Operating System:

[Win]

Published:

14 February 2020

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.3789.2
McAfee Security Bulletin - Endpoint Security for Windows update fixes three
     vulnerabilities (CVE-2019-3652, CVE-2019-3653, and CVE-2020-7251)
                             14 February 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           McAfee Endpoint Security for Windows
Publisher:         McAfee
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Reduced Security                -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-7251 CVE-2019-3653 CVE-2019-3652

Original Bulletin: 
   https://kc.mcafee.com/corporate/index?page=content&id=SB10299

Revision History:  February 14 2020: Additional CVE added and product updates released.
                   October  10 2019: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------


McAfee Security Bulletin - Endpoint Security for Windows update fixes three
vulnerabilities (CVE-2019-3652, CVE-2019-3653, and CVE-2020-7251)
Security Bulletins ID:   SB10299
Last Modified:  2/13/2020


Summary

First Published: October 8, 2019
 
+----------------------+------------------------------------------------------+
| Impact of            |CVE-2019-3652 - Code Injection (CWE-94)               |
|Vulnerability:        |CVE-2019-3653 - Improper Access Control (CWE-287)     |
|                      |CVE-2020-7251 - Improper Access Control (CWE-287)     |
+----------------------+------------------------------------------------------+
|                      |CVE-2019-3652                                         |
| CVE ID:              |CVE-2019-3653                                         |
|                      |CVE-2020-7251                                         |
+----------------------+------------------------------------------------------+
|                      |CVE-2019-3652: Medium                                 |
| Severity Rating:     |CVE-2019-3653: Medium                                 |
|                      |CVE-2020-7251: Medium                                 |
+----------------------+------------------------------------------------------+
| CVSS v3 Base/Temporal|CVE-2019-3652: 5.0 / 4.3                              |
|Scores:               |CVE-2019-3653: 5.0 / 4.3                              |
|                      |CVE-2020-7251: 5.0 / 4.3                              |
+----------------------+------------------------------------------------------+
|                      |Install or update to one of the following Endpoint    |
|                      |Security (ENS) versions:                              |
| Recommendations:     |                                                      |
|                      |  o ENS 10.7.0 February 2020 Update                   |
|                      |  o ENS 10.6.1 February 2020 Update                   |
|                      |  o ENS 10.5.5 October 2019 Update                    |
+----------------------+------------------------------------------------------+
| Security Bulletin    |Update to CVE-2019-3653 for ENS 10.6.1.               |
|Replacement:          |                                                      |
+----------------------+------------------------------------------------------+
|                      |ENS for Windows:                                      |
|                      |                                                      |
| Affected Software:   |  o 10.7.x                                            |
|                      |  o 10.6.x                                            |
|                      |  o 10.5.x                                            |
+----------------------+------------------------------------------------------+
| Location of updated  |http://www.mcafee.com/us/downloads/downloads.aspx     |
|software:             |                                                      |
+----------------------+------------------------------------------------------+

To receive email notification when this Security Bulletin is updated, click
Subscribe on the right side of the page. You must be logged on to subscribe.

Article contents:

  o Vulnerability Description
  o Remediation
  o Acknowledgments
  o Frequently Asked Questions (FAQs)
  o Resources
  o Disclaimer

Vulnerability Description
This Security Bulletin covers three vulnerabilities in ENS. To exploit these
vulnerabilities, an attacker would need to gain access to the system.

The initial fix for this issue in CVE-2019-3653 did not prevent an older
version of the ESConfig Tool from modifying the configuration for later
versions. CVE-2020-7251 addresses this issue for ENS 10.6.1 and 10.7.0.

 1. CVE-2019-3652 - ENS code injection in EPSetup.exe
    Code Injection vulnerability in EPSetup.exe in McAfee Endpoint Security
    (ENS) prior to 10.6.1 October 2019 Update allows local user to get their
    malicious code installed by the ENS installer via code injection into
    EPSetup.exe by an attacker with access to the installer.
    https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-3652  
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3652
     
 2. CVE-2019-3653 - ESConfig Tool access not controlled
    Improper access control vulnerability in configuration tool in McAfee
    Endpoint Security (ENS) prior to 10.6.1 October 2019 Update allows local
    user to disable security features via unauthorized use of the configuration
    tool.
    https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-3653  
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3653
     
 3. CVE-2020-7251 - ESConfig Tool able to edit configuration for newer versions
    Improper access control vulnerability in configuration tool in McAfee
    Endpoint Security (ENS) prior to 10.6.1 February 2020 Update allows local
    user to disable security features via unauthorized use of the configuration
    tool from older versions of ENS.
    https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7251  
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7251

Remediation
To remediate these issues:

  o Customers using ENS 10.7.x should update to ENS 10.7.0 February 2020
    Update.
  o Customers using ENS 10.6.x should either upgrade to ENS 10.7.0 February
    2020 Update or update to ENS 10.6.1 February 2020 Update.
  o Customers using ENS 10.5.x should update to ENS 10.5.5 October 2019 update,
    or upgrade to ENS 10.6.1 October 2019 update.

