Privilege escalation in Bitdefender Endpoint Security Tools and Total Security

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58518

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3576

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

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

External links

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

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.