Advisory Details

November 24th, 2020

Trend Micro ServerProtect ioctlMod Heap-based Buffer Overflow Privilege Escalation Vulnerability

ZDI-20-1378
ZDI-CAN-11064

CVE ID CVE-2020-28575
CVSS SCORE 8.2, (AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
AFFECTED VENDORS Trend Micro
AFFECTED PRODUCTS ServerProtect
VULNERABILITY DETAILS

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

The specific flaw exists within the ioctlMod function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

ADDITIONAL DETAILS Trend Micro has issued an update to correct this vulnerability. More details can be found at:
https://success.trendmicro.com/solution/000281950
DISCLOSURE TIMELINE
  • 2020-07-24 - Vulnerability reported to vendor
  • 2020-11-24 - Coordinated public release of advisory
CREDIT Anonymous
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