CVE-2023-28386 Explained : Impact and Mitigation
Snap One OvrC Pro devices (v7.2 and prior) are vulnerable to unauthorized firmware uploads, leading to potential code execution. Learn about CVE-2023-28386 and how to mitigate the risk.
This CVE details a vulnerability in Snap One OvrC Pro devices, specifically affecting versions 7.2 and prior. The vulnerability allows attackers to upload arbitrary firmware updates, leading to potential code execution.
Understanding CVE-2023-28386
Snap One OvrC Pro devices running versions 7.2 and earlier lack proper validation of firmware updates, creating a security loophole that could be exploited by malicious actors.
What is CVE-2023-28386?
The vulnerability in Snap One OvrC Pro devices occurs due to the device's inadequate validation process for firmware updates. Instead of utilizing a private-public key mechanism, the device only calculates the MD5 hash of the firmware, enabling attackers to upload unauthorized firmware updates.
The Impact of CVE-2023-28386
This vulnerability poses a high severity risk with a Base CVSS Score of 8.6. It could allow threat actors to execute arbitrary code on compromised devices, compromising the integrity of the system.
Technical Details of CVE-2023-28386
The vulnerability is categorized under CWE-345 - Insufficient Verification of Data Authenticity, highlighting the inadequate verification process within the affected devices.
Vulnerability Description
Snap One OvrC Pro devices fail to validate firmware updates correctly, relying solely on the MD5 hash instead of a more robust private-public key mechanism.
Affected Systems and Versions
Only Snap One OvrC Pro devices running versions 7.2 and prior are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading unauthorized firmware updates, taking advantage of the lack of a complete PKI system firmware signature.
Mitigation and Prevention
Snap One has provided solutions to mitigate the risk posed by CVE-2023-28386.
Immediate Steps to Take
- Automatically push out OvrC Pro v7.2 and v7.3 updates to devices via OvrC cloud.
- Disable UPnP on affected devices.
Long-Term Security Practices
Regularly update firmware on devices, implement secure coding practices, and conduct security assessments to identify and address potential vulnerabilities.
Patching and Updates
For detailed information on the updates and fixes released by Snap One for the affected products, refer to Snap One's Release Notes.