CVE-2019-1866 Explained : Impact and Mitigation

A vulnerability has been identified in versions of Cisco Webex Business Suite prior to 39.1.0. This vulnerability could potentially be exploited by an attacker who is not authenticated or remote, impacting the application's functionality and reliability due to inadequate validation of host header values.

Understanding CVE-2019-1866

This CVE pertains to a vulnerability in Cisco Webex Business Suite that could allow unauthorized manipulation of header values, potentially leading to user redirection.

What is CVE-2019-1866?

The vulnerability in Cisco Webex Business Suite before version 39.1.0 allows attackers to manipulate header values, redirecting users to malicious sites.

The Impact of CVE-2019-1866

The vulnerability poses a low severity risk, with a CVSS base score of 3.1. While it requires user interaction, an attacker could exploit it to compromise the integrity of the application.

Technical Details of CVE-2019-1866

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper validation of host header values in Cisco Webex Business Suite, enabling unauthorized manipulation by attackers.

Affected Systems and Versions

Product: Cisco Webex Business Suite
Vendor: Cisco
Versions Affected: Custom versions below 39.1.0

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Integrity Impact: Low
Confidentiality Impact: None
Availability Impact: None

Mitigation and Prevention

To address CVE-2019-1866, follow these mitigation strategies:

Immediate Steps to Take

Update Cisco Webex Business Suite to version 39.1.0 or higher to eliminate the vulnerability.
Monitor network traffic for any suspicious activity that could indicate exploitation.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Educate users on safe browsing practices and the importance of software updates.

Patching and Updates

Regularly apply security patches and updates provided by Cisco to ensure ongoing protection against vulnerabilities.