tiffcrop: heap-buffer-overflow in /tiff-4.5.0/tools/tiffcrop.c:4106:24 in extractContigSamplesShifted32bits

Summary

There is a buffer overflow in /tiff-4.5.0/tools/tiffcrop.c:4106:24 in extractContigSamplesShifted32bits. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file.

Version

./tiffcrop -v
Library Release: LIBTIFF, Version 4.5.0
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.
Tiffcp code: Copyright (c) 1988-1997 Sam Leffler
           : Copyright (c) 1991-1997 Silicon Graphics, Inc
Tiffcrop additions: Copyright (c) 2007-2010 Richard Nolde

Platform

uname -a 
Linux user-GE40-2PC-Dragon-Eyes 5.19.0-40-generic #41~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 31 16:00:14 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

ASAN_heap-buffer-overflow

==950398==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6160000002e2 at pc 0x562a2c655b66 bp 0x7ffd43628040 sp 0x7ffd43628038
WRITE of size 1 at 0x6160000002e2 thread T0
    #0 0x562a2c655b65 in extractContigSamplesShifted32bits /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c:4106:24
    #1 0x562a2c61fef4 in extractCompositeRegions /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c:7490:33
    #2 0x562a2c61fef4 in processCropSelections /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c:8504:13
    #3 0x562a2c61fef4 in main /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c:2807:21
    #4 0x7f160c829d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #5 0x7f160c829e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #6 0x562a2c54d284 in _start (/home/user/fuzzing_tiff/install/bin/tiffcrop+0xd7284) (BuildId: b74ccf7dfc4e9a79)

0x6160000002e2 is located 18 bytes to the right of 592-byte region [0x616000000080,0x6160000002d0)
allocated by thread T0 here:
    #0 0x562a2c5d00ce in malloc (/home/user/fuzzing_tiff/install/bin/tiffcrop+0x15a0ce) (BuildId: b74ccf7dfc4e9a79)
    #1 0x562a2c61f634 in _TIFFmalloc /home/user/fuzzing_tiff/tiff-4.5.0/libtiff/tif_unix.c:326:13
    #2 0x562a2c61f634 in processCropSelections /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c
    #3 0x562a2c61f634 in main /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c:2807:21
    #4 0x7f160c829d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/user/fuzzing_tiff/tiff-4.5.0/tools/tiffcrop.c:4106:24 in extractContigSamplesShifted32bits
Shadow bytes around the buggy address:
  0x0c2c7fff8000: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c7fff8010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c2c7fff8020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c2c7fff8030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c2c7fff8040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c2c7fff8050: 00 00 00 00 00 00 00 00 00 00 fa fa[fa]fa fa fa
  0x0c2c7fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c7fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c7fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c7fff8090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c7fff80a0: 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
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==950398==ABORTING

Steps to reproduce

./tiffcrop -E right  -z 1,1,2048,2048:1,2049,2048,4097 -i -s $poc_file /tmp/foo

POC File

poc_4106

Credit

Gandalf4a@QAXsrc