CVE-2017-7936 Explained : Impact and Mitigation
Learn about CVE-2017-7936, a stack-based buffer overflow vulnerability in NXP processors like i.MX 50, i.MX 53, and more. Find out the impact, affected systems, and mitigation steps.
A vulnerability related to a stack-based buffer overflow has been identified in various NXP processors, including i.MX 50, i.MX 53, i.MX 6ULL, i.MX 6UltraLite, i.MX 6SoloLite, i.MX 6Solo, i.MX 6DualLite, i.MX 6SoloX, i.MX 6Dual, i.MX 6Quad, i.MX 6DualPlus, i.MX 6QuadPlus, Vybrid VF3xx, Vybrid VF5xx, and Vybrid VF6xx. This vulnerability occurs when the device is configured in a security-enabled mode, where SDP (Serial Downloader Protocol) can be used to download a small section of code to an unprotected memory region.
Understanding CVE-2017-7936
A stack-based buffer overflow issue was discovered in NXP i.MX processors, potentially allowing unauthorized code execution.
What is CVE-2017-7936?
The vulnerability in NXP processors allows attackers to exploit a stack-based buffer overflow when the device is in a security-enabled configuration.
The Impact of CVE-2017-7936
- Attackers can execute unauthorized code on affected devices, compromising their security.
Technical Details of CVE-2017-7936
The technical aspects of the vulnerability in NXP processors.
Vulnerability Description
- The vulnerability is a stack-based buffer overflow issue in various NXP processors.
Affected Systems and Versions
- NXP i.MX 50, i.MX 53, i.MX 6ULL, i.MX 6UltraLite, i.MX 6SoloLite, i.MX 6Solo, i.MX 6DualLite, i.MX 6SoloX, i.MX 6Dual, i.MX 6Quad, i.MX 6DualPlus, i.MX 6QuadPlus, Vybrid VF3xx, Vybrid VF5xx, and Vybrid VF6xx.
Exploitation Mechanism
- Exploitation occurs when the device is configured in a security-enabled mode, allowing SDP to download code to an unprotected memory region.
Mitigation and Prevention
Steps to mitigate and prevent the vulnerability in NXP processors.
Immediate Steps to Take
- Disable SDP and restrict access to critical systems.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update firmware and security patches for NXP processors.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Apply security patches provided by NXP to address the stack-based buffer overflow vulnerability.