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==50415==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60300000efc2 at pc 0x55885e14b03a bp 0x7fff88438ab0 sp 0x7fff88438aa0
READ of size 1 at 0x60300000efc2 thread T0
#0 0x55885e14b039 in string_hash /home/seviezhou/swftools/lib/q.c:727
#1 0x55885e14e879 in dict_put /home/seviezhou/swftools/lib/q.c:1146
#2 0x55885e15486b in array_append /home/seviezhou/swftools/lib/q.c:1531
#3 0x55885e0c2c7d in pool_read as3/pool.c:1130
#4 0x55885e0aef44 in swf_ReadABC as3/abc.c:748
#5 0x55885e024003 in main /home/seviezhou/swftools/src/swfdump.c:1577
#6 0x7fde3d2e9b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#7 0x55885e027439 in _start (/home/seviezhou/swftools/src/swfdump+0xd0439)
0x60300000efc2 is located 0 bytes to the right of 18-byte region [0x60300000efb0,0x60300000efc2)
allocated by thread T0 here:
#0 0x7fde3d96e612 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98612)
#1 0x55885e162ca7 in rfx_alloc /home/seviezhou/swftools/lib/mem.c:30
#2 0x55885e171096 (/home/seviezhou/swftools/src/swfdump+0x21a096)
SUMMARY: AddressSanitizer: heap-buffer-overflow /home/seviezhou/swftools/lib/q.c:727 string_hash
Shadow bytes around the buggy address:
0x0c067fff9da0: fa fa 00 00 00 fa fa fa 00 00 00 fa fa fa 00 00
0x0c067fff9db0: 00 fa fa fa 00 00 00 fa fa fa 00 00 00 fa fa fa
0x0c067fff9dc0: 00 00 00 fa fa fa 00 00 00 fa fa fa 00 00 00 fa
0x0c067fff9dd0: fa fa 00 00 00 fa fa fa 00 00 00 fa fa fa 00 00
0x0c067fff9de0: 00 fa fa fa 00 00 00 fa fa fa 00 00 00 fa fa fa
=>0x0c067fff9df0: fd fd fd fd fa fa 00 00[02]fa fa fa 00 00 02 fa
0x0c067fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fff9e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fff9e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fff9e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fff9e40: 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
==50415==ABORTING
System info
Ubuntu x86_64, clang 6.0, swfdump (latest master fad6c2)
Command line
./src/swfdump -D @@
AddressSanitizer output
POC
heap-overflow-string_hash-q-727.zip
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