CVE-2021-20021 Explained : Impact and Mitigation
Critical vulnerability (CVE-2021-20021) discovered in SonicWall Email Security version 10.0.9.x allows attackers to create unauthorized administrative accounts. Learn how to mitigate risk and protect your system.
A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.
Understanding CVE-2021-20021
This CVE, assigned to SonicWall, highlights a critical vulnerability in the Email Security product that could be exploited by threat actors.
What is CVE-2021-20021?
The vulnerability in SonicWall Email Security version 10.0.9.x enables an attacker to establish an administrative account through a malicious HTTP request.
The Impact of CVE-2021-20021
This security flaw allows unauthorized individuals to gain administrative privileges, potentially leading to unauthorized access and compromise of sensitive data.
Technical Details of CVE-2021-20021
The following technical aspects outline the vulnerability in further detail.
Vulnerability Description
The flaw arises due to improper privilege management in SonicWall Email Security version 10.0.9.x, permitting the creation of unauthorized administrative accounts.
Affected Systems and Versions
SonicWall Email Security versions 10.0.9 and earlier are impacted by this vulnerability.
Exploitation Mechanism
Threat actors exploit this vulnerability by sending a specially crafted HTTP request to the targeted remote host, enabling the unauthorized creation of administrative accounts.
Mitigation and Prevention
To secure systems and mitigate the risks associated with CVE-2021-20021, the following steps need to be implemented.
Immediate Steps to Take
Immediately apply patches or security updates provided by SonicWall to address the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Regularly monitor and update the SonicWall Email Security software to ensure protection against known security flaws, conducting thorough security assessments and audits regularly.
Patching and Updates
Stay informed about security advisories from SonicWall and promptly install recommended patches to mitigate security risks effectively.