CVE-2020-7261— Buffer overwrite in ENS allowed to bypass AMSI protection
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I. Basic Information for CVE-2020-7261
Vulnerability Information
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Vulnerability Title
Buffer overwrite in ENS allowed to bypass AMSI protection
Source: NVD (National Vulnerability Database)
Vulnerability Description
Buffer Overflow via Environment Variables vulnerability in AMSI component in McAfee Endpoint Security (ENS) Prior to 10.7.0 February 2020 Update allows local users to disable Endpoint Security via a carefully crafted user input.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
McAfee Endpoint Security 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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 ENS 10.7.0之前版本中的AMSI组件存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
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) | 10.x ~ 10.7.0 April 2020 Update | - |
II. Public POCs for CVE-2020-7261
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://kc.mcafee.com/corporate/index?page=content&id=SB10309x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2020-7261
Same Patch Batch · McAfee LLC · 2020-04-15 · 11 CVEs total
| CVE-2020-7257 | 8.4 HIGH | Privilege Escalation vulnerability through Symbolic links in ENS |
| CVE-2020-7250 | 8.2 HIGH | ENS symbolic link log file manipulation vulnerability |
| CVE-2020-7278 | 7.4 HIGH | McAfee firewall rules not enforced correctly |
| CVE-2020-7277 | 6.8 MEDIUM | McAfee processes not protected |
| CVE-2020-7273 | 6.7 MEDIUM | Autorun registry bypass |
| CVE-2020-7259 | 6.6 MEDIUM | Unsigned executable vulnerability in ENS can be used to bypass intended self-protection ru |
| CVE-2020-7274 | 6.6 MEDIUM | ENS elevated permissions vulnerability |
| CVE-2020-7276 | 6.4 MEDIUM | Unrestricted Policy Management using MfeUpgradeTool.exe |
| CVE-2020-7275 | 4.8 MEDIUM | Unquoted service paths for some McAfee ENS files |
| CVE-2020-7255 | 3.9 LOW | Privilege Escalation vulnerability in ENS |
IV. Related Vulnerabilities
Same product: McAfee Endpoint Security (ENS)
- CVE-2020-7331
Unquoted service executable path in McAfee Endpoint Security - CVE-2020-7255
Privilege Escalation vulnerability in ENS - CVE-2020-7250
ENS symbolic link log file manipulation vulnerability - CVE-2020-7257
Privilege Escalation vulnerability through Symbolic links in - CVE-2020-7259
Unsigned executable vulnerability in ENS can be used to bypa
Same vendor: McAfee LLC
- CVE-2021-23881
Stored Cross Site Scripting in ENS - CVE-2021-23883
Null Pointer Dereference vulnerability in McAfee Endpoint Se - CVE-2021-23882
Improper Access Control in the ENS installer - CVE-2021-23880
Improper Access Control in the ENS installer - CVE-2021-23878
Clear text storage of sensitive Information in ENS
Same weakness: CWE-119
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Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code - CVE-2026-34988
Wasmtime leaks data between pooling allocator instances
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