Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| Apex One | 2019 (On-prem) | Windows | English |
| Apex One as a Service | Versions before January 2023 maintenance | Windows | English |
Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version* | Notes | Platform | Availability |
|---|---|---|---|---|
| Apex One | Service Pack SP1 b11564 (repack) | Readme | Windows | Now Available |
| Apex One as a Service | January 2023 Maintenance Hotfix - Build 202301 Security Agent version: 14.0.11960 | Readme | 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.
* Please note - some of the vulnerabilities may have been technically addressed in earlier patches, but it is highly recommended that customers apply the latest available patch to ensure that all known vulnerabilities and issues are resolved.
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-2023-0587: Server File Upload Vulnerability CVSSv3.1: 8.2: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
A file upload vulnerability in Trend Micro Apex One Server could allow a remote attacker to upload arbitrary files to a specific directory, allowing the attacker to upload a large number of files to fill up the file system on the affected server.
Please note that this was previously disclosed in a previous bulletin (000292183) and is being added here again for reference since the remediation is the same.
CVE-2023-25143: Uncontrolled Search Path Element Local Remote Code Execution Vulnerability
CVSSv3.1: 7.5: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
An uncontrolled search path element vulnerability in the Trend Micro Apex One Server installer could allow an attacker to achieve a remote code execution state on affected products.
CVE-2023-25144: Improper Access Control Local Privilege Escalation Vulnerability
ZDI-CAN-17686
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
An improper access control vulnerability in the Trend Micro Apex One agent could allow a local attacker to gain elevated privileges and create arbitrary directories with arbitrary ownership.
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-2023-25145: Link Following Local Privilege Escalation Vulnerability
ZDI-CAN-18228
CVSSv3: 6.5: AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
A link following vulnerability in the scanning function of Trend Micro Apex One agent could allow a local attacker to escalate 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-2023-25146: Security Agent Link Following Local Privilege Escalation Vulnerability
ZDI-CAN-17819
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
A security agent link following vulnerability in the Trend Micro Apex One agent could allow a local attacker to quarantine a file, delete the original folder and replace with a junction to an arbitrary location, ultimately leading to an arbitrary file dropped to an arbitrary location.
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-2023-25147: Administrator Bypass
CVSSv3: 6.7: AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
An issue in the Trend Micro Apex One agent could allow an attacker who has previously acquired administrative rights via other means to bypass the protection by using a specifically crafted DLL during a specific update process.
Please note: an attacker must first obtain administrative access on the target system via another method in order to exploit this.
CVE-2023-25148: Security Agent Link Following Local Privilege Escalation Vulnerability
ZDI-CAN-18008
CVSSv3:7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
A security agent link following vulnerability in Trend Micro Apex One could allow a local attacker to exploit the vulnerability by changing a specific file into a pseudo-symlink, allowing privilege escalation 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:
- CVE-2023- 0587: Tenable Research
- CVE-2023-25143: DoHyun Lee (@l33d0hyun)
- CVE-2023-25144, 25145 and 25148: Abdelhamid Naceri working with Trend Micro's Zero Day Initiative
- CVE-2023-25146: Lynn and Lays (@_L4ys) working with Trend Micro's Zero Day Initiative
- CVE-2023-25147: Xavier DANEST - Decathlon
External Reference(s)
- Tenable Advisory ID: TRA-2023-5
- ZDI-CAN-17686
- ZDI-CAN-18828
- ZDI-CAN-17819
- ZDI-CAN-18008