Advisory Details

September 25th, 2020

Trend Micro OfficeScan Hard Link Privilege Escalation Vulnerability

ZDI-20-1226
ZDI-CAN-10794

CVE ID CVE-2020-24562
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 OfficeScan
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro OfficeScan. 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 OfficeScan Security Agent. By creating a hard link, an attacker can abuse the service to overwrite the contents of a chosen file. An attacker can leverage this vulnerability to escalate privileges and execute code as an administrator.

ADDITIONAL DETAILS Trend Micro has issued an update to correct this vulnerability. More details can be found at:
https://success.trendmicro.com/solution/000263633
DISCLOSURE TIMELINE
  • 2020-05-29 - Vulnerability reported to vendor
  • 2020-09-25 - Coordinated public release of advisory
CREDIT Tran Van Khang - khangkito of VinCSS (Member of Vingroup)
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