Advisory Details

March 17th, 2020

Trend Micro Worry-Free Business Security Directory Traversal Authentication Bypass Vulnerability

ZDI-20-307
ZDI-CAN-10073

CVE ID CVE-2020-8600
CVSS SCORE 8.6, (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
AFFECTED VENDORS Trend Micro
AFFECTED PRODUCTS Worry-Free Business Security
VULNERABILITY DETAILS

This vulnerability allows remote attackers to bypass authentication on affected installations of Trend Micro Worry-Free Business Security. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the TempFileName parameter provided to the cgiRecvFile.exe endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to bypass authentication on the system.

ADDITIONAL DETAILS Trend Micro has issued an update to correct this vulnerability. More details can be found at:
https://success.trendmicro.com/solution/000245572
DISCLOSURE TIMELINE
  • 2020-01-21 - Vulnerability reported to vendor
  • 2020-03-17 - Coordinated public release of advisory
CREDIT Anonymous
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