CVE-2018-0390 : What You Need to Know

A vulnerability in the web framework of Cisco Webex has been identified, potentially allowing an attacker to execute a cross-site scripting (XSS) attack. This exploit could be carried out remotely without authentication, targeting users of the web interface on vulnerable systems.

Understanding CVE-2018-0390

This CVE involves a security vulnerability in Cisco Webex that could lead to a cross-site scripting attack.

What is CVE-2018-0390?

The vulnerability in Cisco Webex allows an unauthorized attacker to perform a cross-site scripting (XSS) attack using a technique called Document Object Model-based (DOM-based) XSS. This attack can be executed remotely without authentication, affecting users of the web interface on vulnerable systems.

The Impact of CVE-2018-0390

The exploit enables attackers to inject malicious scripts into the user interface component, allowing them to execute arbitrary HTML or script code within the user's browser, operating within the context of the affected site.

Technical Details of CVE-2018-0390

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability arises from inadequate validation of specific parameters transmitted to the affected software via the HTTP POST method.

Affected Systems and Versions

Product: Cisco Webex unknown
Version: Cisco Webex unknown

Exploitation Mechanism

The attacker can submit malicious scripts to the affected user interface element, enabling the execution of arbitrary script or HTML code in the user's browser within the context of the affected site.

Mitigation and Prevention

Protecting systems from CVE-2018-0390 requires immediate action and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Cisco promptly.
Educate users about the risks of clicking on suspicious links or downloading files from unknown sources.
Monitor network traffic for any signs of malicious activity.

Long-Term Security Practices

Regularly update and patch all software and applications to address known vulnerabilities.
Implement web application firewalls to detect and block XSS attacks.
Conduct regular security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Ensure that all systems running Cisco Webex are updated with the latest security patches to mitigate the risk of exploitation.