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heap-use-after-free ./jsish/src/jsiValue.c:41:5 in Jsi_DecrRefCount #99
Comments
Thanks for the bug reports, but jsish is no longer being developed or
supported.
…On Fri, Jan 19, 2024 at 7:25 PM Seyeon Jeong ***@***.***> wrote:
Jsish revision
Commit: 42c694c
<42c694c>
Version: v3.5.0
Build platform
Ubuntu 20.04.5 LTS (Linux 5.4.0-144-generic x86_64)
Build steps
export JSI__SANITIZE=1
make
Test case testcase
var e = { set foo ( t ) { n ( 42 ) ; } } ; var r = { set foo ( t ) { }, get bar ( ) { }, get foo ( ) { } } ; var o = { set foo ( t ) { n ( 42 ) ; }, set bar ( t ) { }, get foo ( ) { return 42 ; } } ; var a = { set foo ( t ) { }, ownKeys : Object. getOwnPropertyDescriptors, set : function ( func0, r, t, a ) { return true ; } } ; Object. setPrototypeOf ( Object. create ( e ), Object. create ( o ) ) ; Object. setPrototypeOf ( e, r ) ; var var0 = { set foo ( t ) { } } ; var var1 = t. set ; t. foo = 1 ; var var0 ; r = a ; t = new Proxy ( e, r ) ; e = Object. defineProperty ( e, " attr ", { configurable : false, writable : true, value : " foo " } ) ; assert ( Reflect. set ( t, " foo " ). toString ( ) ) ; assertEq ( Reflect. set ( t ( e ), " attr ", 1 ) ) ;
// poc.jsvar e = {};var o = {};Object. setPrototypeOf ( Object. create ( e ), Object. create ( o ) ) ;
Execution steps & Output
$ ./jsish/jsish poc.js
=================================================================
==3944008==ERROR: AddressSanitizer: heap-use-after-free on address 0x603000006b80 at pc 0x0000004ed9dd bp 0x7ffd7aefd1d0 sp 0x7ffd7aefd1c8
READ of size 4 at 0x603000006b80 thread T0
#0 0x4ed9dc in Jsi_DecrRefCount ./jsish/src/jsiValue.c:41:5
#1 0x604e69 in Jsi_ObjFree ./jsish/src/jsiObj.c:362:9
#2 0x606b21 in Jsi_ObjDecrRefCount ./jsish/src/jsiObj.c:443:9
#3 0x4edbf0 in ValueFree ./jsish/src/jsiValue.c:178:13
#4 0x4edbf0 in Jsi_ValueFree ./jsish/src/jsiValue.c:199:5
#5 0x4ed981 in Jsi_DecrRefCount ./jsish/src/jsiValue.c:52:9
#6 0x604ce4 in Jsi_ObjFree ./jsish/src/jsiObj.c:356:17
#7 0x606b21 in Jsi_ObjDecrRefCount ./jsish/src/jsiObj.c:443:9
#8 0x4edbf0 in ValueFree ./jsish/src/jsiValue.c:178:13
#9 0x4edbf0 in Jsi_ValueFree ./jsish/src/jsiValue.c:199:5
#10 0x4ed981 in Jsi_DecrRefCount ./jsish/src/jsiValue.c:52:9
#11 0x766e61 in jsiEvalFunction ./jsish/src/jsiEval.c:854:5
#12 0x766e61 in jsiEvalCodeSub ./jsish/src/jsiEval.c:1269:25
#13 0x780f26 in jsi_evalcode ./jsish/src/jsiEval.c:2227:10
#14 0x78396f in jsi_evalStrFile ./jsish/src/jsiEval.c
#15 0x74a726 in Jsi_EvalFile ./jsish/src/jsiEval.c:2729:12
#16 0x5176d5 in Jsi_Main ./jsish/src/jsiInterp.c:936:18
#17 0xdefaa3 in jsi_main ./jsish/src/main.c:47:26
#18 0x7f4ae1a4d082 in __libc_start_main /build/glibc-wuryBv/glibc-2.31/csu/../csu/libc-start.c:308:16
#19 0x42c9bd in _start (./jsish/jsish+0x42c9bd)
0x603000006b80 is located 0 bytes inside of 32-byte region [0x603000006b80,0x603000006ba0)
freed by thread T0 here:
#0 0x4a4e7d in free (./jsish/jsish+0x4a4e7d)
#1 0x4ed981 in Jsi_DecrRefCount ./jsish/src/jsiValue.c:52:9
previously allocated by thread T0 here:
#0 0x4a5272 in calloc (./jsish/jsish+0x4a5272)
#1 0x53611e in Jsi_Calloc ./jsish/src/jsiUtils.c:57:15
SUMMARY: AddressSanitizer: heap-use-after-free ./jsish/src/jsiValue.c:41:5 in Jsi_DecrRefCount
Shadow bytes around the buggy address:
0x0c067fff8d20: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00
0x0c067fff8d30: 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa
0x0c067fff8d40: 00 00 00 00 fa fa fd fd fd fd fa fa 00 00 00 00
0x0c067fff8d50: fa fa fd fd fd fd fa fa fd fd fd fd fa fa 00 00
0x0c067fff8d60: 00 00 fa fa 00 00 00 00 fa fa fd fd fd fd fa fa
=>0x0c067fff8d70:[fd]fd fd fd fa fa fd fd fd fd fa fa fd fd fd fd
0x0c067fff8d80: fa fa fd fd fd fd fa fa fd fd fd fd fa fa 00 00
0x0c067fff8d90: 00 00 fa fa 00 00 00 00 fa fa fd fd fd fd fa fa
0x0c067fff8da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fff8db0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fff8dc0: 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
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
Shadow gap: cc
==3944008==ABORTING
Credits: @Ye0nny <https://github.com/Ye0nny>, @EJueon
<https://github.com/EJueon> of the seclab-yonsei.
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Jsish revision
Commit: 42c694c
Version: v3.5.0
Build platform
Ubuntu 20.04.5 LTS (Linux 5.4.0-144-generic x86_64)
Build steps
export JSI__SANITIZE=1 make
Test case
testcase
Execution steps & Output
Credits: @Ye0nny, @EJueon of the seclab-yonsei.
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