$ ./jsish/jsish poc.js
=================================================================
==50188==ERROR: AddressSanitizer: heap-use-after-free on address 0x603000000228 at pc 0x55ccf1df02ee bp 0x7ffcb1d1b0a0 sp 0x7ffcb1d1b090
READ of size 1 at 0x603000000228 thread T0
#0 0x55ccf1df02ed in jsi_ValueLookupBase src/jsiValue.c:980#1 0x55ccf1df1175 in jsi_ValueLookupBase src/jsiValue.c:1007#2 0x55ccf1df1175 in jsi_ValueSubscript src/jsiValue.c:1016#3 0x55ccf211ad47 in jsiEvalSubscript src/jsiEval.c:997#4 0x55ccf211ad47 in jsiEvalCodeSub src/jsiEval.c:1283#5 0x55ccf213315e in jsi_evalcode src/jsiEval.c:2204#6 0x55ccf2137274 in jsi_evalStrFile src/jsiEval.c:2665#7 0x55ccf1e2666a in Jsi_Main src/jsiInterp.c:936#8 0x55ccf262b03a in jsi_main src/main.c:47#9 0x7fc99b738bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)#10 0x55ccf1dba969 in _start (/usr/local/bin/jsish+0xe8969)
0x603000000228 is located 8 bytes inside of 32-byte region [0x603000000220,0x603000000240)
freed by thread T0 here:
#0 0x7fc99c3a77a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8)#1 0x55ccf1ddb6cf in Jsi_DecrRefCount src/jsiValue.c:52
previously allocated by thread T0 here:
#0 0x7fc99c3a7d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)#1 0x55ccf1e2baa4 in Jsi_Calloc src/jsiUtils.c:57
SUMMARY: AddressSanitizer: heap-use-after-free src/jsiValue.c:980 in jsi_ValueLookupBase
Shadow bytes around the buggy address:
0x0c067fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c067fff8000: fa fa 00 00 00 00 fa fa 00 00 07 fa fa fa 00 00
0x0c067fff8010: 00 00 fa fa 00 00 03 fa fa fa 00 00 00 00 fa fa
0x0c067fff8020: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00
0x0c067fff8030: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00
=>0x0c067fff8040: 00 00 fa fa fd[fd]fd fd fa fa 00 00 00 00 fa fa
0x0c067fff8050: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00
0x0c067fff8060: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00
0x0c067fff8070: 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa
0x0c067fff8080: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00
0x0c067fff8090: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00
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
==50188==ABORTING
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
$ ./jsish/jsish poc.js ================================================================= ==50188==ERROR: AddressSanitizer: heap-use-after-free on address 0x603000000228 at pc 0x55ccf1df02ee bp 0x7ffcb1d1b0a0 sp 0x7ffcb1d1b090 READ of size 1 at 0x603000000228 thread T0 #0 0x55ccf1df02ed in jsi_ValueLookupBase src/jsiValue.c:980 #1 0x55ccf1df1175 in jsi_ValueLookupBase src/jsiValue.c:1007 #2 0x55ccf1df1175 in jsi_ValueSubscript src/jsiValue.c:1016 #3 0x55ccf211ad47 in jsiEvalSubscript src/jsiEval.c:997 #4 0x55ccf211ad47 in jsiEvalCodeSub src/jsiEval.c:1283 #5 0x55ccf213315e in jsi_evalcode src/jsiEval.c:2204 #6 0x55ccf2137274 in jsi_evalStrFile src/jsiEval.c:2665 #7 0x55ccf1e2666a in Jsi_Main src/jsiInterp.c:936 #8 0x55ccf262b03a in jsi_main src/main.c:47 #9 0x7fc99b738bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6) #10 0x55ccf1dba969 in _start (/usr/local/bin/jsish+0xe8969) 0x603000000228 is located 8 bytes inside of 32-byte region [0x603000000220,0x603000000240) freed by thread T0 here: #0 0x7fc99c3a77a8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7a8) #1 0x55ccf1ddb6cf in Jsi_DecrRefCount src/jsiValue.c:52 previously allocated by thread T0 here: #0 0x7fc99c3a7d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28) #1 0x55ccf1e2baa4 in Jsi_Calloc src/jsiUtils.c:57 SUMMARY: AddressSanitizer: heap-use-after-free src/jsiValue.c:980 in jsi_ValueLookupBase Shadow bytes around the buggy address: 0x0c067fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c067fff8000: fa fa 00 00 00 00 fa fa 00 00 07 fa fa fa 00 00 0x0c067fff8010: 00 00 fa fa 00 00 03 fa fa fa 00 00 00 00 fa fa 0x0c067fff8020: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 0x0c067fff8030: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 =>0x0c067fff8040: 00 00 fa fa fd[fd]fd fd fa fa 00 00 00 00 fa fa 0x0c067fff8050: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 0x0c067fff8060: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 0x0c067fff8070: 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 0x0c067fff8080: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 0x0c067fff8090: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 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 ==50188==ABORTINGCredits: Found by OWL337 team.
The text was updated successfully, but these errors were encountered: