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McAfee Security Bulletin: Endpoint Security Web Control 10.2 update fixes a Cross-Site Scripting Vulnerability (CVE-2016-8011)
Security Bulletins ID:   SB10180
Last Modified:  11/5/2018


First Published: 12/5/2016
 Impact of Vulnerability:  Cross-Site Scripting (XSS) (CWE-79)
 CVE Numbers:  CVE-2016-8011
 Severity Rating:  Medium
 Base / Overall CVSS v3 Scores:  4.3 / 3.9
  • Apply Endpoint Security (ENS) Web Control 10.2.0 Hotfix 1164442
  • Upgrade ENS 10.1 to 10.2 and then apply ENS Web Control 10.2.0 Hotfix 1164442
 Security Bulletin Replacement:  None
 Affected Software:  See the McAfee Product Vulnerability Status lists below
 Location of Updated Software:  http://www.mcafee.com/us/downloads/downloads.aspx

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Article contents:


Cross-Site Scripting in ENS Web Control 10.2 allows attackers to inject arbitrary web script or HTML via a crafted website.

Cross-site scripting vulnerability in McAfee Endpoint Security (ENS) Web Control before allows attackers to inject arbitrary web script or HTML via a crafted web site.
Improper Neutralization of Input during Web Page Generation ('Cross-site Scripting')
Affected Component:
  • Web Control
McAfee Product Vulnerability Status

Investigation into all McAfee products is ongoing. This security bulletin will be updated as additional information is available. Not every version of the “Vulnerable and Updated” products may be vulnerable. See the Product Specific Notes section below for details.
Vulnerable and Updated
  1. Endpoint Security 10.2
  2. SiteAdvisor Enterprise 3.5
 For a description of each product, see: http://www.mcafee.com/us/apps/products-az.aspx.


Go to the Product Downloads site and download the applicable product hotfix file:
Product Type Version File Name Release Date
Endpoint Security 10.2 Hotfix Web_Control_10.2.0.408.1_HF_1164442.zip December 5, 2016
SiteAdvisor Enterprise 3.5 Patch 5 Repost Patch SAEClient_350_Repost5_ML.zip December 14, 2016

For further details, refer to the following release notes:
PD26758 - Endpoint Security Web Control 10.2.0 Hotfix 1164442 Release Notes

Download and Installation Instructions
See KB56057 for instructions on how to download McAfee products, documentation, security updates, patches, and hotfixes. Review the Release Notes and the Installation Guide, which you can download from the Documentation tab, for instructions on how to install these updates.

Product Specific Notes

This vulnerability allow a malicious website to render XSS payload within the block or warn page. XSS payload can be JavaScript that could cause a change in the content of block and warn pages. The change in the content can be redirection, tampering, or modification of the advisor message being displayed on the block or warn page.


None. Install the provided hotfix update.


None. Install the provided hotfix update.


McAfee credits Roberto Suggi Liverani from NCIA (NATO) for reporting this flaw.

Frequently Asked Questions (FAQs)

How do I know whether my McAfee product is vulnerable or not?

For Endpoint products:
Use the following instructions for endpoint or client based products:
  1. Right-click on the McAfee tray shield icon on the Windows task bar.
  2. Select Open Console.
  3. In the console, select Action Menu.
  4. In the Action Menu, select Product Details. The product version is displayed.
For ePO:
Check the version and build of ePO that is installed. For information on how to check the version, see KB52634.

What is CVSS?
CVSS, or Common Vulnerability Scoring System, is the result of the National Infrastructure Advisory Council’s effort to standardize a system of assessing the criticality of a vulnerability. This system offers an unbiased criticality score between 0 and 10 that customers can use to judge how critical a vulnerability is and plan accordingly. For more information, please visit the CVSS website at: http://www.first.org/cvss/.

When calculating CVSS scores, McAfee has adopted a philosophy that fosters consistency and repeatability. Our guiding principle for CVSS scoring is to score the exploit under consideration by itself. We consider only the immediate and direct impact of the exploit under consideration. We do not factor into a score any potential follow-on exploits that might be made possible by successful exploitation of the issue being scored
What are the CVSS scoring metrics that have been used?

CVE-2016-8011: Cross-site Scripting Vulnerability
 Base Score 4.3
 Attack Vector (AV) Network (N)
 Attack Complexity (AC) Low (L)
 Privileges Required (PR) None (N)
 User Interaction (UI) Required (R)
 Scope (S) Unchanged (U)
Confidentiality (C) None (N)
Integrity (I) Low (L)
Availability (A) None (N)
 Temporal Score (Overall) 3.9
 Exploitability (E) Proof-of-Concept (P)
 Remediation Level (RL) Official Fix (O)
 Report Confidence (RC) Confirmed (C)

NOTE: The below CVSS version 3.0 vector was used to generate this score.


Where can I find a list of all security bulletins or how do I report a product vulnerability?
To find a list of all security bulletins, or if you have information about a security issue or vulnerability with a McAfee product, please visit our product security website at: http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx.


To contact Technical Support, log on to the ServicePortal and go to the Create a Service Request page at https://support.mcafee.com/ServicePortal/faces/serviceRequests/createSR:
  • If you are a registered user, type your User Id and Password, and then click Log In.
  • If you are not a registered user, click Register and complete the required fields. Your password and logon instructions will be emailed to you.


The information provided in this security bulletin is provided as is without warranty of any kind. McAfee disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall McAfee or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits, or special damages, even if McAfee or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Any future product release dates mentioned in this security bulletin are intended to outline our general product direction and they should not be relied on in making a purchasing decision. The product release dates are for information purposes only, and may not be incorporated into any contract. The product release dates are not a commitment, promise, or legal obligation to deliver any material, code, or functionality. The development, release, and timing of any features or functionality described for our products remains at our sole discretion and may be changed or cancelled at any time.

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