Go to the Product Downloads site, and download the applicable product update
files:
 
+--------------+------------------------+------+---------------+--------------+
|Product       |Version                 |Type  |Release Date   |Restart       |
|              |                        |      |               |Needed?       |
+--------------+------------------------+------+---------------+--------------+
|ENS for       |10.7.0 February 2020    |Update|February 13,   |No            |
|Windows       |Update                  |      |2020           |              |
+--------------+------------------------+------+---------------+--------------+
|ENS for       |10.6.1 February 2020    |Update|February 13,   |No            |
|Windows       |Update                  |      |2020           |              |
+--------------+------------------------+------+---------------+--------------+
|ENS for       |10.5.5 October 2019     |Update|October 8, 2019|No            |
|Windows       |Update                  |      |               |              |
+--------------+------------------------+------+---------------+--------------+
 
Download and Installation Instructions
See KB56057 for instructions to download McAfee products, documentation,
updates, and hotfixes. See the Release Notes and the Installation Guide, which
you can download from the Documentation tab, for instructions to install these
updates.
Acknowledgments
CVE-2019-3652: McAfee credits Russell Wells from DRS for reporting this flaw.
CVE-2019-3653: McAfee credits Donny Maasland from Fox-IT for reporting this
flaw.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable?
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 taskbar.
 2. Click Open Console.
 3. In the console, select Action Menu.
 4. In the Action Menu, select Product Details. The product version displays.

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, which 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-2019-3652 - ENS code injection in EPSetup.exe
     
    +------------------------+--------------------+
    |Base Score              |5.0                 |
    +------------------------+--------------------+
    |Attack Vector (AV)      |Local (L)           |
    +------------------------+--------------------+
    |Attack Complexity (AC)  |High (H)            |
    +------------------------+--------------------+
    |Privileges Required (PR)|Low (L)             |
    +------------------------+--------------------+
    |User Interaction (UI)   |Required (R)        |
    +------------------------+--------------------+
    |Scope (S)               |Changed (C)         |
    +------------------------+--------------------+
    |Confidentiality (C)     |Low (L)             |
    +------------------------+--------------------+
    |Integrity (I)           |Low (L)             |
    +------------------------+--------------------+
    |Availability (A)        |Low (L)             |
    +------------------------+--------------------+
    |Temporal Score (Overall)|4.3                 |
    +------------------------+--------------------+
    |Exploitability (E)      |Proof-of-Concept (P)|
    +------------------------+--------------------+
    |Remediation Level (RL)  |Official Fix (O)    |
    +------------------------+--------------------+
    |Report Confidence (RC)  |Reasonable (R)      |
    +------------------------+--------------------+
 
    NOTE: The below CVSS version 3.0 vector was used to generate this score.
    https://nvd.nist.gov/cvss/v3-calculator?vector=AV:L/AC:H/PR:L/UI:R/S:C/C:L/
    I:L/A:L/E:P/RL:O/RC:R
     
 2. CVE-2019-3653 - ESConfig Tool access not controlled
     
    +------------------------+--------------------+
    |Base Score              |5.0                 |
    +------------------------+--------------------+
    |Attack Vector (AV)      |Local (L)           |
    +------------------------+--------------------+
    |Attack Complexity (AC)  |High (H)            |
    +------------------------+--------------------+
    |Privileges Required (PR)|Low (L)             |
    +------------------------+--------------------+
    |User Interaction (UI)   |Required (R)        |
    +------------------------+--------------------+
    |Scope (S)               |Unchanged (U)       |
    +------------------------+--------------------+
    |Confidentiality (C)     |High (H)            |
    +------------------------+--------------------+
    |Integrity (I)           |Low (L)             |
    +------------------------+--------------------+
    |Availability (A)        |None (N)            |
    +------------------------+--------------------+
    |Temporal Score (Overall)|4.3                 |
    +------------------------+--------------------+
    |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/cvss/v3-calculator?vector=AV:L/AC:H/PR:L/UI:R/S:U/C:H/
    I:L/A:N/E:P/RL:O/RC:C
     
 3. CVE-2020-7251 - ESConfig Tool able to edit configuration for newer version
     
    +------------------------+--------------------+
    |Base Score              |5.0                 |
    +------------------------+--------------------+
    |Attack Vector (AV)      |Local (L)           |
    +------------------------+--------------------+
    |Attack Complexity (AC)  |High (H)            |
    +------------------------+--------------------+
    |Privileges Required (PR)|Low (L)             |
    +------------------------+--------------------+
    |User Interaction (UI)   |Required (R)        |
    +------------------------+--------------------+
    |Scope (S)               |Unchanged (U)       |
    +------------------------+--------------------+
    |Confidentiality (C)     |High (H)            |
    +------------------------+--------------------+
    |Integrity (I)           |Low (L)             |
    +------------------------+--------------------+
    |Availability (A)        |None (N)            |
    +------------------------+--------------------+
    |Temporal Score (Overall)|4.3                 |
    +------------------------+--------------------+
    |Exploitability (E)      |Proof-of-Concept (P)|
    +------------------------+--------------------+
    |Remediation Level (RL)  |Official Fix (O)    |
    +------------------------+--------------------+
    |Report Confidence (RC)  |Reasonable (R)      |
    +------------------------+--------------------+
 
    NOTE: The below CVSS version 3.1 vector was used to generate this score.
    https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:L/AC:H/PR:L/
    UI:R/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C&version=3.1

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 software or services, we work closely with the
relevant security software development team to make sure 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:

  o If you are a registered user, type your User ID and Password, and then
    click Log In.
  o 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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