CVE-2022-4173 : Security Advisory and Response
Learn about CVE-2022-4173, a high-severity vulnerability in Avast and AVG Antivirus for Windows allowing privilege escalation. Find impact, technical details, and mitigation steps.
A vulnerability within the malware removal functionality of Avast and AVG Antivirus for Windows allowed an attacker with write access to the filesystem to escalate privileges. Learn about the impact, technical details, and mitigation steps related to CVE-2022-4173.
Understanding CVE-2022-4173
This section delves into the specifics of CVE-2022-4173, focusing on the vulnerability found in Avast and AVG Antivirus for Windows.
What is CVE-2022-4173?
The CVE-2022-4173 vulnerability pertains to a flaw in the malware removal feature of Avast and AVG Antivirus products. It enables an attacker with filesystem write access to elevate privileges in certain scenarios.
The Impact of CVE-2022-4173
The impact of this vulnerability is rated as high, with a CVSSv3.1 base score of 7.3. It falls under CAPEC-233 for Privilege Escalation, indicating the severity of unauthorized privilege elevation.
Technical Details of CVE-2022-4173
Explore the technical aspects of CVE-2022-4173, including vulnerability description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability in Avast and AVG Antivirus for Windows allows an attacker to escalate privileges by leveraging the malware removal functionality, posing a significant security risk.
Affected Systems and Versions
Avast and AVG Antivirus versions up to 22.9 are affected, with the issue resolved in version 22.10. Windows operating systems are vulnerable to this exploit.
Exploitation Mechanism
The exploit requires low attack complexity and privileges, but high availability, confidentiality, and integrity impacts. User interaction is required for successful exploitation.
Mitigation and Prevention
Discover the necessary steps to mitigate and prevent the exploitation of CVE-2022-4173 in your systems.
Immediate Steps to Take
Users should update Avast and AVG Antivirus to version 22.10 to patch the vulnerability. Additionally, monitor for any signs of unauthorized privilege escalation.
Long-Term Security Practices
Implement robust privilege management practices, maintain regular software updates, and conduct security assessments to prevent similar vulnerabilities.
Patching and Updates
Stay vigilant for security advisories and promptly apply patches released by NortonLifeLock to safeguard against potential attacks.