A link following vulnerability in the scanning function of Trend Micro Apex One and Worry-Free Business Security agents could allow a local attacker to escalate privileges on affected installations. The resolution for this issue has been deployed automatically via ActiveUpdate to customers in an updated Spyware pattern. Customers who are up-to-date on detection patterns are not required to take any additional steps to mitigate this issue.
Weakness
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Apex_one | Trendmicro | - (including) | - (including) |
| Apex_one | Trendmicro | 2019 (including) | 2019 (including) |
| Worry-free_business_security | Trendmicro | 10.0-sp1 (including) | 10.0-sp1 (including) |
| Worry-free_business_security_services | Trendmicro | - (including) | - (including) |
Potential Mitigations
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/132.html
- https://cwe.mitre.org/data/definitions/17.html
- https://cwe.mitre.org/data/definitions/35.html
- https://cwe.mitre.org/data/definitions/76.html