CVE-2019-12588 : Security Advisory and Response

Espressif ESP8266_NONOS_SDK versions 2.2.0 through 3.1.0 contain a vulnerability in the client 802.11 mac implementation, allowing for a denial of service attack.

Understanding CVE-2019-12588

This CVE details a flaw in the validation of the RSN AuthKey suite list count in specific frames, enabling attackers to crash the system.

What is CVE-2019-12588?

The vulnerability in the Espressif ESP8266_NONOS_SDK versions 2.2.0 through 3.1.0 allows malicious actors within radio range to exploit the incorrect validation of the RSN AuthKey suite list count, leading to a denial of service through crafted messages.

The Impact of CVE-2019-12588

Exploiting this vulnerability can result in a denial of service attack, causing the system to crash and become unresponsive.

Technical Details of CVE-2019-12588

Espressif ESP8266_NONOS_SDK vulnerability details.

Vulnerability Description

The flaw lies in the incorrect validation of the RSN AuthKey suite list count in beacon frames, probe responses, and association responses.

Affected Systems and Versions

Espressif ESP8266_NONOS_SDK versions 2.2.0 through 3.1.0

Exploitation Mechanism

Attackers within radio range can send specially crafted messages to trigger a denial of service, resulting in a system crash.

Mitigation and Prevention

Protecting systems from CVE-2019-12588.

Immediate Steps to Take

Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activity.
Apply vendor-supplied patches or updates promptly.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.

Patching and Updates

Espressif may release patches or updates to address this vulnerability. Stay informed and apply patches as soon as they are available.