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AUSCERT External Security Bulletin Redistribution
ESB-2021.1043
Data Loss Prevention for Windows update fixes one
vulnerability (CVE-2020-7346) (SB10344)
25 March 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: McAfee Data Loss Prevention (DLP) Endpoint for Windows
Publisher: McAfee
Operating System: Windows
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-7346
Original Bulletin:
https://kc.mcafee.com/corporate/index?page=content&id=SB10344
- --------------------------BEGIN INCLUDED TEXT--------------------
McAfee Security Bulletin - Data Loss Prevention for Windows update fixes one
vulnerability (CVE-2020-7346)
Security Bulletins ID : SB10344
Last Modified : 3/23/2021
Summary
First Published: March 23, 2021
+----------------+---------+-------------+------------------+--------+--------+
| | | | | |CVSS |
| |Impacted | |Impact of |Severity|v3.1 |
|Product: |Versions:|CVE ID: |Vulnerabilities: |Ratings:|Base/ |
| | | | | |Temporal|
| | | | | |Scores: |
+----------------+---------+-------------+------------------+--------+--------+
|Data Loss | | |CWE-269: Privilege| | |
|Prevention (DLP)|Prior to |CVE-2020-7346|escalation |High |7.8 / |
|Endpoint |11.6.100 | |vulnerability | |7.0 |
|for Windows | | | | | |
+----------------+---------+-------------+------------------+--------+--------+
|Recommendations:|Install or update DLP Endpoint for Windows 11.6.100 |
+----------------+------------------------------------------------------------+
|Security | |
|Bulletin |None |
|Replacement: | |
+----------------+------------------------------------------------------------+
|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
CVE-2020-7346
Privilege Escalation vulnerability in McAfee Data Loss Prevention (DLP) for
Windows prior to 11.6.100 allows a local, low privileged, attacker through the
use of junctions to cause the product to load DLLs of the attacker's choosing.
This requires the creation and removal of junctions by the attacker along with
sending a specific IOTL command at the correct time.
https://web.nvd.nist.gov/view/vuln/detailvulnId=CVE-2020-7346
https://cve.mitre.org/cgi-bin/cvename.cginame=CVE-2020-7346
Remediation
To remediate this issue, customers should update to DLP Endpoint for Windows
11.6.100.
Go to the Product Downloads site , and download the applicable product update
file:
+------------------------+--------+------+--------------+
|Product |Version |Type |Release Date |
+------------------------+--------+------+--------------+
|DLP Endpoint for Windows|11.6.100|Update|March 23, 2021|
+------------------------+--------+------+--------------+
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. All documentation is available at
https://docs.mcafee.com .
Acknowledgments
McAfee credits @smgorelik from Morphisec for responsibly reporting this flaw.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not
For endpoint products and ENS on other platforms:
Use the following instructions for endpoint or client-based products:
1. Right-click 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.
For DLPe ePO Extension:
Use the following instructions:
1. Log on to the ePO server.
2. Click Menu , Data Protection , DLP Policy .
3. Inside the DLP console click Help , About . 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: https://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-2020-7346: Privilege escalation in DLP Endpoint for Windows
+------------------------+--------------------+
|Base Score |7.8 |
+------------------------+--------------------+
|Attack Vector (AV) |Local (L) |
+------------------------+--------------------+
|Attack Complexity (AC) |Low (L) |
+------------------------+--------------------+
|Privileges Required (PR)|Low (L) |
+------------------------+--------------------+
|User Interaction (UI) |None (N) |
+------------------------+--------------------+
|Scope (S) |Unchanged (U) |
+------------------------+--------------------+
|Confidentiality (C) |High (H) |
+------------------------+--------------------+
|Integrity (I) |High (H) |
+------------------------+--------------------+
|Availability (A) |High (H) |
+------------------------+--------------------+
|Temporal Score (Overall)|7.0 |
+------------------------+--------------------+
|Exploitability (E) |Proof-of-Concept (P)|
+------------------------+--------------------+
|Remediation Level (RL) |Official Fix (O) |
+------------------------+--------------------+
|Report Confidence (RC) |Confirmed (C) |
+------------------------+--------------------+
NOTE: The below CVSS version 3.1 vector was used to generate this score.
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculatorvector=AV:L/AC:L/PR:L/UI:N
/S:U/C:H/I:H/A:H/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 https://
www.mcafee.com/us/threat-center/product-security-bulletins.aspx . To see
Security Bulletins for McAfee Enterprise products on this website click
Enterprise 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 https://
www.mcafee.com/us/threat-center/product-security-bulletins.aspx . To report an
issue, 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.
View our PSIRT policy on the McAfee PSIRT website at https://www.mcafee.com/us/
threat-center/product-security-bulletins.aspx by clicking 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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