CVE-2021-45906 Explained : Impact and Mitigation

OpenWrt 21.02.1 is susceptible to XSS exploitation via the NAT Rules Name screen.

Understanding CVE-2021-45906

This CVE involves a cross-site scripting vulnerability in OpenWrt 21.02.1 that can be exploited through the NAT Rules Name screen.

What is CVE-2021-45906?

CVE-2021-45906 refers to an XSS vulnerability in OpenWrt 21.02.1 that allows attackers to execute malicious scripts by injecting them into the NAT Rules Name configuration.

The Impact of CVE-2021-45906

This vulnerability can lead to unauthorized access, data theft, and the execution of arbitrary code on affected devices running OpenWrt 21.02.1.

Technical Details of CVE-2021-45906

The technical aspects of CVE-2021-45906 provide insight into the nature of the vulnerability.

Vulnerability Description

The XSS vulnerability in OpenWrt 21.02.1 enables attackers to inject and execute malicious scripts via the NAT Rules Name screen.

Affected Systems and Versions

Affected Version: OpenWrt 21.02.1

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the NAT Rules Name configuration, potentially leading to XSS attacks.

Mitigation and Prevention

Protecting systems from CVE-2021-45906 requires immediate action and long-term security practices.

Immediate Steps to Take

Update OpenWrt to the latest version with security patches.
Restrict access to the NAT Rules configuration interface.
Implement input validation to block malicious script injections.

Long-Term Security Practices

Regularly monitor and audit network configurations for security gaps.
Train personnel on identifying and mitigating XSS and other web-based vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates for OpenWrt to mitigate the risk of XSS attacks.