CVE-2023-42135 : What You Need to Know

CVE-2023-42135 is a vulnerability assigned by CERT-PL affecting PAX A920 Pro and A50 devices. The vulnerability allows for local code execution via parameter injection by bypassing input validation during partition flashing, requiring physical USB access by the attacker.

Understanding CVE-2023-42135

This section provides an overview of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-42135?

PAX A920 Pro and A50 devices running on PayDroid_8.1.0_Sagittarius_V11.1.50_20230614 or earlier versions are susceptible to local code execution through parameter injection, exploiting input validation loopholes during partition flashing.

The Impact of CVE-2023-42135

The impact is classified as CAPEC-549 - Local Execution of Code. The vulnerability poses high availability, confidentiality, and integrity impacts, with a CVSS base score of 6.8 (Medium severity).

Technical Details of CVE-2023-42135

This section delves into the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability allows local code execution via parameter injection during partition flashing on PAX A920 Pro and A50 devices with specific software versions, necessitating physical USB access for exploitation.

Affected Systems and Versions

PAX A920 Pro and A50 devices with PayDroid_8.1.0_Sagittarius_V11.1.50_20230614 or earlier versions are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting parameters during partition flashing and bypassing input validation, gaining the ability to execute malicious code locally.

Mitigation and Prevention

This section outlines immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

To mitigate the risk, ensure physical security of the devices, restrict USB access, and monitor for any suspicious activities around the affected devices.

Long-Term Security Practices

Implement strict security protocols, conduct regular security audits, and provide training to personnel on device security best practices.

Patching and Updates

Regularly update the firmware and software of PAX A920 Pro and A50 devices to patch the vulnerability and enhance overall security posture.