CVE Identifier(s): CVE-2020-24563 through 24565; CVE-2020-25770 through CVE-2020-25774; CVE-2020-28572, CVE-2020-28573, CVE-2020-28576, CVE-2020-28577, CVE-2020-28582, CVE-2020-28583
Platform(s): Windows
CVSS 3.0 Score(s): 3.3 - 7.8
Severity Rating(s): Low - High
Trend Micro has released a new Critical Patch (CP) for Trend Micro OfficeScan XG SP1. This CP resolves multiple vulnerabilities related to out-of-bounds read information disclosure, authentication bypass, local privilege escalation, improper access control information disclosure and issues with a server migration tool component.
Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| OfficeScan | XG SP1 | Windows | English |
Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version | Notes | Platform | Availability |
|---|---|---|---|---|
| OfficeScan | XG SP1 CP5702 * | Readme | Windows | Now Available |
*Please note that some of the vulnerabilities were actually included in a previous CP (5698); however, there were some unrelated customer reported issues with this CP and it is highly suggested that customers obtain the latest CP that resolves those issues.
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: 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 OfficeScan XG SP1 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: 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 OfficeScan XG SP1 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: 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 OfficeScan XG SP1 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: 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 OfficeScan XG SP1 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.
CVE-2020-28572: Local Privilege Escalation Vulnerability
CVSSv3: 5.7: AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
A vulnerability in Trend Micro OfficeScan XG SP1 could allow an unprivileged user to abuse the product installer to reinstall the agent with additional malicious code in the context of a higher privilege.
CVE-2020-28573, CVE-2020-28576, CVE-2020-28577, CVE-2020-28582, CVE-2020-28583: Improper Access Control Information Disclosure Vulnerabilities
CVSSv3: 5.3: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Improper access control information disclosure vulnerabilities in Trend Micro OfficeScan XG SP1 could allow an unauthenticated user to connect to the product server and reveal information such as the total agents managed by the server, version/build information and server hostname.
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
- Lasse Trolle Borup of Danish Cyber Defence
- filenotfound working with Trend Micro's Zero Day Initiative
- Elias Martinez working with 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
- ZDI-20-1374
- ZDI-20-1375
- ZDI-20-1376
- ZDI-20-1386
- ZDI-20-1387
