Affected Version(s)

Solution

Trend Micro has released the following solutions to address the issue:

* Please note that these CPs also enable Windows 10 April 2018 Update (RS4) compatibility. Admistrators are strongly recommended to review KB1119990 for a special note on a known (but rare) issue, and KB1119685 for more information on general RS4 compatibility.

This is the minimum version(s) of the patch and/or build 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

This update resolves multiple vulnerabilities in Trend Micro OfficeScan:

1. CVE-2018-10358, 10359, 10505:  OfficeScan tmwfp Driver Pool Corruption Privilege Escalation vulnerabilities
2. CVE-2018-10506: OfficeScan tmwfp Driver Out-Of-Bounds Read Information Disclosure vulnerability
3. CVE-2018-10507:  OfficeScan "Unauthorized Change Prevention" Bypass vulnerability (requires Admin permissions to exploit)
4. CVE-2018-10508:  OfficeScan Privilege Escalation via URL vulnerability
5. CVE-2018-10509:  OfficeScan Browser Refresh vulnerability

Due to the seriousness of these or any vulnerabilities, customers are highly encouraged to update to the latest build as soon as possible.

Mitigating Factors

Exploiting these types 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:

• Anonymous working with Trend Micro's Zero Day Initiative
• John Page (aka hyp3rlinx)
• Rajath Magadi

External Reference(s)