Public bug reported:
=================================================================
==31124==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60200000eff2 at pc 0x7faf87682676 bp 0x7fff92fb4f10 sp 0x7fff92fb46b8
READ of size 4 at 0x60200000eff2 thread T0
#0 0x7faf87682675 in memcmp (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x77675)
#1 0x41c42d in ReadJpegSections
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jpgfile.c:286
#2 0x41f62d in ReadJpegSections
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jpgfile.c:126
#3 0x41f62d in ReadJpegFile
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jpgfile.c:379
#4 0x411987 in ProcessFile
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jhead.c:905
#5 0x4036ca in main
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jhead.c:1756
#6 0x7faf8624b83f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2083f)
#7 0x40d498 in _start
(/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jhead+0x40d498)
0x60200000eff2 is located 0 bytes to the right of 2-byte region
[0x60200000eff0,0x60200000eff2)
allocated by thread T0 here:
#0 0x7faf876a3602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
#1 0x41beaa in ReadJpegSections
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jpgfile.c:173
#2 0x41f62d in ReadJpegSections
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jpgfile.c:126
#3 0x41f62d in ReadJpegFile
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jpgfile.c:379
#4 0x411987 in ProcessFile
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jhead.c:905
#5 0x4036ca in main
/home/mondaylord/Documents/SMSE-AFL/bin/jhead-3.04/jhead.c:1756
#6 0x7faf8624b83f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2083f)
SUMMARY: AddressSanitizer: heap-buffer-overflow ??:0 memcmp
Shadow bytes around the buggy address:
0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9db0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9dc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9dd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9de0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff9df0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa[02]fa
0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff9e40: 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
==31124==ABORTING
** Affects: jhead (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1890228
Title:
heap buffer overflow crashes on memcmp
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