5.5
MEDIUM
CVE-2021-31842
McAfee Endpoint Security XML Entity Expansion Denial of Service
Description

XML Entity Expansion injection vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 September 2021 Update allows a local user to initiate high CPU and memory consumption resulting in a Denial of Service attack through carefully editing the EPDeploy.xml file and then executing the setup process.

INFO

Published Date :

Sept. 17, 2021, 2:15 p.m.

Last Modified :

Nov. 7, 2023, 3:35 a.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-31842 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mcafee endpoint_security
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-31842.

URL Resource
https://kc.mcafee.com/corporate/index?page=content&id=SB10367

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-31842 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-31842 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Trellix https://kc.mcafee.com/corporate/index?page=content&id=SB10367 [No types assigned]
    Removed Reference McAfee (DEFUNCT) https://kc.mcafee.com/corporate/index?page=content&id=SB10367
    Added CWE Trellix CWE-776
    Removed CWE McAfee (DEFUNCT) CWE-776
    Removed CVSS V3.1 McAfee (DEFUNCT) AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
    Added CVSS V3.1 Trellix AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
  • CVE Source Update by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source McAfee (DEFUNCT) Trellix
  • Modified Analysis by [email protected]

    May. 10, 2022

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 27, 2022

    Action Type Old Value New Value
    Removed CWE McAfee CWE-611
    Added CWE McAfee CWE-776
    Removed CWE Reason CWE-611 / More specific CWE option available
  • Reanalysis by [email protected]

    Apr. 25, 2022

    Action Type Old Value New Value
    Added CWE NIST CWE-776
  • Initial Analysis by [email protected]

    Sep. 30, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://kc.mcafee.com/corporate/index?page=content&id=SB10367 No Types Assigned https://kc.mcafee.com/corporate/index?page=content&id=SB10367 Patch, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:mcafee:endpoint_security:*:*:*:*:*:windows:*:* versions up to (excluding) 10.7.0 *cpe:2.3:a:mcafee:endpoint_security:10.7.0:april_2020:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:april_2021:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:february_2020:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:february_2021:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:july_2020:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:june_2021:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:november_2020:*:*:*:windows:*:* *cpe:2.3:a:mcafee:endpoint_security:10.7.0:september_2020:*:*:*:windows:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-31842 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-31842 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability