CVE-2019-18992 : Vulnerability Insights and Analysis

OpenWrt 18.06.4 has a vulnerability that enables cross-site scripting attacks through specific Name fields, affecting devices like the TP-Link Archer C7.

Understanding CVE-2019-18992

This CVE identifies a cross-site scripting vulnerability in OpenWrt 18.06.4 that can be exploited through certain Name fields.

What is CVE-2019-18992?

OpenWrt 18.06.4 is susceptible to cross-site scripting (XSS) attacks via the "Open ports on router," "New forward rule," and "New Source NAT" fields accessed through the cgi-bin/luci/admin/network/firewall/rules URI.

The Impact of CVE-2019-18992

The vulnerability allows attackers to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-18992

This section delves into the technical aspects of the CVE.

Vulnerability Description

The XSS vulnerability in OpenWrt 18.06.4 permits attackers to inject and execute malicious scripts through specific Name fields.

Affected Systems and Versions

OpenWrt 18.06.4
Devices like the TP-Link Archer C7

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting malicious scripts into the affected Name fields via the cgi-bin/luci/admin/network/firewall/rules URI.

Mitigation and Prevention

Protecting systems from CVE-2019-18992 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable access to the vulnerable fields if not essential
Regularly monitor network traffic for suspicious activities
Implement content security policies to mitigate XSS risks

Long-Term Security Practices

Keep systems and firmware updated with the latest security patches
Conduct regular security audits and penetration testing

Patching and Updates

Apply patches provided by OpenWrt to address the XSS vulnerability
Stay informed about security advisories and updates from OpenWrt