heap overflow
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
jhead (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
# enviroment
ubuntu 18.04
./jhead poc
# version
3.04
# asan out
=======
==33010==ERROR: AddressSanitizer: heap-buffer-
READ of size 1 at 0x6190000004e5 thread T0
#0 0x5618aeedc757 in Get16u exif.c:325
#1 0x5618aeef223e in ProcessGpsInfo gpsinfo.c:62
#2 0x5618aeee54d5 in ProcessExifDir exif.c:866
#3 0x5618aeee5529 in ProcessExifDir exif.c:852
#4 0x5618aeee695a in process_EXIF exif.c:1041
#5 0x5618aeed2382 in ReadJpegSections jpgfile.c:287
#6 0x5618aeed390e in ReadJpegSections jpgfile.c:126
#7 0x5618aeed390e in ReadJpegFile jpgfile.c:379
#8 0x5618aeec966c in ProcessFile jhead.c:905
#9 0x5618aeec4b2e in main jhead.c:1756
#10 0x7f9cfffb1bf6 in __libc_start_main (/lib/x86_
#11 0x5618aeec7279 in _start (/home/
0x6190000004e5 is located 1 bytes to the right of 1124-byte region [0x619000000080
allocated by thread T0 here:
#0 0x7f9d007fdb40 in __interceptor_
#1 0x5618aeed0d6b in ReadJpegSections jpgfile.c:173
SUMMARY: AddressSanitizer: heap-buffer-
Shadow bytes around the buggy address:
0x0c327fff8040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c327fff8050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c327fff8060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c327fff8070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c327fff8080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c327fff8090: 00 00 00 00 00 00 00 00 00 00 00 00[04]fa fa fa
0x0c327fff80a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c327fff80b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c327fff80c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c327fff80d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c327fff80e0: 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
==33010==ABORTING