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Description
System info
Ubuntu x86_64, clang 6.0, swfdump (latest master fad6c2)
Command line
./src/swfdump -D @@
AddressSanitizer output
=================================================================
==16659==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000ef95 at pc 0x7f6f9085a1fb bp 0x7ffd450e1b90 sp 0x7ffd450e1338
READ of size 1 at 0x60200000ef95 thread T0
#0 0x7f6f9085a1fa in strlen (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x701fa)
#1 0x564d72dccc05 in swf_GetPlaceObject modules/swfobject.c:195
#2 0x564d72da4174 in main /home/seviezhou/swftools/src/swfdump.c:1341
#3 0x7f6f901fdb96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#4 0x564d72da8439 in _start (/home/seviezhou/swftools/src/swfdump+0xd0439)
0x60200000ef95 is located 0 bytes to the right of 5-byte region [0x60200000ef90,0x60200000ef95)
allocated by thread T0 here:
#0 0x7f6f90882612 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98612)
#1 0x564d72ee3ca7 in rfx_alloc /home/seviezhou/swftools/lib/mem.c:30
#2 0x564d72ef2096 (/home/seviezhou/swftools/src/swfdump+0x21a096)
SUMMARY: AddressSanitizer: heap-buffer-overflow ??:0 strlen
Shadow bytes around the buggy address:
0x0c047fff9da0: fa fa fd fd fa fa fd fa fa fa fd fd fa fa 06 fa
0x0c047fff9db0: fa fa 00 00 fa fa 06 fa fa fa 00 00 fa fa 06 fa
0x0c047fff9dc0: fa fa 00 00 fa fa 06 fa fa fa 00 00 fa fa 06 fa
0x0c047fff9dd0: fa fa 00 00 fa fa 06 fa fa fa 00 00 fa fa fd fa
0x0c047fff9de0: fa fa 00 00 fa fa 00 fa fa fa 05 fa fa fa 00 01
=>0x0c047fff9df0: fa fa[05]fa fa fa 00 06 fa fa 04 fa fa fa 03 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
==16659==ABORTING
POC
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