Trend Micro Worry-Free Business Security Stack-based Buffer Overflow Privilege Escalation Vulnerability

October 19th, 2021
ZDI-21-1221 ZDI-CAN-13857

CVE ID

CVE-2021-42012

CVSS Score

7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Trend Micro

Affected Products

Worry-Free Business Security

Vulnerability Details

This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro Worry-Free Business Security. 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 Trend Micro Security Server Database Service. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

Additional Details

Trend Micro has issued an update to correct this vulnerability. More details can be found at:
https://success.trendmicro.com/solution/000289230

Disclosure Timeline

  • 2021-06-30 - Vulnerability reported to vendor
  • 2021-10-19 - Coordinated public release of advisory

Credit

@Kharosx0

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