CVE-2020-3136 Explained : Impact and Mitigation

A vulnerability in the web-based management interface of Cisco Jabber Guest could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack.

Understanding CVE-2020-3136

This CVE involves a security flaw in Cisco Jabber Guest that could enable a malicious actor to execute a cross-site scripting attack.

What is CVE-2020-3136?

The vulnerability in Cisco Jabber Guest allows an unauthenticated remote attacker to perform a cross-site scripting attack by exploiting the web-based management interface.

The Impact of CVE-2020-3136

The vulnerability could lead to the execution of arbitrary script code in the context of the affected interface or access to sensitive browser-based information.

Technical Details of CVE-2020-3136

This section provides more technical insights into the CVE.

Vulnerability Description

The flaw arises from the lack of proper validation of user-supplied input in the web-based management interface of Cisco Jabber Guest.

Affected Systems and Versions

Product: Cisco Jabber Guest
Vendor: Cisco
Versions affected: Before 11.1(3)

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Scope: Changed
CVSS Base Score: 6.1 (Medium)

Mitigation and Prevention

Protecting systems from CVE-2020-3136 is crucial to prevent potential exploitation.

Immediate Steps to Take

Apply vendor-provided patches promptly.
Educate users about phishing attacks to prevent exploitation.

Long-Term Security Practices

Regularly update and patch software to address vulnerabilities.
Implement web application firewalls to mitigate XSS attacks.

Patching and Updates

Stay informed about security advisories from Cisco.