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McAfee Security Bulletin – ePolicy Orchestrator update fixes a TLS issue between ePolicy Orchestrator Agent Handler and SQL Server (CVE-2019-3619)
Security Bulletins ID:   SB10286
Last Modified:  7/8/2019

Summary

First Published: July 2, 2019
 
 Impact of Vulnerability: Insufficient Transport Layer Protection (CWE-818, OWASP 2010:A9)
 CVE ID: CVE-2019-3619
 Severity Rating: Medium
 CVSS v3 Base/Temporal Scores: 6.8 / 6.3
 Recommendations: Install one of the following ePolicy Orchestrator (ePO) versions:
  • 5.10.0 Update 4
  • 5.9.1 Hotfix 1267793 (HF1267793)
 Security Bulletin Replacement: None
 Affected Software:
  • ePO 5.10.0
  • ePO 5.9.0 and 5.9.1
 Location of updated software: http://www.mcafee.com/us/downloads/downloads.aspx

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Article contents: Vulnerability Description
ePO offers the ability to configure the communication between the McAfee Agent Handler and the SQL Server to be plain text or encrypted over TLS. The Agent Handler was only honoring some of the TLS options, and was incorrectly reverting to plain text communication for the others.
 
CVE-2019-3619:
Information Disclosure vulnerability in the Agent Handler in McAfee ePolicy Orchestrator (ePO) 5.9.x and 5.10.0 before 5.10.0 Update 4 allows a remote unauthenticated attacker to view sensitive information in plain text via sniffing the traffic between the Agent Handler and the SQL Server.
Remediation
McAfee strongly recommends that you install the latest update or hotfix for your version of ePO.
  • Users of ePO 5.10.0 – Update to 5.10.0 Update 4.
  • Users of ePO 5.9.1 – Apply HF1267793, or upgrade to ePO 5.10.0 Update 4.
  • Users of ePO 5.9.0 – Upgrade to ePO 5.9.1 and apply HF1267793 or upgrade to ePO 5.10.0 Update 4.   
Go to the Product Downloads site, and download the applicable product update/hotfix file:
 
Product Version Type File Name Release Date
ePO 5.10.0 Update   ePO 5.10.0 Update 4 July 2, 2019
ePO 5.9.1 Hotfix EPO591HF1267793.zip July 4, 2019
 
Download and Installation Instructions
See KB56057 for instructions to download McAfee products, documentation, updates, and hotfixes. Review the Release Notes and the Installation Guide, which you can download from the Documentation tab, for instructions install these updates.
Workaround
McAfee strongly recommends that you install the available update/hotfix. If you cannot, consider forcing encryption while connecting to the database as a temporary workaround.

Workaround 1:
To enable encryption on the SQL Server:

NOTE: This workaround requires ePO to be configured to use TLS when connecting to the SQL Server. 
  1. In SQL Server Configuration Manager, expand SQL Server Network Configuration, right-click Protocols for, and then select Properties.
  2. On the Flags tab, click Yes in the Force Encryption box, and then click OK to close the dialog box.
  3. Restart the SQL Server service.
Workaround 2:
  1. Follow KB84628 to make sure that the SQL Server certificate is trusted.
  2. Log on to the ePO console as Administrator.
  3. Navigate to: https://<ePO_Hostname_or_IP>:<port>/core/config
  4. Make sure that Always use SSL and require a trusted server certificate is selected for SSL communication with the database server.
  5. Make sure that Test Connection is successful and Apply the changes.
  6. Restart the McAfee ePO services.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not?
For ePO:
Use the following instructions for ePO:
Check the version and build of ePO that is installed. For information about 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, 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 the successful exploitation of the issue being scored.
 
What are the CVSS scoring metrics?

CVE-2019-3619: McAfee ePO Agent Handler not enforcing TLS
 
Base Score 6.8
Attack Vector (AV) Adjacent Network (A)
Attack Complexity (AC) Low (L)
Privileges Required (PR) High (H)
User Interaction (UI) None (N)
Scope (S) Unchanged (U)
Confidentiality (C) High (H)
Integrity (I) High (H)
Availability (A) High (H)
Temporal Score (Overall) 6.3
Exploitability (E) Functional exploit exists (F)
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.
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Where can I find a list of all Security Bulletins?
All Security Bulletins are published on our external PSIRT website at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx > Security Bulletins. Security Bulletins are retired (removed) after a product is both End of Sale and End of Support (End of Life).
 
How do I report a product vulnerability to McAfee?
If you have information about a security issue or vulnerability with a McAfee product, visit the McAfee PSIRT website for instructions at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx > Report a Security Vulnerability.
 
How does McAfee respond to this and any other reported security flaws?
Our key priority is the security of our customers. If a vulnerability is found within any McAfee software or services, we work closely with the relevant security software development team to ensure the rapid and effective development of a fix and communication plan.
 
McAfee only publishes Security Bulletins if they include something actionable such as a workaround, mitigation, version update, or hotfix. Otherwise, we would simply be informing the hacker community that our products are a target, putting our customers at greater risk. For products that are updated automatically, a non-actionable Security Bulletin might be published to acknowledge the discoverer.
 
View our PSIRT policy on the McAfee PSIRT website at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx > About PSIRT.
Resources
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.
Disclaimer
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 preceding 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 canceled at any time.

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