CVE-2018-19630 : What You Need to Know

OpenWrt and LEDE are affected by an unauthenticated reflected cross-site scripting (XSS) vulnerability in the uhttpd software.

Understanding CVE-2018-19630

This CVE identifies a security flaw in the cgi_handle_request function of uhttpd, impacting OpenWrt up to version 18.06.1 and LEDE up to version 17.01.

What is CVE-2018-19630?

The vulnerability allows unauthenticated attackers to execute XSS attacks by manipulating URIs.

The Impact of CVE-2018-19630

Exploiting this vulnerability enables attackers to inject malicious scripts into web pages viewed by other users, potentially leading to various attacks.

Technical Details of CVE-2018-19630

The technical aspects of this CVE are as follows:

Vulnerability Description

The cgi_handle_request function in uhttpd is susceptible to unauthenticated reflected XSS attacks.

Affected Systems and Versions

OpenWrt versions up to 18.06.1 and LEDE versions up to 17.01 are affected.

Exploitation Mechanism

Crafting a specially-crafted URI, such as cgi-bin/?[XSS], can exploit this vulnerability.

Mitigation and Prevention

Protect your systems from CVE-2018-19630 with the following measures:

Immediate Steps to Take

Apply security patches provided by OpenWrt or LEDE promptly.
Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.

Long-Term Security Practices

Regularly update and patch your systems to address known vulnerabilities.
Educate users and administrators about safe browsing practices to mitigate the risk of XSS attacks.
Monitor web traffic for suspicious activities that may indicate XSS attempts.
Consider implementing Content Security Policy (CSP) to reduce the impact of XSS attacks.

Patching and Updates

Stay informed about security updates released by OpenWrt and LEDE to address CVE-2018-19630.