Advisory Details

December 3rd, 2021

Bitdefender GravityZone Unnecessary Privileges Local Privilege Escalation Vulnerability

ZDI-21-1376
ZDI-CAN-14377

CVE ID CVE-2021-3576
CVSS SCORE 7.0, AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Bitdefender
AFFECTED PRODUCTS GravityZone
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Bitdefender GravityZone. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the endpoint client. The issue results from allowing an untrusted process to impersonate the client of a pipe. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

ADDITIONAL DETAILS Bitdefender has issued an update to correct this vulnerability. More details can be found at:
https://www.bitdefender.com/support/security-advisories/privilege-escalation-via-seimpersonateprivilege-in-bitdefender-endpoint-security-tools-va-9848/
DISCLOSURE TIMELINE
  • 2021-06-25 - Vulnerability reported to vendor
  • 2021-12-03 - Coordinated public release of advisory
CREDIT Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative
BACK TO ADVISORIES