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CVE-2021-31840— DLL preload vulnerability in McAfee Agent for Windows

Quick assessment

Affected
McAfee,LLC McAfee Agent 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 Agent（MA）是美国迈克菲（Mcafee）公司的一套提供了ePolicy Orchestrator（杀毒软件管理平台）与被管理产品之间的安全通信的客户端组件。 McAfee Agent 5.7.3之前版本中存在安全漏洞。该漏洞源于特定动态链接库的预加载机制，可能允许经过身份验证的本地攻击者使用无签名DLL执行DLL预加载攻击。

CVSS 7.3 · High EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1574.001 · DLL
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I. Basic Information for CVE-2021-31840

Vulnerability Information
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Vulnerability Title
DLL preload vulnerability in McAfee Agent for Windows
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the preloading mechanism of specific dynamic link libraries in McAfee Agent for Windows prior to 5.7.3 could allow an authenticated, local attacker to perform a DLL preloading attack with unsigned DLLs. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. This would result in the user gaining elevated permissions and being able to execute arbitrary code.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
Vulnerability Title
McAfee Agent代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mcafee McAfee Agent（MA）是美国迈克菲（Mcafee）公司的一套提供了ePolicy Orchestrator（杀毒软件管理平台）与被管理产品之间的安全通信的客户端组件。 McAfee Agent 5.7.3之前版本中存在安全漏洞。该漏洞源于特定动态链接库的预加载机制，可能允许经过身份验证的本地攻击者使用无签名DLL执行DLL预加载攻击。
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 Agent for Windows unspecified ~ 5.7.3 -

II. Public POCs for CVE-2021-31840

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III. Intelligence Information for CVE-2021-31840

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Other References for CVE-2021-31840 (1)

IV. Related Vulnerabilities

Same product: McAfee Agent for Windows
Same vendor: McAfee,LLC
Same weakness: CWE-427

V. Comments for CVE-2021-31840

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