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McAfee Security Bulletin - ePolicy Orchestrator update fixes Cross-Site Scripting (CVE-2018-6659) and Directory Traversal (CVE-2018-6660) vulnerabilities
Security Bulletins ID:   SB10228
Last Modified:  4/3/2018

Summary

First Published: March 9, 2018
 
 Impact of Vulnerability: Cross-Site Scripting (XSS) (CWE-79)
Directory Traversal (CWE-22)
 CVE ID: CVE-2018-6659
CVE-2018-6660
 Severity Rating: Low, Medium
 CVSS v3 Base/Temporal Scores: CVE-2018-6659: 3.7/3.4
CVE-2018-6660: 6.2/5.6
 Recommendations: Upgrade to the latest ePolicy Orchestrator (ePO) patch
 Security Bulletin Replacement: None
 Affected Software:
  • ePO 5.3.2, 5.3.1, and 5.3.0
  • ePO 5.9.0
 Location of updated software: http://www.mcafee.com/us/downloads/downloads.aspx
 
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Article contents: Vulnerability Description
  1. CVE-2018-6659
    Reflected Cross-Site Scripting vulnerability in McAfee ePolicy Orchestrator (ePO) 5.3.2, 5.3.1, 5.3.0 and 5.9.0 allows remote authenticated users to exploit an XSS issue via not sanitizing the user input.
    http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-6659
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6659
  1. CVE-2018-6660
    Directory Traversal vulnerability in McAfee ePolicy Orchestrator (ePO) 5.3.2, 5.3.1, 5.3.0 and 5.9.0 allows administrators to use Windows alternate data streams, which could be used to bypass the file extensions, via not properly validating the path when exporting a particular XML file.
    http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-6660  
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6660
Affected Component:
  • ePO core services
Remediation
To remediate this issue:
  • Users of ePO 5.3.2 or earlier are recommended to upgrade to ePO 5.3.3 or 5.9.1.
  • Users of ePO 5.9.0 are recommended to upgrade to ePO 5.9.1.
Go to the Product Downloads site and download the applicable product patch files:
 
Product Type File Name Release Date
ePO 5.9.1 Patch EPO591L.zip November 30, 2017
ePO 5.3.3 Patch EPO533L.zip July 26, 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.
 
Product Specific Notes
ePO 5.1.x is End of Life (EOL). McAfee recommends that all customers using ePO 5.1.x upgrade to 5.3.x or 5.9.x.
 
Workaround
None. McAfee strongly encourages installing the latest ePO patch specified in the Remediation table.
 
Acknowledgements
McAfee credits Christoffer Wiman from basalt for reporting this flaw.
 
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not?
For ePO/Server products:
Use the following instructions for server-based products:
  • Check the version and build of ePO that is installed. For information about how to check the version, see: KB52634.
  • Create a query in ePO for the product version of the product installed in your organization.
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-2018-6659: ePO Cross-Site Scripting vulnerability
     
    Base Score 3.7
    Attack Vector (AV) Network (N)
    Attack Complexity (AC) High (H)
    Privileges Required (PR) Low (L)
    User Interaction (UI) Required (R)
    Scope (S) Unchanged (U)
    Confidentiality (C) Low (L)
    Integrity (I) None (N)
    Availability (A) Low (L)
    Temporal Score (Overall) 3.4
    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.
    https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L/E:P/RL:O/RC:C  
  1. CVE-2018-6660: ePO Directory Traversal vulnerability
     
    Base Score 6.2
    Attack Vector (AV) Network (N)
    Attack Complexity (AC) High (H)
    Privileges Required (PR) High (H)
    User Interaction (UI) Required (R)
    Scope (S) Changed (C)
    Confidentiality (C) None (N)
    Integrity (I) Low (L)
    Availability (A) High (H)
    Temporal Score (Overall) 5.6
    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.
    https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:H/E:P/RL:O/RC:C
Where can I find a list of all Security Bulletins or how do I report a product vulnerability?
All Security Bulletins are published onto our external PSIRT website. Security Bulletins are retired once a product is both End of Life and End of Support.
 
If you have information about a security issue or vulnerability with a McAfee product, visit the McAfee PSIRT website.
 
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 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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