*** This bug is a security vulnerability ***
Public security bug reported:
=================================================================
==19799==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb480485d at
pc 0x85b324e bp 0xbfcaa3a8 sp 0xbfcaa3a0
READ of size 1 at 0xb480485d thread T0
#0 0x85b324d in parse8BIM /home/user/Desktop/ImageMagick/coders/meta.c:465
#1 0x85b324d in ReadMETAImage
/home/user/Desktop/ImageMagick/coders/meta.c:1201
#2 0x8a9438a in ReadImage
/home/user/Desktop/ImageMagick/MagickCore/constitute.c:494
#3 0x8a9c1ff in ReadImages
/home/user/Desktop/ImageMagick/MagickCore/constitute.c:844
#4 0x9371649 in CLINoImageOperator
/home/user/Desktop/ImageMagick/MagickWand/operation.c:4663
#5 0x9379b31 in CLIOption
/home/user/Desktop/ImageMagick/MagickWand/operation.c:5157
#6 0x910713d in ProcessCommandOptions
/home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:474
#7 0x910a4b5 in MagickImageCommand
/home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:786
#8 0x910e999 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 0xb74bba82 in __libc_start_main
/build/buildd/eglibc-2.19/csu/libc-start.c:287
#12 0x80ddf54 in _start (/usr/local/bin/magick+0x80ddf54)
0xb480485d is located 0 bytes to the right of 61-byte region
[0xb4804820,0xb480485d)
allocated by thread T0 here:
#0 0x80c6b81 in malloc (/usr/local/bin/magick+0x80c6b81)
#1 0x81932f9 in AcquireMagickMemory
/home/user/Desktop/ImageMagick/MagickCore/memory.c:475
#2 0x81932f9 in AcquireQuantumMemory
/home/user/Desktop/ImageMagick/MagickCore/memory.c:548
#3 0x8a9438a in ReadImage
/home/user/Desktop/ImageMagick/MagickCore/constitute.c:494
#4 0x8a9c1ff in ReadImages
/home/user/Desktop/ImageMagick/MagickCore/constitute.c:844
#5 0x9371649 in CLINoImageOperator
/home/user/Desktop/ImageMagick/MagickWand/operation.c:4663
#6 0x9379b31 in CLIOption
/home/user/Desktop/ImageMagick/MagickWand/operation.c:5157
#7 0x910713d in ProcessCommandOptions
/home/user/Desktop/ImageMagick/MagickWand/magick-cli.c:474
SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/user/Desktop/ImageMagick/coders/meta.c:465 parse8BIM
Shadow bytes around the buggy address:
0x369008b0: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
0x369008c0: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
0x369008d0: fa fa fa fa 00 00 00 00 00 00 00 04 fa fa fa fa
0x369008e0: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
0x369008f0: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
=>0x36900900: fa fa fa fa 00 00 00 00 00 00 00[05]fa fa fa fa
0x36900910: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
0x36900920: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
0x36900930: fa fa fa fa 00 00 00 00 00 00 00 04 fa fa fa fa
0x36900940: 00 00 00 00 00 00 00 04 fa fa fa fa 00 00 00 00
0x36900950: 00 00 00 04 fa fa fa fa 00 00 00 00 00 00 00 04
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
==19799==ABORTING
** Affects: imagemagick (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1537422
Title:
heap-buffer-overflow in coders/meta.c:465
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