CVE-2023-33020 : What You Need to Know
Learn about CVE-2023-33020, an improper authorization vulnerability in Qualcomm Snapdragon WLAN Host component, leading to DOS attacks. Mitigation strategies included.
This article provides detailed information about CVE-2023-33020, including its impact, technical details, and mitigation strategies.
Understanding CVE-2023-33020
CVE-2023-33020 is an improper authorization vulnerability found in the WLAN Host component affecting various Qualcomm Snapdragon products.
What is CVE-2023-33020?
The vulnerability arises due to a transient denial-of-service (DOS) condition in the WLAN Host when an invalid channel is received in Station (STA) during Channel Switch Announcement Information Element (CSA IE).
The Impact of CVE-2023-33020
The impact of this vulnerability is rated as high, with a CVSS base score of 7.5. It can lead to a denial-of-service attack affecting the availability of the WLAN Host.
Technical Details of CVE-2023-33020
The vulnerability affects multiple versions of the Snapdragon platform, including the 9206 LTE Modem, APQ8017, APQ8052, and various others.
Vulnerability Description
The vulnerability allows unauthorized actors to trigger a transient DOS state by exploiting an invalid channel reception scenario.
Affected Systems and Versions
Qualcomm Snapdragon products running affected versions are vulnerable to this issue, impacting a wide range of platforms and hardware.
Exploitation Mechanism
The improper authorization within the WLAN Host can be exploited by sending an invalid channel, causing the device to enter a DOS state.
Mitigation and Prevention
To mitigate the risk associated with CVE-2023-33020, immediate steps should be taken along with implementing long-term security practices.
Immediate Steps to Take
Monitor system logs for any suspicious activities, restrict network access, and apply vendor-supplied patches promptly.
Long-Term Security Practices
Regularly update system software, conduct security audits, and train personnel on identifying and responding to security threats.
Patching and Updates
Stay informed about security bulletins from Qualcomm and apply relevant updates to address known vulnerabilities.