CVE-2018-19922 : Vulnerability Insights and Analysis

The Actiontec C1000A router with firmware up to CAC004-31.30L.95 is vulnerable to Persistent Cross-Site Scripting (XSS) allowing remote attackers to inject arbitrary HTML into the Website Blocking page.

Understanding CVE-2018-19922

This CVE describes a Persistent Cross-Site Scripting (XSS) vulnerability in the Actiontec C1000A router.

What is CVE-2018-19922?

The vulnerability enables remote attackers to insert arbitrary HTML into the Website Blocking page by manipulating the 'TodUrlAdd' URL parameter in a specific POST request.

The Impact of CVE-2018-19922

Remote attackers can inject malicious HTML code into the Website Blocking page
This could lead to unauthorized access, data theft, or further attacks on users accessing the affected page

Technical Details of CVE-2018-19922

The technical aspects of the CVE-2018-19922 vulnerability are as follows:

Vulnerability Description

Type: Persistent Cross-Site Scripting (XSS)
Location: advancedsetup_websiteblocking.html Website Blocking page
Attack Vector: Remote

Affected Systems and Versions

Product: Actiontec C1000A router
Firmware: up to CAC004-31.30L.95

Exploitation Mechanism

Attackers manipulate the 'TodUrlAdd' URL parameter in a /urlfilter.cmd POST request

Mitigation and Prevention

To address CVE-2018-19922, consider the following steps:

Immediate Steps to Take

Disable remote access to the router's configuration page
Regularly monitor network traffic for suspicious activities
Implement strong password policies for router access

Long-Term Security Practices

Keep router firmware up to date
Conduct regular security audits on network devices
Educate users on safe browsing practices

Patching and Updates

Check for firmware updates from the router manufacturer
Apply patches promptly to mitigate the XSS vulnerability