CVE Identifier(s): CVE-2020-24563 through 24565; CVE-2020-25770 through CVE-2020-25774
Platform(s): Windows
CVSS 3.0 Score(s): 3.3 - 7.8
Severity Rating(s): Low - High
Trend Micro has released new patches for Trend Micro Apex One and Apex One as a Service (SaaS). These patches resolve multiple vulnerabilities related to out-of-bounds read information disclosure, authentication bypass, and issues with a server migration tool component.
Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| Apex One | On Premise (2019) | Windows | English |
| SaaS | Windows | English |
Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version | Notes | Platform | Availability |
|---|---|---|---|---|
| Apex One (on prem) | CP 8400 | Readme Important Note * | Windows | Now Available |
| Apex One (SaaS) | Sept 2020 Monthly Patch (2009) | Readme | Windows | Now Available |
*Please read the important known issues note about CP8400 before downloading.
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-2020-24563: Trend Micro Apex One Authentication Bypass Vulnerability
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
A vulnerability in Trend Micro Apex One may allow a local attacker to manipulate the process of the security agent unload option (if configured), which then could be manipulated to gain a privilege escalation and code execution.
An attacker must first obtain the ability to execute low-privileged code on the target in order to exploit this vulnerability.
CVE-2020-24564, CVE-2020-24565, CVE-2020-25770, CVE-2020-25771, CVE-2020-25772: Trend Micro Apex One Out-of-Bounds Read Information Disclosure Vulnerabilities
CVSSv3: 5.6: AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H/E:P/CR:L/IR:L/AR:L
Several out-of-bounds read information disclosure vulnerabilities in Trend Micro Apex One may allow a local attacker to disclose sensitive information to an unprivileged account on vulnerable installations of the product.
An attacker must first obtain the ability to execute low-privileged code on the target in order to exploit these vulnerabilities.
CVE-2020-25773: Trend Micro Apex One ServerMigrationTool DAT File Parsing Double Free Remote Code Execution Vulnerability
CVSSv3: 7.8: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
A vulnerability in the Trend Micro Apex One ServerMigrationTool component could allow an attacker to execute arbitrary code on affected products.
User interaction is required to exploit this vulnerability in that the target must import a corrupted configuration file.
CVE-2020-25774: Trend Micro Apex One ServerMigrationTool ZIP File Parsing Out-of-Bounds Read Information Disclosure Vulnerability
CVSSv3: 3.3: AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
A vulnerability in the Trend Micro Apex One ServerMigrationTool component could allow an attacker to trigger an out-of-bounds red information disclosure which would disclose sensitive information to an unprivileged account.
User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
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.
Newer versions of the operating system (e.g. Windows 10) may protect against some vulnerabilities such as hard link privilege escalations.
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
- Lynn and Jay Lo working with Trend Micro's Zero Day Initiative
- Jaehun Jeong (@n3sk) of Theori working with Trend Micro's Zero Day Initiative
- Michael DePlante of Trend Micro's Zero Day Initiative
External Reference(s)
- ZDI-20-1218
- ZDI-20-1219
- ZDI-20-1220
- ZDI-20-1221
- ZDI-20-1222
- ZDI-20-1223
- ZDI-20-1224
- ZDI-20-1225
