CVE-2023-21669 : Exploit Details and Defense Strategies

This CVE-2023-21669 involves an information disclosure vulnerability in WLAN HOST when sending a DPP action frame to a peer with an invalid source address.

Understanding CVE-2023-21669

This section will delve into the details of the CVE-2023-21669 vulnerability, its impact, technical description, affected systems, exploitation mechanism, and mitigation strategies.

What is CVE-2023-21669?

The CVE-2023-21669 vulnerability relates to information disclosure in WLAN HOST, specifically occurring when sending a DPP action frame to a peer with an invalid source address.

The Impact of CVE-2023-21669

The vulnerability's impact is significant, with a base severity rating of HIGH according to the CVSS v3.1 system. It primarily affects confidentiality, with a base score of 8.2 out of 10. This signifies the potential for unauthorized disclosure of sensitive information.

Technical Details of CVE-2023-21669

In this section, we will explore the technical aspects of CVE-2023-21669, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability involves a buffer over-read in WLAN HOST, specifically triggered when sending a DPP action frame with an invalid source address, leading to potential information disclosure.

Affected Systems and Versions

The vulnerability impacts various products under the Snapdragon series by Qualcomm, Inc., including versions like FastConnect 6200, Snapdragon 855, Snapdragon 865 5G, and others listed in the CVE details.

Exploitation Mechanism

The exploitation of CVE-2023-21669 occurs when an attacker sends a DPP action frame with a manipulated source address to a vulnerable WLAN HOST, enabling unauthorized access to confidential data.

Mitigation and Prevention

To protect systems from CVE-2023-21669 and safeguard against potential exploitation, immediate steps should be taken, complemented by long-term security practices and regular patching and updates.

Immediate Steps to Take

System administrators are advised to apply security patches provided by Qualcomm promptly.
Network configurations should be reviewed to restrict unauthorized access to WLAN HOST interfaces.

Long-Term Security Practices

Regular security audits and vulnerability assessments should be conducted to identify and address potential weaknesses.
Employee training on cybersecurity best practices can help prevent social engineering attacks that exploit such vulnerabilities.

Patching and Updates

Stay informed about security bulletins and updates released by Qualcomm to address CVE-2023-21669.
Implement a robust patch management process to ensure timely application of security patches across affected systems and devices.