_main
/build/buildd/eglibc-2.19/csu/libc-start.c:287
#14 0x80ddf94 in _start (/usr/local/bin/magick+0x80ddf94)
0xb4003bc1 is located 0 bytes to the right of 257-byte region
[0xb4003ac0,0xb4003bc1)
allocated by thread T0 here:
#0 0x80c6bc1 in malloc (/usr/local/bin/magick+0x80c6bc1)
#1 0x81888e9 in AcquireMagickMemory
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickCore/memory.c:475
#2 0x81888e9 in AcquireQuantumMemory
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickCore/memory.c:548
#3 0x875dd8c in WritePSDImage
/home/user/Desktop/FuzzImageMagick/ImageMagick/coders/psd.c:2974
#4 0x8a961f8 in WriteImage
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickCore/constitute.c:1091
#5 0x8a99bdc in WriteImages
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickCore/constitute.c:1309
#6 0x937607f in CLINoImageOperator
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/operation.c:4714
#7 0x937de91 in CLIOption
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/operation.c:5174
#8 0x910bef3 in ProcessCommandOptions
/home/user/Desktop/FuzzImageMagick/ImageMagick/MagickWand/magick-cli.c:526
SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/user/Desktop/FuzzImageMagick/ImageMagick/coders/psd.c:2225
PSDPackbitsEncodeImage
Shadow bytes around the buggy address:
0x36800720: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36800730: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36800740: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x36800750: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x36800760: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x36800770: 00 00 00 00 00 00 00 00[01]fa fa fa fa fa fa fa
0x36800780: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x36800790: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x368007a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04
0x368007b0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x368007c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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
==31657==ABORTING
** Affects: imagemagick (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1545180
Title:
out-of-bounds write in coders/psd.c:2225
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