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McAfee Security Bulletin - ePolicy Orchestrator update fixes Tomcat vulnerability (CVE-2018-11784)
Security Bulletins ID:   SB10257
Last Modified:  12/11/2018

Summary

First Published: November 27, 2018
 
 Impact of Vulnerability: Invalidated Redirects and Forwards
 CVE ID: CVE-2018-11784
 Severity Rating: Medium
 CVSS v3 Base/Temporal Scores: 5.3 / 4.6
 Recommendations: Apply the standalone hotfix or update.
 Security Bulletin Replacement: None
 Affected Software:
  • ePolicy Orchestrator (ePO) 5.3.3, 5.3.2, 5.3.1, and 5.3.0
  • ePO 5.9.1 and 5.9.0
  • ePO 5.10
 Location of updated software: http://www.mcafee.com/us/downloads/downloads.aspx
 
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Article contents: Vulnerability Description
ePO runs on Apache Tomcat and according to the CVE listed below, the Tomcat update consumed by ePO is possibly vulnerable to invalidated redirects to any URI of an attacker's choice.
 
This ePO update resolves the following issue:

CVE-2018-11784
When the default servlet returned a redirect to a directory (for example, redirecting to /foo/ when the user requested /foo) a specially crafted URL could be used to cause the redirect to be generated to any URI of the attacker's choice.
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11784
https://nvd.nist.gov/vuln/detail/CVE-2018-11784

Affected Component:
  • ePO web core services
Remediation
To remediate this issue:
  • Users of ePO 5.3.2 or earlier are recommended to upgrade to ePO 5.3.3, 5.9.1, or 5.10 and apply the fix for the version you upgraded to. See the table below for the relevant fix.
  • Users of ePO 5.9.0 are recommended to upgrade to ePO 5.9.1 or 5.10 and apply the fix for the version you upgraded to. See the table below for the relevant fix.
  • Users of ePO 5.3.3 are recommended to apply EPO533HF1257674.zip.
  • Users of ePO 5.9.1 are recommended to apply EPO591HF1260432.zip.
  • Users of ePO 5.10.0 are recommended to apply ePO_5.10.0_Update_2.zip.
Go to the Product Downloads site, and download the applicable product update or hotfix file:
 
Product Type File Name Release Date
ePO 5.10.0 Update 2 Update  ePO_5.10.0_Update_2.zip December 11, 2018
ePO 5.9.1 Hotfix EPO591HF1260432.zip November 27, 2018
ePO 5.3.3 Hotfix EPO533HF1257674.zip November 27, 2018
 
*NOTE: McAfee will use commercially reasonable efforts to release an update by the planned date, but plans might change.

Download and Installation Instructions
See KB56057 for instructions on how 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 on how to install these updates.
Product Specific Notes
ePO 5.1.x reached End of Life on December 31, 2017. McAfee recommends that all customers upgrade to ePO 5.9.x or 5.10.x.
Workaround
None. Installing the latest ePO hotfix or update specified in the Remediation table is strongly encouraged.
Acknowledgments
None.
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-2018-11784: ePO and Apache Tomcat
 
Base Score 5.3
Attack Vector (AV) Network (N)
Attack Complexity (AC) Low (L)
Privileges Required (PR) None (N)
User Interaction (UI) None (N)
Scope (S) Unchanged (U)
Confidentiality (C) None (N)
Integrity (I) Low (L)
Availability (A) None (N)
Temporal Score (Overall) 4.6
Exploitability (E) Unproven (U)
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://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C

Where can I find a list of all Security Bulletins?

All Security Bulletins are published on our external PSIRT website. Go to http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx and click Security Bulletins - Corporate. Security Bulletins are removed when 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, go to the McAfee PSIRT website at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx and click 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.
 

To view our PSIRT policy, go to the McAfee PSIRT website at http://www.mcafee.com/us/threat-center/product-security-bulletins.aspx, and click 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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