Public bug reported:
heap-buffer-overflow on jhead-3.04/exif.c:336 Get32s when we run ./jhead
./input/poc.
lbb@lbb ./jhead ./input/id_043
Nonfatal Error : './input/id_043' Suspicious offset of first Exif IFD value
Nonfatal Error : './input/id_043' Maximum Exif directory nesting exceeded
(corrupt Exif header)
Nonfatal Error : './input/id_043' Illegal number format 32768 for tag 1000 in
Exif
Nonfatal Error : './input/id_043' Maximum Exif directory nesting exceeded
(corrupt Exif header)
Nonfatal Error : './input/id_043' Illegal number format 95 for Exif gps tag 002a
Nonfatal Error : './input/id_043' Illegal number format 62152 for Exif gps tag
91bf
Nonfatal Error : './input/id_043' Illegal number format 65529 for Exif gps tag
ffff
Nonfatal Error : './input/id_043' Illegal number format 0 for Exif gps tag 00ff
Nonfatal Error : './input/id_043' Illegal number format 0 for Exif gps tag 7c00
Nonfatal Error : './input/id_043' Inappropriate format (4) for Exif GPS
coordinates!
Nonfatal Error : './input/id_043' Illegal number format 65535 for Exif gps tag
1f00
Nonfatal Error : './input/id_043' Illegal number format 128 for Exif gps tag
0010
Nonfatal Error : './input/id_043' Illegal number format 0 for Exif gps tag 0087
Nonfatal Error : './input/id_043' Illegal number format 128 for Exif gps tag
0010
Nonfatal Error : './input/id_043' Illegal number format 0 for Exif gps tag 0087
Nonfatal Error : './input/id_043' Illegal number format 0 for Exif gps tag 0092
Nonfatal Error : './input/id_043' Illegal number format 0 for Exif gps tag 0088
Nonfatal Error : './input/id_043' Illegal number format 257 for Exif gps tag
2d00
Nonfatal Error : './input/id_043' Illegal number format 23110 for Exif gps tag
4146
Nonfatal Error : './input/id_043' Inappropriate format (12) for Exif GPS
coordinates!
=================================================================
==25863==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x611000009fdd at pc 0x00000040aeff bp 0x7ffe1a579f50 sp 0x7ffe1a579f40
READ of size 1 at 0x611000009fdd thread T0
#0 0x40aefe in Get32s
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:336
#1 0x4115dc in ProcessGpsInfo
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/gpsinfo.c:138
#2 0x40d9a3 in ProcessExifDir
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:866
#3 0x40d91c in ProcessExifDir
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:852
#4 0x40d91c in ProcessExifDir
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:852
#5 0x40d91c in ProcessExifDir
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:852
#6 0x40d91c in ProcessExifDir
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:852
#7 0x40e09a in process_EXIF
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:1041
#8 0x408318 in ReadJpegSections
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jpgfile.c:287
#9 0x408581 in ReadJpegFile
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jpgfile.c:379
#10 0x405039 in ProcessFile
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jhead.c:905
#11 0x40267d in main
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jhead.c:1756
#12 0x7ff18ec8a82f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#13 0x403c38 in _start
(/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jhead+0x403c38)
0x611000009fdd is located 3 bytes to the right of 218-byte region
[0x611000009f00,0x611000009fda)
allocated by thread T0 here:
#0 0x7ff18f3d5602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
#1 0x40798b in ReadJpegSections
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jpgfile.c:173
#2 0x408581 in ReadJpegFile
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jpgfile.c:379
#3 0x405039 in ProcessFile
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jhead.c:905
#4 0x40267d in main
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/jhead.c:1756
#5 0x7ff18ec8a82f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/lbb/afl-experient/Tests/ASAN/jhead-3.04/exif.c:336 Get32s
Shadow bytes around the buggy address:
0x0c227fff93a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff93b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff93c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff93d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff93e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c227fff93f0: 00 00 00 00 00 00 00 00 00 00 00[02]fa fa fa fa
0x0c227fff9400: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff9410: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff9420: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff9430: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c227fff9440: 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
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
==25863==ABORTING
** Affects: jhead (Ubuntu)
Importance: Undecided
Status: New
** Tags: heap-buffer-overflow jhead
** Attachment added: "POC"
https://bugs.launchpad.net/bugs/1858746/+attachment/5318438/+files/id_043
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https://bugs.launchpad.net/bugs/1858746
Title:
heap-buffer-overflow on jhead-3.04/exif.c:336 Get32s
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