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CVE-2021-23883— Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS)

Quick assessment

Affected
McAfee LLC 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中存在代码问题漏洞，该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。

CVSS 4.0 · Medium EPSS 0.27% · P19

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2021-23883

Vulnerability Information
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Vulnerability Title
Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS)
Source: CVE Program / CVE List V5
Vulnerability Description
A Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2021 Update allows a local administrator to cause Windows to crash via a specific system call which is not handled correctly. This varies by machine and had partial protection prior to this update.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
迈克菲 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中存在代码问题漏洞，该漏洞源于网络系统或产品的代码开发过程中存在设计或实现不当的问题。
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 Endpoint Security (ENS) for Windows 10.7.x ~ 10.7.0 February 2021 -

II. Public POCs for CVE-2021-23883

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III. Intelligence Information for CVE-2021-23883

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Other References for CVE-2021-23883 (1)

Same Patch Batch · McAfee LLC · 2021-02-10 · 5 CVEs total

CVE-2021-23882 8.2 HIGH Improper Access Control in the ENS installer
CVE-2021-23878 7.3 HIGH Clear text storage of sensitive Information in ENS
CVE-2021-23880 6.7 MEDIUM Improper Access Control in the ENS installer
CVE-2021-23881 4.8 MEDIUM Stored Cross Site Scripting in ENS

IV. Related Vulnerabilities

Same product: Endpoint Security (ENS) for Windows
Same vendor: McAfee LLC
Same weakness: CWE-476

V. Comments for CVE-2021-23883

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