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CVE-2021-23881— Stored Cross Site Scripting in 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中存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。

CVSS 4.8 · Medium EPSS 0.64% · P49
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I. Basic Information for CVE-2021-23881

Vulnerability Information
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Vulnerability Title
Stored Cross Site Scripting in ENS
Source: CVE Program / CVE List V5
Vulnerability Description
A stored cross site scripting vulnerability in ePO extension of McAfee Endpoint Security (ENS) prior to 10.7.0 February 2021 Update allows an ENS ePO administrator to add a script to a policy event which will trigger the script to be run through a browser block page when a local non-administrator user triggers the policy.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
迈克菲 McAfee Endpoint Security 跨站脚本漏洞
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中存在跨站脚本漏洞，该漏洞源于WEB应用缺少对客户端数据的正确验证。攻击者可利用该漏洞执行客户端代码。
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-2021-23881

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III. Intelligence Information for CVE-2021-23881

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Other References for CVE-2021-23881 (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-2021-23883 4.0 MEDIUM Null Pointer Dereference vulnerability in McAfee Endpoint Security (ENS)

IV. Related Vulnerabilities

Same product: Endpoint Security (ENS) for Windows
Same vendor: McAfee LLC
Same weakness: CWE-79

V. Comments for CVE-2021-23881

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