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McAfee Security Bulletin - ePolicy Orchestrator update fixes possible localhost only access bypass and sensitive information leak vulnerability (CVE-2018-6671 and CVE-2018-6672)
Security Bulletins ID:   SB10240
Last Modified:  6/14/2018


First Published: June 14, 2018
 Impact of Vulnerability: Improper Access Control (CWE-287)
Information Leak/Disclosure (CWE-717, OWASP 2004:A6)
 CVE ID: CVE-2018-6671
 Severity Rating: Medium
 CVSS v3 Base/Temporal Scores: CVE-2018-6671: 4.7/4.2
CVE-2018-6672: 5.7/5.1
 Recommendations: Upgrade to latest ePolicy Orchestrator (ePO) patch
 Security Bulletin Replacement: None
 Affected Software:
  • ePO 5.3.3, 5.3.2, 5.3.1, and 5.3.0
  • ePO 5.9.1 and 5.9.0
 Location of updated software: http://www.mcafee.com/us/downloads/downloads.aspx
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Article contents: Vulnerability Description
This update resolves all of the following vulnerabilities.

NOTE: The following links were not yet populated with CVE details at the time of publication of this Security Bulletin.
  1. CVE-2018-6671   
    Application protections bypass vulnerability in McAfee ePolicy Orchestrator (ePO) 5.3.0 through 5.3.3 and 5.9.0 through 5.9.1 allows remote authenticated users to bypass localhost only access security protection for some ePO features via a specially crafted HTTP request.
  2. CVE-2018-6672
    Information disclosure vulnerability in McAfee ePolicy Orchestrator (ePO) 5.3.0 through 5.3.3 and 5.9.0 through 5.9.1 allows authenticated users to view sensitive information in plain text format via unspecified vectors.
To remediate this issue:
  • McAfee recommends that users of ePO 5.3.2 or earlier upgrade to ePO 5.3.3 or 5.9.1 and apply EPO5xHF1229850.
  • McAfee recommends that users of ePO 5.3.3 apply EPO5xHF1229850.
  • McAfee recommends that users of ePO 5.9.0 upgrade to ePO 5.9.1 and apply EPO5xHF1229850.
  • McAfee recommends that users of ePO 5.9.1 apply EPO5xHF1229850.
To remediate this issue, go to the Product Downloads site, and download the applicable product hotfix file:
Product Type File Name Release Date
ePO 5.9.1  Hotfix EPO5xHF1229850.zip June 14, 2018
ePO 5.3.3 Hotfix EPO5xHF1229850.zip June 14, 2018
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
ePO 5.1.x is currently End of Life (EOL). McAfee recommends that all customers using ePO 5.1.x upgrade to 5.3.x or 5.9.x.
None. McAfee strongly encourages installing the latest ePO hotfix specified in the Remediation table.
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?
  1. CVE-2018-6671
    Base Score 4.7
    Attack Vector (AV) Network (N)
    Attack Complexity (AC) High (H)
    Privileges Required (PR) None (N)
    User Interaction (UI) Required (R)
    Scope (S) Changed (C)
    Confidentiality (C) Low (L)
    Integrity (I) Low (L)
    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.
  2. CVE-2018-6672
    Base Score 4.3
    Attack Vector (AV) Network (N)
    Attack Complexity (AC) Low (L)
    Privileges Required (PR) Low (L)
    User Interaction (UI) None (N)
    Scope (S) Unchanged (U)
    Confidentiality (C) None (N)
    Integrity (I) Low (L)
    Availability (A) None (N)
    Temporal Score (Overall) 4.3
    Exploitability (E) Not Defined (X)
    Remediation Level (RL) Not Defined (X)
    Report Confidence (RC) Not Defined (X)
    NOTE: The below CVSS version 3.0 vector was used to generate this score.
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) once 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?
McAfee's key priority is the security of our customers. If a vulnerability is found within any of McAfee's 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, patch, 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.

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:
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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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