CVE-2022-45163 : Security Advisory and Response

An information-disclosure vulnerability exists on select NXP devices when configured in Serial Download Protocol (SDP) mode. The vulnerability affects various NXP device models and could potentially leak memory contents to physically proximate attackers in certain attack scenarios.

Understanding CVE-2022-45163

This section provides detailed information about the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2022-45163?

The CVE-2022-45163 is an information-disclosure vulnerability that impacts a range of NXP devices operating in Serial Download Protocol (SDP) mode. Attackers in physical proximity can exploit this vulnerability to access memory contents under specific conditions.

The Impact of CVE-2022-45163

The vulnerability poses a high risk to affected devices as attackers could potentially extract sensitive information through memory leaks in cold and warm boot attacks. Confidentiality is significantly compromised in such scenarios.

Technical Details of CVE-2022-45163

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

Vulnerability Description

The vulnerability allows memory contents to be accessed by physically proximate attackers via the SDP port during cold and warm boot attacks on select NXP devices.

Affected Systems and Versions

The affected systems include i.MX RT 1010, i.MX RT 1015, i.MX RT 1020, i.MX RT 1050, i.MX RT 1060, i.MX 6 Family, i.MX 7Dual/Solo, i.MX 7ULP, i.MX 8M Quad, i.MX 8M Mini, and Vybrid. The specific versions and configurations are vulnerable.

Exploitation Mechanism

Attackers need physical proximity to the target device and an understanding of SDP mode operation to exploit the vulnerability. Memory leakage occurs via the SDP port in specific attack scenarios.

Mitigation and Prevention

This section outlines immediate steps to take and long-term security practices to prevent exploitation of the CVE-2022-45163 vulnerability.

Immediate Steps to Take

Customers are advised to disable the SDP mode by programming a one-time programmable eFUSE. This prevents potential memory leaks and unauthorized access to sensitive information.

Long-Term Security Practices

Implement strict device access controls, regularly update firmware, and follow security best practices to enhance the overall security posture and minimize the risk of similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories from NXP and apply recommended patches promptly to address known vulnerabilities and enhance device security.