heap-buffer-overflow in ecma_builtin_typedarray_prototype_slice

[mka-sec]

Revision

57f389d

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(13);
var arr = new Uint8Array(arrb, 9);
arr.slice(1);

Backtrace

Run with jerry poc.js

=================================================================
==40977==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xf5300f7b at pc 0xf79a68be bp 0xffa46dd8 sp 0xffa469a8
READ of size 3 at 0xf5300f7b thread T0
    #0 0xf79a68bd  (/usr/lib32/libasan.so.4+0x778bd)
    #1 0x5661d6d8 in ecma_builtin_typedarray_prototype_slice /jerryscript/jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.c:1973
    #2 0x566141cf in ecma_builtin_typedarray_prototype_dispatch_routine /jerryscript/jerry-core/ecma/builtin-objects/typedarray/ecma-builtin-typedarray-prototype.inc.h:76
    #3 0x56612be1 in ecma_builtin_dispatch_routine /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtins.c:1025
    #4 0x56612e42 in ecma_builtin_dispatch_call /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtins.c:1050
    #5 0x56634b53 in ecma_op_function_call /jerryscript/jerry-core/ecma/operations/ecma-function-object.c:729
    #6 0x566b9bdf in opfunc_call /jerryscript/jerry-core/vm/vm.c:581
    #7 0x566ced83 in vm_execute /jerryscript/jerry-core/vm/vm.c:3622
    #8 0x566cf632 in vm_run /jerryscript/jerry-core/vm/vm.c:3742
    #9 0x566b8a45 in vm_run_global /jerryscript/jerry-core/vm/vm.c:282
    #10 0x56583a9b in jerry_run /jerryscript/jerry-core/api/jerry.c:570
    #11 0x565803ee in main /jerryscript/jerry-main/main-unix.c:743
    #12 0xf776ee80 in __libc_start_main (/lib32/libc.so.6+0x18e80)
    #13 0x5657dcc0  (/home/xyz/jerryscript/tmpmaster/jerry+0x15cc0)

0xf5300f7b is located 6 bytes to the right of 37-byte region [0xf5300f50,0xf5300f75)
allocated by thread T0 here:
    #0 0xf7a14f34 in malloc (/usr/lib32/libasan.so.4+0xe5f34)
    #1 0x56663b51 in jmem_heap_alloc /jerryscript/jerry-core/jmem/jmem-heap.c:258
    #2 0x56663bc9 in jmem_heap_gc_and_alloc_block /jerryscript/jerry-core/jmem/jmem-heap.c:293
    #3 0x565b2342 in jmem_heap_alloc_block /jerryscript/jerry-core/jmem/jmem-heap.c:327
    #4 0x565b2342 in ecma_alloc_extended_object /jerryscript/jerry-core/ecma/base/ecma-alloc.c:109
    #5 0x565b2342 in ecma_create_object /jerryscript/jerry-core/ecma/base/ecma-helpers.c:81
    #6 0x566239b8 in ecma_arraybuffer_new_object /jerryscript/jerry-core/ecma/operations/ecma-arraybuffer-object.c:49
    #7 0x56623f18 in ecma_op_create_arraybuffer_object /jerryscript/jerry-core/ecma/operations/ecma-arraybuffer-object.c:149
    #8 0x565d0532 in ecma_builtin_arraybuffer_dispatch_construct /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtin-arraybuffer.c:94
    #9 0x566130d6 in ecma_builtin_dispatch_construct /jerryscript/jerry-core/ecma/builtin-objects/ecma-builtins.c:1084
    #10 0x56636152 in ecma_op_function_construct /jerryscript/jerry-core/ecma/operations/ecma-function-object.c:1077
    #11 0x566ba1fe in opfunc_construct /jerryscript/jerry-core/vm/vm.c:665
    #12 0x566ceda9 in vm_execute /jerryscript/jerry-core/vm/vm.c:3634
    #13 0x566cf632 in vm_run /jerryscript/jerry-core/vm/vm.c:3742
    #14 0x566b8a45 in vm_run_global /jerryscript/jerry-core/vm/vm.c:282
    #15 0x56583a9b in jerry_run /jerryscript/jerry-core/api/jerry.c:570
    #16 0x565803ee in main /jerryscript/jerry-main/main-unix.c:743
    #17 0xf776ee80 in __libc_start_main (/lib32/libc.so.6+0x18e80)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/usr/lib32/libasan.so.4+0x778bd) 
Shadow bytes around the buggy address:
  0x3ea60190: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea601a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea601b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea601c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea601d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x3ea601e0: fa fa fa fa fa fa fa fa fa fa 00 00 00 00 05[fa]
  0x3ea601f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea60200: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea60210: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea60220: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x3ea60230: 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
==40977==ABORTING