An untrusted search path remote code execution (RCE) vulnerability in the Trend Micro Secuity 2020 (v16.0.0.1146 and below) consumer family of products could allow an attacker to run arbitrary code on a vulnerable system. As the Trend Micro installer tries to load DLL files from its current directory, an arbitrary DLL could also be loaded with the same privileges as the installer if run as Administrator. User interaction is required to exploit the vulnerbaility in that the target must open a malicious directory or device.
The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product’s direct control.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Antivirus+_2020 | Trendmicro | * | 16.0.1146 (including) |
| Internet_security_2020 | Trendmicro | * | 16.0.1146 (including) |
| Maximum_security_2020 | Trendmicro | * | 16.0.1146 (including) |
| Premium_security_2020 | Trendmicro | * | 16.0.1146 (including) |
This might allow attackers to execute their own programs, access unauthorized data files, or modify configuration in unexpected ways. If the product uses a search path to locate critical resources such as programs, then an attacker could modify that search path to point to a malicious program, which the targeted product would then execute. The problem extends to any type of critical resource that the product trusts. Some of the most common variants of untrusted search path are: