CVE-2020-5387 : Vulnerability Insights and Analysis

Dell XPS 13 9370 BIOS versions prior to 1.13.1 contain an Improper Exception Handling vulnerability that could be exploited by a local attacker with physical access.

Understanding CVE-2020-5387

This CVE involves a vulnerability in Dell's CPG BIOS affecting versions below 1.13.1.

What is CVE-2020-5387?

The vulnerability allows a local attacker to disrupt system booting by exploiting improper exception handling in the BIOS.

The Impact of CVE-2020-5387

The impact is rated as Low severity with a CVSS base score of 2.3. The attacker needs high privileges and physical access to exploit the vulnerability.

Technical Details of CVE-2020-5387

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability lies in the improper exception handling within Dell XPS 13 9370 BIOS versions prior to 1.13.1.

Affected Systems and Versions

Product: CPG BIOS
Vendor: Dell
Versions Affected: Below 1.13.1 (unspecified version type)

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: High
Availability Impact: Low
Scope: Unchanged
User Interaction: None
Confidentiality Impact: None
Integrity Impact: None

Mitigation and Prevention

To address CVE-2020-5387, consider the following steps:

Immediate Steps to Take

Update the BIOS to version 1.13.1 or higher.
Restrict physical access to systems to prevent unauthorized exploitation.

Long-Term Security Practices

Regularly monitor and apply security updates to all system components.
Implement strong access controls and authentication mechanisms.

Patching and Updates

Dell has released BIOS version 1.13.1 to address this vulnerability. Ensure timely installation of this update.