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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0894
        Advanced Threat Defense update fixes a privilege escalation
                  vulnerability (CVE-2020-7254) (SB10311)
                               12 March 2020

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

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

Product:           McAfee Advanced Threat Defense
Publisher:         McAfee
Operating System:  Network Appliance
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-7254  

Original Bulletin: 
   https://kc.mcafee.com/corporate/index?page=content&id=SB10311

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

McAfee Security Bulletin - Advanced Threat Defense update fixes a privilege
escalation vulnerability (CVE-2020-7254)

Security Bulletins ID   : SB10311
Last Modified           : 3/10/2020

Summary

First Published: March 10, 2020
+---------------------------+-------------------------------------------------+
|                           |Improper Privilege Management (CWE-269)          |
|Impact of Vulnerability:   |Permissions, Privileges, and Access Control      |
|                           |(CWE-264)                                        |
+---------------------------+-------------------------------------------------+
|CVE ID:                    |CVE-2020-7254                                    |
+---------------------------+-------------------------------------------------+
|Severity Rating:           |High                                             |
+---------------------------+-------------------------------------------------+
|CVSS v3 Base/Temporal      |7.7 / 6.9                                        |
|Scores:                    |                                                 |
+---------------------------+-------------------------------------------------+
|Recommendations:           |Update to Advanced Threat Defense (ATD) 4.8.2    |
+---------------------------+-------------------------------------------------+
|Security Bulletin          |None                                             |
|Replacement:               |                                                 |
+---------------------------+-------------------------------------------------+
|Affected Software:         |ATD 4.x prior to 4.8.2                           |
+---------------------------+-------------------------------------------------+
|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
By default, there is no access to the command line for users and
administrators.

CVE-2020-7254
Privilege Escalation vulnerability in the command line interface in McAfee
Advanced Threat Defense (ATD) 4.x prior to 4.8.2 allows local users to execute
arbitrary code via improper access controls on the sudo command.
http://web.nvd.nist.gov/view/vuln/detailvulnId=CVE-2020-7254
http://cve.mitre.org/cgi-bin/cvename.cginame=CVE-2020-7254
Remediation
To remediate this issue, go to the Product Downloads site, and download the
latest version. See the Frequently Asked Questions section for the path to
upgrade from older versions to this version.
+-------+-------+------+--------------+
|Product|Version|Type  |Release Date  |
+-------+-------+------+--------------+
|ATD    |4.8.2  |Update|March 10, 2020|
+-------+-------+------+--------------+

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.

Migration
See the Migration Guide for instructions to get to a protected version.

IMPORTANT: When upgrading to the appropriate ATD version with the fix, you must
use the migration package. Failure to use the correct migration package causes
installation failures and requires a reimage of the appliance.
Acknowledgments
McAfee credits Jerome Nokin from NCIA for responsibly reporting CVE-2020-7254.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not
For Appliances:
Use the following instructions for Appliance-based products:

 1. Open the Administrator's User Interface (UI).
 2. Click the About link. The product version displays.

Is ATD Update 4.8.2 deployable to all ATD appliance models
ATD Update 4.8.2 is applicable to all ATD models - both physical and virtual.

Will a fix for CVE-2020-7254 be available for ATD versions earlier than 4.8.2
Customers running ATD and virtual ATD versions 4.8.0 or earlier must upgrade to
ATD Update 4.8.2 to obtain the fix for CVE-2020-7254. To remediate against all
vulnerabilities listed in this Security Bulletin, it is recommended to upgrade
to ATD 4.8.2

