out-of-bounds read in coders/psd.c:797 ReadPSDChannelPixels
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
imagemagick (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
This bug was found while fuzzing ImageMagick with afl-fuzz
Tested on ImageMagick version d8382f9c0ffa520
Command: magick infile /dev/null
Build info:
#Configure command:
CC=afl-clang-fast CXX=afl-
#Make command:
CC=afl-clang-fast CXX=afl-
ASAN output:
==6043==ERROR: AddressSanitizer: heap-buffer-
READ of size 1 at 0xb5b07eb9 thread T0
#0 0x877cbca in ReadPSDChannelP
#1 0x8776ccb in ReadPSDChannelRaw /home/user/
#2 0x875eb8f in ReadPSDMergedImage /home/user/
#3 0x875eb8f in ReadPSDImage /home/user/
#4 0x8a8b97a in ReadImage /home/user/
#5 0x8a937ef in ReadImages /home/user/
#6 0x93754a9 in CLINoImageOperator /home/user/
#7 0x937d98f in CLIOption /home/user/
#8 0x910afad in ProcessCommandO
#9 0x910e325 in MagickImageCommand /home/user/
#10 0x9112809 in MagickCommandGe
#11 0x80de10d in MagickMain /home/user/
#12 0x80de10d in main /home/user/
#13 0xb748ca82 in __libc_start_main /build/
#14 0x80ddf34 in _start (/home/
0xb5b07eb9 is located 0 bytes to the right of 9-byte region [0xb5b07eb0,
allocated by thread T0 here:
#0 0x80c6b61 in malloc (/home/
#1 0x81939e9 in AcquireMagickMemory /home/user/
#2 0x81939e9 in AcquireQuantumM
#3 0x8a8b97a in ReadImage /home/user/
#4 0x8a937ef in ReadImages /home/user/
#5 0x93754a9 in CLINoImageOperator /home/user/
#6 0x937d98f in CLIOption /home/user/
#7 0x910afad in ProcessCommandO
SUMMARY: AddressSanitizer: heap-buffer-
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
summary: |
- heap-buffer-overflow in coders/psd.c:797 ReadPSDChannelPixels + out-of-bounds read in coders/psd.c:797 ReadPSDChannelPixels |
information type: | Public → Public Security |
Changed in imagemagick (Ubuntu): | |
status: | New → Confirmed |
https:/ /github. com/ImageMagick /ImageMagick/ issues/ 83