CVE-2021-4198 : Security Advisory and Response
Learn about CVE-2021-4198, a NULL Pointer Dereference flaw in Bitdefender messaging_ipc.dll impacting Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools, and VPN Standalone. Take immediate steps for mitigation and prevention.
A NULL Pointer Dereference vulnerability in the messaging_ipc.dll component as used in multiple Bitdefender products allows attackers to crash product processes. It affects Bitdefender Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools, and VPN Standalone.
Understanding CVE-2021-20657
This CVE identifies a vulnerability in messaging_ipc.dll present in various Bitdefender products, enabling attackers to crash product processes.
What is CVE-2021-20657?
CVE-2021-20657 is a NULL Pointer Dereference vulnerability in messaging_ipc.dll in Bitdefender Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools, and VPN Standalone. This flaw can be exploited by attackers to crash product processes.
The Impact of CVE-2021-20657
The impact of this vulnerability is classified as MEDIUM with a CVSS base score of 6.1. It has a low attack complexity, requires low privileges, and has a high availability impact.
Technical Details of CVE-2021-20657
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability lies in the messaging_ipc.dll component utilized in Bitdefender products, leading to a NULL Pointer Dereference. Attackers can exploit this to crash product processes.
Affected Systems and Versions
The affected products include Bitdefender Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools, and VPN Standalone. Versions prior to specific numbers are vulnerable.
Exploitation Mechanism
Attackers can exploit this vulnerability to crash product processes and generate crashdump files in affected Bitdefender products.
Mitigation and Prevention
Protecting your systems from CVE-2021-20657 is crucial to maintaining cybersecurity.
Immediate Steps to Take
Ensure you update to the latest versions of Bitdefender products:
- Bitdefender Total Security version 26.0.3.29
- Bitdefender Internet Security version 26.0.3.29
- Bitdefender Antivirus Plus version 26.0.3.29
- Bitdefender VPN Standalone version 25.5.0.48
- Bitdefender Endpoint Security Tools version 7.2.2.92
Long-Term Security Practices
Implement regular software updates, security patches, and proactive monitoring to prevent future vulnerabilities.
Patching and Updates
Stay informed about security advisories and apply patches promptly to safeguard your systems against known vulnerabilities.