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CVE-2021-31842

Quick assessment

Affected
McAfee,LLC McAfee Endpoint Security (ENS) for WIndows
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mcafee McAfee Endpoint Security（ENS）是美国迈克菲（Mcafee）公司的一套提供智能协作和先进的威胁防御的框架。该框架支持对实时通信的整个威胁防御生命周期进行控制并进行可操作的威胁取证等。 McAfee Endpoint Security 存在代码问题漏洞，该漏洞源于McAfee端点安全(ENS)的XML实体扩展存在注入漏洞。攻击者可利用该漏洞允许本地用户通过仔细编辑EPDeploy.xml文件，然后执行安装过程，启动高CPU和内存消耗，导致拒绝服务攻击。

CVSS 5.0 · Medium EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-31842

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
DTD中递归实体索引的不恰当限制(XML实体扩展)
Source: CVE Program / CVE List V5
Vulnerability Title
McAfee Endpoint Security 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mcafee McAfee Endpoint Security（ENS）是美国迈克菲（Mcafee）公司的一套提供智能协作和先进的威胁防御的框架。该框架支持对实时通信的整个威胁防御生命周期进行控制并进行可操作的威胁取证等。 McAfee Endpoint Security 存在代码问题漏洞，该漏洞源于McAfee端点安全(ENS)的XML实体扩展存在注入漏洞。攻击者可利用该漏洞允许本地用户通过仔细编辑EPDeploy.xml文件，然后执行安装过程，启动高CPU和内存消耗，导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
McAfee,LLC McAfee Endpoint Security (ENS) for WIndows unspecified ~ 10.7.0 September 2021 Update -

II. Public POCs for CVE-2021-31842

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III. Intelligence Information for CVE-2021-31842

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Other References for CVE-2021-31842 (1)

Same Patch Batch · McAfee,LLC · 2021-09-17 · 4 CVEs total

CVE-2021-31845 8.4 HIGH Remote Code Execution in McAfee DLP Discover
CVE-2021-31844 8.2 HIGH Local Privilege Escalation in McAfee DLP Endpoint for Windows
CVE-2021-31843 7.3 HIGH Improper access control vulnerability in McAfee ENS for Windows

IV. Related Vulnerabilities

Same product: McAfee Endpoint Security (ENS) for WIndows
Same vendor: McAfee,LLC
Same weakness: CWE-776

V. Comments for CVE-2021-31842

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