CVE-2021-28130 : What You Need to Know

This article provides an overview of CVE-2021-28130, a vulnerability in Dr.Web Firewall 12.5.2.4160 on Windows that incorrectly restricts applications signed by Dr.Web, allowing a DLL for a custom payload to bypass firewall filters.

Understanding CVE-2021-28130

CVE-2021-28130 is a security vulnerability that affects Dr.Web Firewall 12.5.2.4160 on Windows systems. The flaw allows for the bypassing of firewall filters by using a DLL for a custom payload within a legitimate binary.

What is CVE-2021-28130?

The vulnerability in Dr.Web Firewall 12.5.2.4160 on Windows facilitates the bypassing of firewall filters by using a DLL for a custom payload within a legitimate binary signed by Dr.Web.

The Impact of CVE-2021-28130

The impact of CVE-2021-28130 is significant as it can lead to a breach in the security measures provided by the firewall, potentially allowing malicious actors to execute unauthorized actions.

Technical Details of CVE-2021-28130

The technical details of CVE-2021-28130 include a description of the vulnerability, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

Dr.Web Firewall 12.5.2.4160 on Windows incorrectly restricts applications signed by Dr.Web, enabling a DLL for a custom payload within a legitimate binary to bypass firewall filters.

Affected Systems and Versions

The vulnerability affects Dr.Web Firewall version 12.5.2.4160 on Windows systems.

Exploitation Mechanism

By utilizing a DLL for a custom payload within a legitimate binary, attackers can exploit the flaw to circumvent firewall filters.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-28130, immediate actions need to be taken, as well as implementing long-term security practices and keeping systems up to date with patches and updates.

Immediate Steps to Take

Immediate steps to mitigate the vulnerability include monitoring network traffic, restricting access, and implementing firewall rules.

Long-Term Security Practices

Implementing robust security practices such as regular security audits, employee training on cybersecurity, and maintaining up-to-date security solutions can help prevent similar vulnerabilities.

Patching and Updates

Regularly applying patches and updates released by Dr.Web for the firewall software is essential to address the CVE-2021-28130 vulnerability and enhance overall system security.