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cesanta / mjs

Embedded JavaScript engine for C/C++
https://mongoose-os.com
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AddressSanitizer: stack-buffer-overflow in mjs_execute mjs.c:9650 #167

Open Clingto opened 3 years ago

Clingto commented 3 years ago

System info:
Ubuntu 16.04.6 LTS, X64, gcc 5.4.0, mjs (latest master 4c870e5)
Compile Command:

$ gcc -fsanitize=address -fno-omit-frame-pointer -DMJS_MAIN mjs.c -ldl -g -o mjs

Run Command:

$ mjs -f $POC

POC file:
https://github.com/Clingto/POC/blob/master/MSA/mjs/mjs-9522-mjs_execute-stack-overflow

ASAN info:

ASAN:SIGSEGV
=================================================================
==9792==ERROR: AddressSanitizer: stack-overflow on address 0x7ffc50dbbc70 (pc 0x000000425735 bp 0x7ffc50dafdf0 sp 0x7ffc50dbbc78 T0)
    #0 0x425734 in mjs_execute  test/mjs-uaf/build_asan/mjs.c:9650
    #1 0x4265f1 in mjs_exec_internal  test/mjs-uaf/build_asan/mjs.c:9866
    #2 0x426873 in mjs_exec_file  test/mjs-uaf/build_asan/mjs.c:9889
    #3 0x431348 in main  test/mjs-uaf/build_asan/mjs.c:12228
    #4 0x7fa093d7e82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #5 0x401af8 in _start ( test/mjs-uaf/bin_asan/bin/mjs_bin+0x401af8)

SUMMARY: AddressSanitizer: stack-overflow  test/mjs-uaf/build_asan/mjs.c:9650 mjs_execute
==9792==ABORTING