CVE-2021-20791 Explained : Impact and Mitigation

This article provides an overview of CVE-2021-20791, detailing the vulnerability, its impact, technical aspects, and mitigation strategies.

Understanding CVE-2021-20791

CVE-2021-20791 is an improper access control vulnerability identified in RevoWorks Browser version 2.1.230 and earlier, allowing attackers to bypass access restrictions and exchange unauthorized files.

What is CVE-2021-20791?

The vulnerability in RevoWorks Browser version 2.1.230 and earlier permits attackers to circumvent access restrictions and transfer unauthorized files between local and isolated environments of the web browser through unspecified vectors.

The Impact of CVE-2021-20791

This vulnerability poses a significant security risk as it enables threat actors to perform file exchanges between different environments, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2021-20791

The following technical aspects of CVE-2021-20791 shed light on the vulnerability's nature:

Vulnerability Description

CVE-2021-20791 involves an improper access control issue in RevoWorks Browser, specifically in versions 2.1.230 and earlier. This flaw allows malicious actors to bypass access restrictions and manipulate file transfers.

Affected Systems and Versions

The vulnerability affects RevoWorks Browser versions 2.1.230 and earlier, indicating that systems running these versions are susceptible to exploitation.

Exploitation Mechanism

By leveraging unspecified vectors, threat actors can exploit CVE-2021-20791 to bypass access control and facilitate the unauthorized exchange of files between different environments.

Mitigation and Prevention

Addressing CVE-2021-20791 requires immediate action and long-term security practices to safeguard systems from potential exploitation.

Immediate Steps to Take

To mitigate the risk associated with CVE-2021-20791, users are advised to update RevoWorks Browser to a secure version and monitor file exchanges to detect suspicious activities.

Long-Term Security Practices

Implementing robust access control measures, conducting regular security assessments, and educating users on safe browsing practices can enhance the overall security posture against similar vulnerabilities.

Patching and Updates

Vendor-provided patches and security updates should be promptly applied to address CVE-2021-20791 and bolster system defenses against unauthorized file exchanges and access control bypasses.