CVE-2019-3639 : Exploit Details and Defense Strategies

McAfee Web Gateway (MWG) version 7.8.2.x before 7.8.2.12 is affected by a clickjack vulnerability that could allow remote attackers to conduct clickjacking attacks.

Understanding CVE-2019-3639

This CVE involves a security issue in the Adminstrator web console of McAfee Web Gateway (MWG) version 7.8.2.x.

What is CVE-2019-3639?

CVE-2019-3639 is a clickjack vulnerability in the McAfee Web Gateway (MWG) Adminstrator web console, allowing remote attackers to perform clickjacking attacks.

The Impact of CVE-2019-3639

The vulnerability has a CVSS base score of 7.1, with high confidentiality impact and low integrity impact. Attackers can exploit this issue to conduct clickjacking attacks.

Technical Details of CVE-2019-3639

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the Adminstrator web console of MWG version 7.8.2.x before 7.8.2.12 allows remote attackers to conduct clickjacking attacks using specially crafted web pages.

Affected Systems and Versions

Product: McAfee Web Gateway (MWG)
Vendor: McAfee, LLC
Versions Affected: 7.8.2.x (prior to 7.8.2.12)

Exploitation Mechanism

Attackers can exploit this vulnerability by creating a web page with an iframe that lacks an X-Frame-Options HTTP header, enabling clickjacking attacks.

Mitigation and Prevention

Protecting systems from CVE-2019-3639 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update McAfee Web Gateway to version 7.8.2.12 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activity that could indicate exploitation.

Long-Term Security Practices

Implement security headers like X-Frame-Options to prevent clickjacking attacks.
Regularly update and patch all software and systems to address security vulnerabilities.
Educate users on safe browsing practices to minimize the risk of exploitation.
Consider security assessments and penetration testing to identify and address potential vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates for McAfee Web Gateway to address known vulnerabilities.