CVE-2021-39243 : Security Advisory and Response

Cross-Site Request Forgery (CSRF) vulnerability exists in Altus Nexto, Nexto Xpress, and Hadron Xtorm devices through any CGI endpoint.

Understanding CVE-2021-39243

This CVE highlights a CSRF flaw present in multiple devices that could lead to security risks if exploited.

What is CVE-2021-39243?

CSRF vulnerability on Altus Nexto, Nexto Xpress, and Hadron Xtorm devices through CGI endpoints.

The Impact of CVE-2021-39243

Allows attackers to perform unauthorized actions on behalf of authenticated users.
Can lead to data theft, tampering with settings, or malicious actions.

Technical Details of CVE-2021-39243

This section discusses the technical aspects and implications of the vulnerability.

Vulnerability Description

CSRF flaw on various Altus and Xpress devices affecting specific versions.

Affected Systems and Versions

Nexto NX3003, NX3004, NX3005, NX3010, NX3020, NX3030, NX5100, NX5101, NX5110, NX5210
Nexto Xpress XP300, XP315, XP325, XP340
Hadron Xtorm HX3040
Versions range from 1.1.2.8 to 1.8.11.0

Exploitation Mechanism

Attackers can craft malicious requests to trick authenticated users into executing unintended actions.

Mitigation and Prevention

Learn how to mitigate and prevent CSRF vulnerabilities.

Immediate Steps to Take

Implement CSRF tokens to validate requests.
Regularly monitor and audit CGI endpoints for suspicious activities.

Long-Term Security Practices

Provide security awareness training to users about CSRF risks.
Employ secure coding practices to prevent CSRF attacks.

Patching and Updates

Apply security patches provided by the device vendors to address the CSRF vulnerability.