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CVE-2021-3576— Privilege escalation via SeImpersonatePrivilege

Quick assessment

Affected
Bitdefender Endpoint Security Tools
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.

K7 Computing Total Security是美国K7 Computing公司的一套适用于Windows平台的防病毒软件。 Total Security存在安全漏洞，该漏洞源于在Bitdefender端点安全工具中执行不必要的特权漏洞，Total Security允许本地攻击者可利用该漏洞提升到“NT AUTHORITYSystem”。模拟使服务器线程能够代表客户机执行操作，但要在客户机的安全上下文中进行限制。此问题影响:Bitdefender端点安全工具7.2.1.65之前的版本。比特防御总安

CVSS 7.8 · High EPSS 0.96% · P60

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-3576

Vulnerability Information
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Vulnerability Title
Privilege escalation via SeImpersonatePrivilege
Source: CVE Program / CVE List V5
Vulnerability Description
Execution with Unnecessary Privileges vulnerability in Bitdefender Endpoint Security Tools, Total Security allows a local attacker to elevate to 'NT AUTHORITY\System. Impersonation enables the server thread to perform actions on behalf of the client but within the limits of the client's security context. This issue affects: Bitdefender Endpoint Security Tools versions prior to 7.2.1.65. Bitdefender Total Security versions prior to 25.0.26.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
带着不必要的权限执行
Source: CVE Program / CVE List V5
Vulnerability Title
Total Security 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
K7 Computing Total Security是美国K7 Computing公司的一套适用于Windows平台的防病毒软件。 Total Security存在安全漏洞，该漏洞源于在Bitdefender端点安全工具中执行不必要的特权漏洞，Total Security允许本地攻击者可利用该漏洞提升到“NT AUTHORITYSystem”。模拟使服务器线程能够代表客户机执行操作，但要在客户机的安全上下文中进行限制。此问题影响:Bitdefender端点安全工具7.2.1.65之前的版本。比特防御总安
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 unspecified ~ 7.2.1.65 -
Bitdefender Total Security unspecified ~ 25.0.26 -

II. Public POCs for CVE-2021-3576

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III. Intelligence Information for CVE-2021-3576

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Vendor Advisories for CVE-2021-3576 (2)

Other References for CVE-2021-3576 (1)

Same Patch Batch · Bitdefender · 2021-10-28 · 3 CVEs total

CVE-2021-3579 7.8 HIGH Incorrect Default Permissions vulnerability in bdservicehost.exe and Vulnerability.Scan.ex
CVE-2021-3823 7.1 HIGH Path traversal vulnerability in Bitdefender GravitZone Update Server in relay mode

IV. Related Vulnerabilities

Same product: Endpoint Security Tools
Same vendor: Bitdefender
Same weakness: CWE-250

V. Comments for CVE-2021-3576

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