CVE-2019-6172 : Vulnerability Insights and Analysis
Learn about CVE-2019-6172, a vulnerability in Lenovo ThinkPad models allowing arbitrary code execution. Find mitigation steps and update recommendations here.
A vulnerability in the SMI callback function of Legacy USB driver in certain Lenovo ThinkPad models could allow for arbitrary code execution.
Understanding CVE-2019-6172
This CVE involves a weakness in the Legacy USB driver of specific Lenovo ThinkPad models, potentially enabling the execution of arbitrary code due to inadequate parameter verification.
What is CVE-2019-6172?
The vulnerability arises from insufficient checking of passed parameters in the SMI callback function of the Legacy USB driver in select Lenovo ThinkPad models, creating a potential avenue for executing arbitrary code.
The Impact of CVE-2019-6172
The vulnerability has a CVSS base score of 6.4, indicating a medium severity issue with high impacts on confidentiality, integrity, and availability. It requires high privileges and has a local attack vector.
Technical Details of CVE-2019-6172
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability allows attackers to potentially execute arbitrary code by exploiting the inadequate parameter verification in the SMI callback function of the Legacy USB driver in certain Lenovo ThinkPad models.
Affected Systems and Versions
- Affected Product: ThinkPad
- Vendor: Lenovo
- Versions: Various
Exploitation Mechanism
The vulnerability can be exploited by passing malicious parameters to the SMI callback function in the Legacy USB driver of the impacted Lenovo ThinkPad models.
Mitigation and Prevention
Protecting systems from CVE-2019-6172 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the BIOS of affected Lenovo ThinkPad models to the latest version as advised in Lenovo's security advisory.
Long-Term Security Practices
- Regularly monitor and apply security updates provided by Lenovo.
- Implement strong access controls and least privilege principles to limit potential attack surfaces.
Patching and Updates
Stay informed about security advisories and patches released by Lenovo to address vulnerabilities like CVE-2019-6172.