CVE-2022-4433 : Security Advisory and Response
Learn about CVE-2022-4433 impacting Lenovo ThinkPad X13s laptops. A buffer over-read vulnerability allows local attackers to disclose sensitive info. Find mitigation steps here.
A buffer over-read vulnerability was reported in the ThinkPadX13s BIOS LenovoSetupConfigDxe driver that could allow a local attacker with elevated privileges to cause information disclosure.
Understanding CVE-2022-4433
This CVE-2022-4433 impacts the ThinkPad X13s laptops manufactured by Lenovo. The vulnerability involves a buffer over-read in the BIOS driver that could be exploited by a local attacker with elevated privileges.
What is CVE-2022-4433?
The CVE-2022-4433 is a medium-severity vulnerability reported in the ThinkPadX13s BIOS LenovoSetupConfigDxe driver. The flaw could be leveraged by a local attacker to disclose sensitive information by triggering a buffer over-read.
The Impact of CVE-2022-4433
The impact of this vulnerability is rated as medium severity with high impacts on confidentiality, integrity, and availability of affected Lenovo ThinkPad X13s laptops. An attacker with elevated privileges could exploit this flaw to access sensitive information.
Technical Details of CVE-2022-4433
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is a buffer over-read issue in the ThinkPadX13s BIOS LenovoSetupConfigDxe driver that could allow a local attacker to cause information disclosure.
Affected Systems and Versions
The affected product is the ThinkPad X13s by Lenovo, specifically versions prior to 1.47.
Exploitation Mechanism
The vulnerability can be exploited by a local attacker with elevated privileges to trigger a buffer over-read and disclose sensitive information.
Mitigation and Prevention
Protecting your system from CVE-2022-4433 is crucial to prevent potential exploitation.
Immediate Steps to Take
- Lenovo users are advised to update their ThinkPad X13s laptops to version 1.47 or higher to mitigate this vulnerability.
- Ensure that access to elevated privileges is restricted to trusted users only.
Long-Term Security Practices
- Regularly monitor Lenovo's security updates and patches for any new vulnerabilities.
- Implement strict access control measures to limit privileges and access levels.
Patching and Updates
Stay informed about security advisories from Lenovo and promptly apply patches and updates to ensure the security of your system.