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CVE-2021-3485— Improper Input Validation in Bitdefender Endpoint Security Tools for Linux

Quick assessment

Affected
Bitdefender Endpoint Security Tools for Linux
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.

Bitdefender Endpoint Security Tool是罗马尼亚比特梵德（Bitdefender）公司的一款终端安全管理工具。 Linux Bitdefender Endpoint Security Tools 6.2.21.155之前版本的Product Update 存在输入验证错误漏洞，攻击者利用该漏洞可以滥用Product Update的DownloadFile功能来实现远程代码执行。

CVSS 6.4 · Medium EPSS 0.88% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3485

Vulnerability Information
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Vulnerability Title
Improper Input Validation in Bitdefender Endpoint Security Tools for Linux
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Input Validation vulnerability in the Product Update feature of Bitdefender Endpoint Security Tools for Linux allows a man-in-the-middle attacker to abuse the DownloadFile function of the Product Update to achieve remote code execution. This issue affects: Bitdefender Endpoint Security Tools for Linux versions prior to 6.2.21.155.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
Bitdefender Endpoint Security Tool 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bitdefender Endpoint Security Tool是罗马尼亚比特梵德（Bitdefender）公司的一款终端安全管理工具。 Linux Bitdefender Endpoint Security Tools 6.2.21.155之前版本的Product Update 存在输入验证错误漏洞，攻击者利用该漏洞可以滥用Product Update的DownloadFile功能来实现远程代码执行。
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
Bitdefender Endpoint Security Tools for Linux unspecified ~ 6.2.21.155 -

II. Public POCs for CVE-2021-3485

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III. Intelligence Information for CVE-2021-3485

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Other References for CVE-2021-3485 (2)

IV. Related Vulnerabilities

Same product: Endpoint Security Tools for Linux
Same vendor: Bitdefender
Same weakness: CWE-494

V. Comments for CVE-2021-3485

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