Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| Apex One | 2019 (On-prem) | Windows | English |
| Apex One as a Service | Versions before May 2023 Maintenance | Windows | English |
Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version | Notes | Platform | Availability |
|---|---|---|---|---|
| Apex One | SP1 CP B12033 | Readme | Windows | Now Available |
| Apex One as a Service | May 2023 Maintenance Hotfix - Build 202305 Security Agent version: 14.0.12518 | Notes | Windows | Now Available |
These are the minimum recommended version(s) of the patches and/or builds required to address the issue. Trend Micro highly encourages customers to obtain the latest version of the product if there is a newer one available than the one listed in this bulletin.
Customers are encouraged to visit Trend Micro’s Download Center to obtain prerequisite software (such as Service Packs) before applying any of the solutions above.
Vulnerability Details
CVE-2023-34144 and 34145: Security Agent Untrusted Search Path Local Privilege Escalation Vulnerabilities ZDI-CAN-19680 and ZDI-CAN-19681
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Untrusted search path vulnerabilities in the Trend Micro Apex One and Apex One as a Service security agent could allow a local attacker to escalate their privileges on affected installations.
Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
CVE-2023-34146, 34147 and 34148: Security Agent Exposed Dangerous Function Local Privilege Escalation Vulnerabilities
ZDI-CAN-19188, ZDI-CAN-19191 and ZDI-CAN-19192
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exposed dangerous function vulnerabilities in the Trend Micro Apex One and Apex One as a Service security agent could allow a local attacker to escalate privileges and write an arbitrary value to specific Trend Micro agent subkeys on affected installations.
Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
Mitigating Factors
Exploiting these type of vulnerabilities generally require that an attacker has access (physical or remote) to a vulnerable machine. In addition to timely application of patches and updated solutions, customers are also advised to review remote access to critical systems and ensure policies and perimeter security is up-to-date.
However, even though an exploit may require several specific conditions to be met, Trend Micro strongly encourages customers to update to the latest builds as soon as possible.
Acknowledgement
Trend Micro would like to thank the following individuals for responsibly disclosing these issues and working with Trend Micro to help protect our customers:
- Lynn and Lays (@_L4ys) working with Trend Micro's Zero Day Initiative
External Reference(s)
- ZDI-CAN-19680
- ZDI-CAN-19681
- ZDI-CAN-19188
- ZDI-CAN-19191
- ZDI-CAN-19192