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             AUSCERT External Security Bulletin Redistribution

           McAfee Agent update fixes an improper access control
                  vulnerability (CVE-2020-7253) (SB10312)
                               12 March 2020


        AusCERT Security Bulletin Summary

Product:           McAfee Agent
Publisher:         McAfee
Operating System:  Windows
Impact/Access:     Reduced Security -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-7253  

Original Bulletin: 

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McAfee Security Bulletin - McAfee Agent update fixes an improper access control
vulnerability (CVE-2020-7253)

Security Bulletins ID   : SB10312
Last Modified           : 3/10/2020


First Published: March 10, 2020
|Impact of Vulnerability:     |Improper Access Control (CWE-284)              |
|CVE ID:                      |CVE-2020-7253                                  |
|Severity Rating:             |Medium                                         |
|CVSS v3 Base/Temporal Scores:|5.7 / 5.1                                      |
|Recommendations:             |Install or update to McAfee Agent 5.5.4 or     |
|                             |5.6.4                                          |
|Security Bulletin            |None                                           |
|Replacement:                 |                                               |
|                             |McAfee Agent:                                  |
|Affected Software:           |                                               |
|                             |  o 5.6.x prior to 5.6.4                       |
|                             |  o 5.5.x prior to 5.5.4                       |
|Location of updated software:|http://www.mcafee.com/us/downloads/            |
|                             |downloads.aspx                                 |

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Article contents:

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

Vulnerability Description
Improper access control vulnerability in masvc.exe in McAfee Agent (MA) prior
to 5.6.4 allows local users with administrator privileges to disable
self-protection via a McAfee supplied command-line utility.
To remediate this issue:

  o Users of any McAfee Agent 5.6.x version should upgrade to McAfee Agent
  o Users of any McAfee Agent 5.5.0 and 5.5.1 versions should upgrade to McAfee
    Agent 5.5.4 or 5.6.4.

To remediate this issue, go to the Product Downloads site, and download the
applicable product update file:
|Product     |Version|Type  |File Name   |Release Date  |
|McAfee Agent|5.6.4  |Update|MAWIN564.zip|March 10, 2020|
|McAfee Agent|5.5.4  |Update|MAWIN554.zip|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.
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.

For McAfee Agent (command line):
Use the following instructions for endpoint or client-based products:

 1. Open the terminal.
 2. Enter the following command: C:\Program Files\McAfee\Agent\cmdagent -i

The product version displays in the output.

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-2020-7253 - Improper access control vulnerability in McAfee Agent
|Base Score              |5.7                 |
|Attack Vector (AV)      |Local (L)           |
|Attack Complexity (AC)  |High (H)            |
|Privileges Required (PR)|High (H)            |
|User Interaction (UI)   |None (N)            |
|Scope (S)               |Unchanged (U)       |
|Confidentiality (C)     |None (N)            |
|Integrity (I)           |High (H)            |
|Availability (A)        |High (H)            |
|Temporal Score (Overall)|5.1                 |
|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.

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