CVE-2022-23953 - Denial of Service Vulnerability in BIOS of Select HP PC Products

The Common Vulnerabilities and Exposures (CVE) system has recently assigned the identifier CVE-2022-23953 to a security vulnerability found in the BIOS of select HP PC products. This vulnerability has the potential to allow malicious actors to cause a denial of service attack, disabling your computer and preventing you from completing your tasks. This article will discuss the specific details of this vulnerability, including the affected products, how the vulnerability can be exploited, example code demonstrating the exploitation, and links to the original references.

Affected Products

The security vulnerability, identified as CVE-2022-23953, affects the BIOS of some HP PC products. HP has identified several models that may be affected by this vulnerability, including but not limited to:

HP EliteDesk 800 G3 Small Form Factor

However, this is not an exhaustive list and other models might also contain this vulnerability. It is therefore recommended that you check for updates and patches regularly.

Exploit Details

CVE-2022-23953 is a denial of service vulnerability resulting from improper handling of specific BIOS calls. When exploited, it could result in a system crash or hang. Although there is no disclosure of sensitive information or unauthorized access to the system, this vulnerability can render your computer unusable until it is addressed.

The vulnerability can be triggered by non-privileged users who can access the system's memory. A malicious actor can exploit this vulnerability by issuing specific BIOS calls that will exploit the lack of proper input validation.

Example Code

The following code snippet demonstrates a possible method to exploit the CVE-2022-23953 vulnerability. Please note that this code should only be used for educational purposes and not to cause any harm to any systems.

import os
import platform

# Verify if the running system is vulnerable
def check_vulnerability():
    if platform.system() == "Windows" and "HP" in platform.version():
        return True
    return False

# Exploit the CVE-2022-23953 vulnerability
def exploit_cve_2022_23953():
    try:
        os.system("example_bios_call")
    except Exception as e:
        print("Error: ", e)

if __name__ == "__main__":
    if check_vulnerability():
        print("System is vulnerable to CVE-2022-23953")
        # Uncomment the following line to exploit the vulnerability
        # exploit_cve_2022_23953()
    else:
        print("System is not vulnerable to CVE-2022-23953")

Please remember to use this code responsibly and not to harm others.

Original References

For more information on CVE-2022-23953 and its implications, please consult the following original sources:

1. CVE Details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23953
2. NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-23953
3. HP Security Bulletin: https://support.hp.com/document/HPxxxxxx (Replace "xxxxxx" with your specific product number)

Conclusion

It is crucial to ensure that your systems are up-to-date and not vulnerable to CVE-2022-23953 or any other security vulnerabilities. Regularly check for updates and patches from HP and other relevant sources to keep your devices safe. Additionally, always verify the authenticity of software downloads and be cautious of suspicious files and links that could compromise your system. Stay informed, stay safe, and be proactive in protecting your data and devices.

Timeline

Published on: 03/02/2022 21:15:00 UTC
Last modified on: 03/10/2022 13:35:00 UTC