CVE-2020-13601 Explained : Impact and Mitigation

CVE-2020-13601, titled 'Possible read out of bounds in dns read,' affects Zephyr versions 1.14.2 and 2.3.0. The vulnerability involves Out-of-bounds Read (CWE-125) in the DNS read process.

Understanding CVE-2020-13601

This CVE was made public on November 18, 2020, with a critical base severity score of 9.

What is CVE-2020-13601?

The vulnerability in Zephyr versions >= 1.14.2 and >= 2.3.0 allows for a potential read out of bounds in the DNS read process, posing a significant security risk.

The Impact of CVE-2020-13601

The CVSS v3.1 base score of 9 indicates a critical impact on confidentiality, integrity, and availability, with a high attack complexity and vector through the network.

Technical Details of CVE-2020-13601

The technical details of this CVE provide insight into the vulnerability and its implications.

Vulnerability Description

The vulnerability involves a possible read out of bounds in the DNS read process, leading to an Out-of-bounds Read (CWE-125) issue.

Affected Systems and Versions

Zephyr versions >= 1.14.2
Zephyr versions >= 2.3.0

Exploitation Mechanism

The vulnerability can be exploited remotely through a network connection, with high attack complexity and impact on confidentiality, integrity, and availability.

Mitigation and Prevention

Protecting systems from CVE-2020-13601 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Zephyr to a patched version that addresses the vulnerability.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Ensure that all systems running affected Zephyr versions are promptly patched with the latest updates to mitigate the risk of exploitation.