SIGSEGV in function newVar_N at decompile.c:714

[JsHuang]

A Segmentation fault bug was found in function newVar_N() (decompile.c:714)

Program received signal SIGSEGV, Segmentation fault.
strlen () at ../sysdeps/x86_64/strlen.S:106
106	../sysdeps/x86_64/strlen.S: No such file or directory.
(gdb) bt
#0  strlen () at ../sysdeps/x86_64/strlen.S:106
#1  0x0000000000408ff0 in newVar_N (var=0x0, var2=0x425668 "[", var3=0x0, var4=0x4259f8 "](", pop_counter=0, 
    final=0x42502a ")") at decompile.c:714
#2  0x000000000040feb3 in decompileCALLMETHOD (n=23, actions=0x631500, maxn=24) at decompile.c:2937
#3  0x0000000000411190 in decompileAction (n=23, actions=0x631500, maxn=24) at decompile.c:3360
#4  0x0000000000411546 in decompileActions (n=24, actions=0x631500, indent=0) at decompile.c:3494
#5  0x0000000000411648 in decompile5Action (n=24, actions=0x631500, indent=0) at decompile.c:3517
#6  0x0000000000403528 in outputSWF_DEFINEBUTTON2 (pblock=0x631250) at outputscript.c:931
#7  0x0000000000406970 in outputBlock (type=34, blockp=0x631250, stream=0x630010) at outputscript.c:2083
#8  0x00000000004073e8 in readMovie (f=0x630010) at main.c:281
#9  0x0000000000407734 in main (argc=2, argv=0x7fffffffe448) at main.c:354

to reproduce it ,run swftophp with segmentaion_fault_decompile_714

./swftophp segmentaion_fault_decompile_714

poc file https://github.com/JsHuang/libming-poc/blob/master/swftophp/segmentaion_fault_decompile_714

credit: ADLab of Venustech

segmentaion_fault_decompile_714.zip