CVE-2020-8320 : What You Need to Know
Learn about CVE-2020-8320, a BIOS vulnerability in Lenovo ThinkPad models allowing privilege escalation. Find mitigation steps and firmware update instructions.
An internal shell included in BIOS image in some Lenovo ThinkPad models could allow escalation of privilege.
Understanding CVE-2020-8320
What is CVE-2020-8320?
CVE-2020-8320 is a vulnerability found in the BIOS of certain Lenovo ThinkPad models that could be exploited to escalate privileges.
The Impact of CVE-2020-8320
The vulnerability has a CVSS base score of 6.4, indicating a medium severity issue with high impacts on confidentiality, integrity, and availability.
Technical Details of CVE-2020-8320
Vulnerability Description
The presence of an internal shell in the BIOS image of specific Lenovo ThinkPad models allows for potential privilege escalation.
Affected Systems and Versions
- Product: BIOS
- Vendor: Lenovo
- Versions: Various
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Physical
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Immediate Steps to Take
- Update system firmware to the version specified for your model in the Product Impact section of LEN-30042.
Long-Term Security Practices
- Regularly check for firmware updates from Lenovo.
- Implement strong physical security measures to prevent unauthorized access to devices.
Patching and Updates
- Stay informed about security advisories from Lenovo and apply patches promptly.