heap-buffer-overflow in ecma_builtin_typedarray_prototype_copy_within

[mka-sec]

Revision

c05686b

Build

./tools/build.py --clean --debug --compile-flag=-fsanitize=address
--compile-flag=-m32 --compile-flag=-fno-omit-frame-pointer
--compile-flag=-fno-common --compile-flag=-g
--strip=off --system-allocator=on --logging=on
--error-messages=on --profile=es2015-subset

OS

Linux 4.15.0-58-generic #64-Ubuntu x86_64 GNU/Linux

Test case

var arrb = new ArrayBuffer(2147483648);
var arr = new Uint8Array(arrb);
arr.copyWithin({}, 8)

Backtrace

Run with jerry poc.js

=================================================================
==1326==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xf54fe818 at pc 0xf79c5836 bp 0xffcf8508 sp 0xffcf80d8
READ of size 2147483648 at 0xf54fe818 thread T0
    #0 0xf79c5835 in memmove (/usr/lib32/libasan.so.4+0x7a835)
    #1 0x5668797a in ecma_builtin_typedarray_prototype_copy_within /jerryscript/jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.c:1900
    #2 0x5667ea93 in ecma_builtin_typedarray_prototype_dispatch_routine /jerryscript/jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.inc.h:75
    #3 0x5667d4bb in ecma_builtin_dispatch_routine /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtins.c:1021
    #4 0x5667d71c in ecma_builtin_dispatch_call /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtins.c:1046
    #5 0x566a01b5 in ecma_op_function_call /jerryscript/jerry-core/ecma/operations/ecma-function-object.c:729
    #6 0x5672f59a in opfunc_call /jerryscript/jerry-core/vm/vm.c:581
    #7 0x5674494f in vm_execute /jerryscript/jerry-core/vm/vm.c:3636
    #8 0x567451fe in vm_run /jerryscript/jerry-core/vm/vm.c:3756
    #9 0x5672e400 in vm_run_global /jerryscript/jerry-core/vm/vm.c:282
    #10 0x565ede50 in jerry_run /jerryscript/jerry-core/api/jerry.c:576
    #11 0x565ea63e in main /jerryscript/jerry-main/main-unix.c:743
    #12 0xf778ae80 in __libc_start_main (/lib32/libc.so.6+0x18e80)
    #13 0x565e7f10  (/home/xyz/jerryscript/tmpmaster/jerry+0x15f10)

0xf54fe818 is located -2147483624 bytes inside of 2147483672-byte region [0x754fe800,0xf54fe818)
allocated by thread T0 here:
    #0 0xf7a30f34 in malloc (/usr/lib32/libasan.so.4+0xe5f34)
    #1 0x566cf549 in jmem_heap_alloc /jerryscript/jerry-core/jmem/jmem-heap.c:258
    #2 0x566cf5c1 in jmem_heap_gc_and_alloc_block /jerryscript/jerry-core/jmem/jmem-heap.c:293
    #3 0x5661c589 in jmem_heap_alloc_block /jerryscript/jerry-core/jmem/jmem-heap.c:327
    #4 0x5661c589 in ecma_alloc_extended_object /jerryscript/jerry-core/ecma/base/ecma-alloc.c:109
    #5 0x5661c589 in ecma_create_object /jerryscript/jerry-core/ecma/base/ecma-helpers.c:81
    #6 0x5668ed8b in ecma_arraybuffer_new_object /jerryscript/jerry-core/ecma/operations/ecma-arraybuffer-object.c:49
    #7 0x5668f2eb in ecma_op_create_arraybuffer_object /jerryscript/jerry-core/ecma/operations/ecma-arraybuffer-object.c:149
    #8 0x5663a8f9 in ecma_builtin_arraybuffer_dispatch_construct /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtin-arraybuffer.c:94
    #9 0x5667d9b0 in ecma_builtin_dispatch_construct /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtins.c:1080
    #10 0x566a17b4 in ecma_op_function_construct /jerryscript/jerry-core/ecma/operations/ecma-function-object.c:1077
    #11 0x5672fbb9 in opfunc_construct /jerryscript/jerry-core/vm/vm.c:665
    #12 0x56744975 in vm_execute /jerryscript/jerry-core/vm/vm.c:3648
    #13 0x567451fe in vm_run /jerryscript/jerry-core/vm/vm.c:3756
    #14 0x5672e400 in vm_run_global /jerryscript/jerry-core/vm/vm.c:282
    #15 0x565ede50 in jerry_run /jerryscript/jerry-core/api/jerry.c:576
    #16 0x565ea63e in main /jerryscript/jerry-main/main-unix.c:743
    #17 0xf778ae80 in __libc_start_main (/lib32/libc.so.6+0x18e80)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/usr/lib32/libasan.so.4+0x7a835) in memmove
Shadow bytes around the buggy address:
  0x3ea9fcb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x3ea9fcc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x3ea9fcd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x3ea9fce0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x3ea9fcf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x3ea9fd00: 00 00 00[fa]fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea9fd10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea9fd20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea9fd30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea9fd40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea9fd50: 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
==1326==ABORTING

[rerobika]

cc @szilagyiadam .