CVE-2021-40425 : What You Need to Know

This CVE-2021-40425 article provides an in-depth look at the out-of-bounds read vulnerability in Webroot Secure Anywhere version 21.4.

Understanding CVE-2021-40425

CVE-2021-40425 is a high-severity vulnerability in Webroot Secure Anywhere version 21.4 that can lead to denial of service.

What is CVE-2021-40425?

The vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere version 21.4
A specially crafted executable can trigger this vulnerability
Attackers can exploit this issue by issuing specific invalid data requests

The Impact of CVE-2021-40425

CVSS Base Score: 7.1 (High)
Attack Vector: Local
Attack Complexity: Low
Availability Impact: High
This vulnerability can result in a denial of service attack

Technical Details of CVE-2021-40425

This section delves into the specific technical aspects of the CVE-2021-40425 vulnerability.

Vulnerability Description

Out-of-bounds read vulnerability in IOCTL GetProcessCommand and B_03
Executing a specially-crafted executable can lead to the exploitation of this vulnerability

Affected Systems and Versions

Affected Product: Webroot Secure Anywhere
Affected Version: 21.4

Exploitation Mechanism

Attackers issue an IOCTL to trigger the vulnerability
Specific invalid data requests cause issues in the device driver WRCore_x64

Mitigation and Prevention

Learn how to protect your systems from CVE-2021-40425.

Immediate Steps to Take

Update Webroot Secure Anywhere to a patched version
Monitor for any unusual system behavior
Implement least privilege access

Long-Term Security Practices

Conduct regular security audits and assessments
Educate users about phishing and social engineering attacks

Patching and Updates

Stay informed about security updates for Webroot Secure Anywhere
Apply patches promptly to mitigate the vulnerability