#VU58518 Permissions, Privileges, and Access Controls in Endpoint Security Tools and Bitdefender Total Security - CVE-2021-3576

Vulnerability identifier: #VU58518

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3576

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Endpoint Security Tools
Client/Desktop applications / Antivirus software/Personal firewalls
Bitdefender Total Security
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Bitdefender

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions within the "SeImpersonatePrivilege", which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Endpoint Security Tools: before 7.2.1.65

Bitdefender Total Security: before 25.0.26

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External links
https://www.bitdefender.com/support/security-advisories/privilege-escalation-via-seimpersonateprivilege-in-bitdefender-endpoint-security-tools-va-9848/
https://www.zerodayinitiative.com/advisories/ZDI-21-1276/
https://www.zerodayinitiative.com/advisories/ZDI-21-1376/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.