What are the steps needed to get to a protected version
+----------------+-------------------------+----------------------------------+
|    Starting    |  Total Number of Steps  |                                  |
|    Version     |   to Upgrade to Fixed   |           Upgrade Path           |
|                |         Version         |                                  |
+----------------+-------------------------+----------------------------------+
| 3.6.2          | 5                       | 3.6.2 > 3.8.0 > 4.2.0 > 4.4.0 >  |
|                |                         | 4.8.0                            |
+----------------+-------------------------+----------------------------------+
| 3.8.x          | 4                       | 3.8.x > 4.2.0 > 4.4.0 > 4.8.0    |
+----------------+-------------------------+----------------------------------+
| 4.0.x          | 3                       | 4.0.x > 4.4.0 > 4.8.0            |
+----------------+-------------------------+----------------------------------+
| 4.2.x          | 3                       | 4.2.0 > 4.4.0 > 4.8.0            |
+----------------+-------------------------+----------------------------------+
| 4.4.x          | 2                       | 4.4.x > 4.8.0                    |
+----------------+-------------------------+----------------------------------+
| 4.6.0          | 2                       | 4.6.0 > 4.8.0                    |
+----------------+-------------------------+----------------------------------+
| 4.6.2          | 2                       | 4.6.2 > 4.8.0 > 4.8.2            |
+----------------+-------------------------+----------------------------------+
| 4.8.0          | 1                       | 4.8.0 > 4.8.2                    |
+----------------+-------------------------+----------------------------------+

NOTES:

  o See Supported Upgrade Paths .
  o If you are running ATD version 3.8.x or earlier, McAfee strongly recommends
    a reimage of the ATD appliance directly to version 4.8.0 to minimize the
    number of upgrade steps and avoid potential upgrade failures. See Migration
    Criteria .
  o Installation could take a minimum of 30 minutes and up to two hours. The
    time depends on the number of virtual machines and the database size in the
    deployment.

What are the migration packages recommended by version
+---------+-------------------------------+------------------------------------------------------------------+
| Version |           File name           |                               SHA                                |
+---------+-------------------------------+------------------------------------------------------------------+
| 3.8.0   | system-3.8.0.29.58939.msu     | 3BC121C870AC49FEF57EF406E40055B8867B3150369F013E4395B5555A65FB3C |
+---------+-------------------------------+------------------------------------------------------------------+
| 4.2.x   | migration-4.2.0.20.64069.msu  | 9CF6A0D7DC9CD8CD713F73FFAD3C81C12A1F3CFD0BF82713D79ABB069FEF1AEF |
+---------+-------------------------------+------------------------------------------------------------------+
| 4.4.x   | migration-4.4.0.26.a6835a.msu | 0FF4B2434FD24F13F3D23DBFC8C8E63F7F8B979991A2AC87F61B2362447CCF3B |
+---------+-------------------------------+------------------------------------------------------------------+
| 4.6.0   | migration-4.6.0.21.517580.msu | E9AD833DCCC47626B7AB48B6440CABC1183709A7F0BFE54AD454DF2D993C99D5 |
+---------+-------------------------------+------------------------------------------------------------------+
| 4.6.2   | system-4.6.2.13.8d1e42.msu    | ED4A39A9E16237EF863F7E380799C49946DBACE0ABF1D96225723AB4775F7FAF |
+---------+-------------------------------+------------------------------------------------------------------+
| 4.8.0   | migration-4.8.0.17.c4d13a.msu | 58AF249F1F248B826127ECC861EBE5D50E61501C27376AB5893FE5E5370620A5 |
+---------+-------------------------------+------------------------------------------------------------------+
| 4.8.2   | system-4.8.2.13.cc86f4.msu    | 2E95F1A25D7E5369A7DCA795A840B765D221C188                         |
+---------+-------------------------------+------------------------------------------------------------------+

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-2020-7254 - Privilege escalation in Advanced Threat Defense
+------------------------+--------------------+
|Base Score              |7.7                 |
+------------------------+--------------------+
|Attack Vector (AV)      |Local (L)           |
+------------------------+--------------------+
|Attack Complexity (AC)  |High (H)            |
+------------------------+--------------------+
|Privileges Required (PR)|Low (L)             |
+------------------------+--------------------+
|User Interaction (UI)   |None (N)            |
+------------------------+--------------------+
|Scope (S)               |Changed (C)         |
+------------------------+--------------------+
|Confidentiality (C)     |Low (L)             |
+------------------------+--------------------+
|Integrity (I)           |High (H)            |
+------------------------+--------------------+
|Availability (A)        |High (H)            |
+------------------------+--------------------+
|Temporal Score (Overall)|6.9                 |
+------------------------+--------------------+
|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:H/PR:L/UI:N
/S:C/C:L/I:H/A:H/E:P/RL:O/RC:C&version=3.1

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