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McAfee Security Bulletin - Data Loss Prevention Endpoint ePO extension update fixes Cross Site Scripting (XSS) vulnerability (CVE-2017-3948)
Security Bulletins ID:   SB10202
Last Modified:  7/6/2017


First Published: 6/21/2017
 Impact of Vulnerability:  Multiple Stored Cross Site Scripting (XSS)
 CVE Numbers:  CVE-2017-3948
 Severity Rating:  Medium
 CVSS v3 Base / Temporal Scores:  4.6 / 4.2
 Recommendations:  Install or update to one of the following:
  • Data Loss Prevention Endpoint (DLP Endpoint) 11.0
  • DLP Endpoint Hotfix 10.0.260 extension
  • DLP Endpoint 9.4.300 extension
 Security Bulletin Replacement:  None
 Affected Software:  DLP Endpoint 10.0 and earlier
 Location of Updated Software:  http://www.mcafee.com/us/downloads/downloads.aspx

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Article contents:


Cross Site Scripting (XSS) in IMG Tags in the ePO extension in McAfee Data Loss Prevention Endpoint (DLP Endpoint) 10.0 and earlier allows authenticated users to inject arbitrary web script or HTML via injecting malicious JavaScript into a user's browsing session.


Install DLP Endpoint ePO extension 11.0 on all affected systems.

Go to the Product Downloads site and download the applicable product patch file:
Product Type Version Release Date
DLP Endpoint ePO extension Full release 11.0  June 1, 2017
DLP Endpoint ePO extension Hotfix 10.0.260 July 6, 2017
DLP Endpoint ePO extension Patch 9.4.300 July 6, 2017

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.


None. McAfee strongly recommends that you install DLP Endpoint 11.0 extension.


McAfee credits EKZHIN EAR from NCI Agency Cyber Security 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 DLP Endpoint ePO extension:
Use the following instructions:
  1. Log on to ePO server.
  2. Click Menu, Data Protection, DLP Policy.
  3. Inside the DLP console click the Help menu item, About. The product version is displayed.
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-2017-3948: DLP Endpoint ePO extension XSS vulnerability
 Base Score 4.6
 Attack Vector (AV) Local (L)
 Attack Complexity (AC) High (H)
 Privileges Required (PR) High (H)
 User Interaction (UI) Required (R)
 Scope (S) Unchanged (U)
 Confidentiality (C) Low (L)
 Integrity (I) High (H)
 Availability (A) None (N)
 Temporal Score (Overall) 4.2
 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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