CVE-2020-5357 : Vulnerability Insights and Analysis

Dell Dock Firmware Update Utilities for Dell Client Consumer and Commercial docking stations have an Arbitrary File Overwrite vulnerability.

Understanding CVE-2020-5357

Dell Dock Firmware Update Utilities for Dell Client Consumer and Commercial docking stations contain a security vulnerability that allows for arbitrary file overwriting.

What is CVE-2020-5357?

The vulnerability in Dell Dock Firmware Update Utilities allows a locally authenticated low-privileged malicious user to overwrite arbitrary files via a symlink attack during a specific time window while being executed by an administrator.

The Impact of CVE-2020-5357

The vulnerability has a CVSS base score of 7.1, indicating a high severity level. It poses a high integrity impact and availability impact, with low privileges required for exploitation.

Technical Details of CVE-2020-5357

Dell Dock Firmware Update Utilities vulnerability details.

Vulnerability Description

The vulnerability allows a malicious user to trick an administrator into overwriting arbitrary files during the utility's execution time window.

Affected Systems and Versions

Product: CPG BIOS
Vendor: Dell
Versions Affected: Less than 1.0.8 (unspecified/custom)

Exploitation Mechanism

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

Mitigation and Prevention

Steps to address and prevent the CVE-2020-5357 vulnerability.

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Monitor for any unauthorized file modifications.
Restrict access to the vulnerable utilities.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Educate users on security best practices to prevent social engineering attacks.

Patching and Updates

Dell has released a firmware update to address the vulnerability.