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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.3196
Data Loss Prevention Endpoint for Windows update fixes two vulnerabilities
                (CVE-2019-3633 and CVE-2019-3634) (SB10295)
                              22 August 2019

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

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

Product:           McAfee Data Loss Prevention Endpoint
Publisher:         McAfee
Operating System:  Windows
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3634 CVE-2019-3633 

Original Bulletin: 
   https://kc.mcafee.com/corporate/index?page=content&id=SB10295

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

McAfee Security Bulletin - Data Loss Prevention Endpoint for Windows update
fixes two vulnerabilities (CVE-2019-3633 and CVE-2019-3634)

Security Bulletins ID   : SB10295

Last Modified           : 8/20/2019

Summary

First Published: August 20, 2019
+-------------------+---------------------------------------------------------+
|Impact of          |Denial of Service (CWE-730, OWASP 2004:A9)               |
|Vulnerability:     |                                                         |
+-------------------+---------------------------------------------------------+
|CVE ID:            |CVE-2019-3633                                            |
|                   |CVE-2019-3634                                            |
+-------------------+---------------------------------------------------------+
|Severity Rating:   |CVE-2019-3633 - Medium                                   |
|                   |CVE-2019-3634 - Medium                                   |
+-------------------+---------------------------------------------------------+
|CVSS v3 Base/      |CVE-2019-3633 - 4.4 / 4.0                                |
|Temporal Scores:   |CVE-2019-3634 - 4.4 / 4.0                                |
+-------------------+---------------------------------------------------------+
|Recommendations:   |Update to Data Loss Prevention Endpoint (DLP Endpoint)   |
|                   |for Windows 11.3.2.82 or to 11.1.210.32                  |
+-------------------+---------------------------------------------------------+
|Security Bulletin  |None                                                     |
|Replacement:       |                                                         |
+-------------------+---------------------------------------------------------+
|                   |DLP Endpoint for Windows:                                |
|Affected Software: |                                                         |
|                   |  o 11.3.x earlier than 11.3.2.82                        |
|                   |  o 11.1.x earlier than 11.1.210.32                      |
+-------------------+---------------------------------------------------------+
|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 addresses two vulnerabilities in McAfee Data Loss
Prevention Endpoint (DLP Endpoint) for Windows. If successful, DLP Endpoint
would trigger a sudden halt of the operating system, causing a "blue screen."
To exploit this scenario, an attacker would require a local user to run
carefully constructed malicious software which would then pass the malicious
message into the DLP Endpoint Agent.

 1. CVE-2019-3633
    Buffer overflow in McAfee Data Loss Prevention (DLP Endpoint) for Windows
    11.x prior to 11.3.2.82 allows a local user to cause the Windows operating
    system to "blue screen" via a carefully constructed message sent to DLP
    Endpoint which bypasses DLP Endpoint internal checks and results in DLP
    Endpoint reading unallocated memory.
    https://web.nvd.nist.gov/view/vuln/detailvulnId=CVE-2019-3633
    https://cve.mitre.org/cgi-bin/cvename.cginame=CVE-2019-3633
 2. CVE-2019-3633
    Buffer overflow in McAfee Data Loss Prevention (DLP Endpoint) for Windows
    11.x prior to 11.3.2.82 allows a local user to cause the Windows operating
    system to "blue screen" via an encrypted message sent to DLP Endpoint which
    when decrypted results in DLP Endpoint reading unallocated memory.
    https://web.nvd.nist.gov/view/vuln/detailvulnId=CVE-2019-3634
    https://cve.mitre.org/cgi-bin/cvename.cginame=CVE-2019-3634

Remediation
To remediate these issues, go to the Product Downloads site, and download the
applicable product update file:

  o For DLP Endpoint 11.3.x or earlier, update to 11.3.2.82.
  o For DLP Endpoint 11.1.x, upgrade to 11.3.2.82 or update to 11.1.210.32.

NOTE: DLP Endpoint 11.2.x went End of Life at the release of 11.3.0 on July 23,
2019.
+--------------------+-----------+------+---------------+
|Product             |Versions   |Type  |Release Date   |
+--------------------+-----------+------+---------------+
|DLP Endpoint Windows|11.3.2.82  |Hotfix|August 20, 2019|
+--------------------+-----------+------+---------------+
|DLP Endpoint Windows|11.1.210.32|Hotfix|August 20, 2019|
+--------------------+-----------+------+---------------+

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 for
instructions on how to install these updates.. You can download the documents
from the Documentation tab.
Acknowledgments
McAfee credits Liu Jie of Fujitsu Nanda Software Tech (FNST) for reporting
these flaws.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not
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. Select 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 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-2018-3633: Buffer overflow in DLP Endpoint for Windows
    +------------------------+--------------------+
    |Base Score              |4.4                 |
    +------------------------+--------------------+
    |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)     |None (N)            |
    +------------------------+--------------------+
    |Integrity (I)           |None (N)            |
    +------------------------+--------------------+
    |Availability (A)        |High (H)            |
    +------------------------+--------------------+
    |Temporal Score (Overall)|4.0                 |
    +------------------------+--------------------+
    |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-calculatorvector=AV:L/AC:H/PR:L/UI:R/S:U/C:N/
    I:N/A:H/E:P/RL:O/RC:C
 2. CVE-2018-3634: Buffer overflow in DLP Endpoint for Windows
    +------------------------+--------------------+
    |Base Score              |4.4                 |
    +------------------------+--------------------+
    |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)     |None (N)            |
    +------------------------+--------------------+
    |Integrity (I)           |None (N)            |
    +------------------------+--------------------+
    |Availability (A)        |High (H)            |
    +------------------------+--------------------+
    |Temporal Score (Overall)|4.0                 |
    +------------------------+--------------------+
    |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-calculatorvector=AV:L/AC:H/PR:L/UI:R/S:U/C:N/
    I:N/A:H/E:P/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) 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
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 :

  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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