Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| Apex One | 2019 (On-prem) SaaS | Windows Windows | English English |
Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version | Notes | Platform | Availability | |
|---|---|---|---|---|---|
| Apex One (on-prem) | CP 9601 |
| Windows | Now Available | |
| Apex One as a Service (SaaS) | July 2021 Monthly Patch | 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.
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-2021-32464: Incorrect Permission Assignment Privilege VulnerabilityCVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
An incorrect permission assignment privilege escalation vulnerability in Trend Micro Apex One and Apex One as a Service could allow an attacker to modify a specific script before it is executed.
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-2021-32465: Incorrect Permission Preservation Authentication Bypass Vulnerability
CVSSv3: 7.5: AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
An incorrect permission preservation vulnerability in Trend Micro Apex One and Apex One as a Service could allow a remote user to perform an attack and bypass authentication 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-2021-36741: Arbitrary File Upload Vulnerability
CVSSv3: 7.1: AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
An improper input validation vulnerability in Trend Micro Apex One and Apex One as a Service allows a remote attached to upload arbitrary files on affected installations.
Please note: an attacker must first obtain the ability to logon to the product’s management console in order to exploit this vulnerability.
CVE-2021-36742: Local Privilege Escalation Vulnerability
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
A improper input validation vulnerability in Trend Micro Apex One and Apex One as a Service allows 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.
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:
- Kharosx0 working with Trend Micro's Zero Day Initiative (CVE-2021-32464)
- HexKitchen working with Trend Micro's Zero Day Initiative (CVE-2021-32465)
- Trend Micro Research (CVE-2021-36741, CVE-2021-36742)
External Reference(s)
- ZDI-CAN-12851
- ZDI-CAN-13769