CVE-2023-39435 : What You Need to Know

Understanding CVE-2023-39435

This CVE involves a stack-based buffer overflow vulnerability in Zavio IP Cameras with firmware version M2.1.6.05, potentially leading to remote code execution.

What is CVE-2023-39435?

Zavio IP Cameras, including models CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321, are susceptible to stack-based overflows due to insufficient buffer size validation during network request processing.

The Impact of CVE-2023-39435

The vulnerability can allow attackers to remotely execute arbitrary code on the affected IP Cameras, compromising confidentiality, integrity, and availability.

Technical Details of CVE-2023-39435

Zavio IP Camera Stack-Based Buffer Overflow details:

Vulnerability Description

The vulnerability in the firmware version M2.1.6.05 allows for stack-based overflows when handling network requests, enabling potential remote code execution.

Affected Systems and Versions

Zavio IP Cameras with firmware version M2.1.6.05, including models CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321, are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending certain settings via network requests, triggering the stack-based overflow and potentially executing malicious code remotely.

Mitigation and Prevention

Guidelines to address CVE-2023-39435:

Immediate Steps to Take

As the affected products are end-of-life with no available firmware fixes from the vendor, users are advised to discontinue the use of Zavio IP Cameras immediately.

Long-Term Security Practices

Ensure ongoing monitoring of security advisories and consider proactive upgrades to newer, supported camera models from reputable vendors.

Patching and Updates

Given the lack of firmware updates for affected models, users are encouraged to replace vulnerable cameras with more secure alternatives.