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$ ./jsish/jsish poc.js
==21392==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x604000018e48 at pc 0x55de4613ce12 bp 0x7ffdf013bf00 sp 0x7ffdf013bef0
WRITE of size 8 at 0x604000018e48 thread T0
#0 0x55de4613ce11 in RegExp_constructor src/jsiRegexp.c:176#1 0x55de4619b818 in jsi_FuncCallSub src/jsiProto.c:244#2 0x55de46118fec in jsi_FunctionInvoke src/jsiFunc.c:777#3 0x55de46118fec in Jsi_FunctionInvoke src/jsiFunc.c:789#4 0x55de46194ad6 in jsi_FuncBindCall src/jsiProto.c:299#5 0x55de4619b818 in jsi_FuncCallSub src/jsiProto.c:244#6 0x55de4646571a in jsiFunctionSubCall src/jsiEval.c:796#7 0x55de4646571a in jsiEvalFunction src/jsiEval.c:837#8 0x55de4646571a in jsiEvalCodeSub src/jsiEval.c:1264#9 0x55de4647915e in jsi_evalcode src/jsiEval.c:2204#10 0x55de4619c834 in jsi_FuncCallSub src/jsiProto.c:220#11 0x55de464655ab in jsiFunctionSubCall src/jsiEval.c:796#12 0x55de464655ab in jsiEvalFunction src/jsiEval.c:837#13 0x55de464655ab in jsiEvalCodeSub src/jsiEval.c:1264#14 0x55de4647915e in jsi_evalcode src/jsiEval.c:2204#15 0x55de4647d274 in jsi_evalStrFile src/jsiEval.c:2665#16 0x55de4616c66a in Jsi_Main src/jsiInterp.c:936#17 0x55de4697103a in jsi_main src/main.c:47#18 0x7ff1757adbf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)#19 0x55de46100969 in _start (/usr/local/bin/jsish+0xe8969)
0x604000018e48 is located 8 bytes to the left of 48-byte region [0x604000018e50,0x604000018e80)
allocated by thread T0 here:
#0 0x7ff17641cd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)#1 0x55de46171aa4 in Jsi_Calloc src/jsiUtils.c:57
SUMMARY: AddressSanitizer: heap-buffer-overflow src/jsiRegexp.c:176 in RegExp_constructor
Shadow bytes around the buggy address:
0x0c087fffb170: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa
0x0c087fffb180: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa
0x0c087fffb190: fa fa 00 00 00 00 00 00 fa fa fd fd fd fd fd fa
0x0c087fffb1a0: fa fa 00 00 00 00 00 00 fa fa fd fd fd fd fd fa
0x0c087fffb1b0: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa
=>0x0c087fffb1c0: fa fa 00 00 00 00 00 04 fa[fa]00 00 00 00 00 00
0x0c087fffb1d0: fa fa fd fd fd fd fd fa fa fa 00 00 00 00 00 06
0x0c087fffb1e0: fa fa 00 00 00 00 00 00 fa fa fd fd fd fd fd fa
0x0c087fffb1f0: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa
0x0c087fffb200: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa
0x0c087fffb210: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd 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
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
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
Left alloca redzone: ca
Right alloca redzone: cb
Credits: Found by OWL337 team.
The text was updated successfully, but these errors were encountered:
Jsish revision
Commit: 9fa798e
Version: v3.5.0
Build platform
Ubuntu 18.04.5 LTS (Linux 5.4.0-44-generic x86_64)
Build steps
Test case
Execution steps & Output
Credits: Found by OWL337 team.
The text was updated successfully, but these errors were encountered: