A recently discovered vulnerability, classified as critical, has been identified in the Axiomatic Bento4 5e7bb34 software package. This vulnerability, designated as CVE-2022-3784, affects the function AP4_Mp4AudioDsiParser::ReadBits within the file Ap4Mp4AudioInfo.cpp of the mp4hls component.

By manipulating this function, an attacker can execute a heap-based buffer overflow attack, which can lead to unauthorized access and potential system compromise. The alarming part is that this attack can be launched remotely, making it a grave concern for organizations and users utilizing the Bento4 software.

Moreover, the exploit for this vulnerability has already been disclosed to the public, increasing the risk of its widespread use by malicious actors. The vulnerability has been assigned the identifier VDB-212563, and organizations should immediately take necessary actions to mitigate the potential damage.

Code snippet showcasing the vulnerability

The vulnerability lies in the affected function AP4_Mp4AudioDsiParser::ReadBits within the file Ap4Mp4AudioInfo.cpp. The following code snippet demonstrates the problematic section:

if (m_BitsAvailable < bits) {
    m_Buffer |= AP4_UI16(m_Source[m_Position]) << (8 - m_BitsAvailable);
    m_BitsAvailable += 8;
    ++m_Position;
}
val = (m_Buffer>>(16-bits)) & ((1<<bits)-1);
m_Buffer <<= bits;
m_BitsAvailable -= bits;

return AP4_SUCCESS;

Original references

For additional information and original sources regarding this critical vulnerability, please refer to the following links:

- CVE Details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3784
- Vulnerability Database (VDB): https://vulnerability-db.com/details/212563

Exploit details

The exploit for CVE-2022-3784 is based on a heap-based buffer overflow attack. A heap-based buffer overflow occurs when a program writes more data than needed to a specific buffer, causing memory corruption, which can lead to unauthorized access and system compromise.

This vulnerability can be exploited remotely, without the need for user interaction or physical access to the target system. An attacker can manipulate data inputs to the AP4_Mp4AudioDsiParser::ReadBits function in a way that triggers the overflow, ultimately opening the door for potential unauthorized access to the target system, compromised data, or even complete system control.

Given that the exploit for this vulnerability has been disclosed to the public, organizations running Axiomatic Bento4 5e7bb34 are urged to address this vulnerability immediately to mitigate the risks associated with it.

We recommend the following actions to mitigate the risks associated with CVE-2022-3784

1. Update the Axiomatic Bento4 software package to the latest version, as this may include patches that address this vulnerability.
2. Monitor for any suspicious activity or code execution attempts that could indicate an attempt to exploit CVE-2022-3784.
3. Implement strict input validation checks to minimize the potential for exploitation via data manipulation.

In conclusion, CVE-2022-3784 is a critical vulnerability that affects the Axiomatic Bento4 5e7bb34 software package. The exploit details have been disclosed, making it essential for organizations and users alike to act swiftly to mitigate the potential impact. Stay vigilant and update your systems in a timely manner to keep your environment secure.

Timeline

Published on: 10/31/2022 21:15:00 UTC
Last modified on: 11/03/2022 16:42:00 UTC