CVE Identifier(s): CVE-2017-14090 through 14093
Platform(s): Windows
CVSS 3.0 Score(s): 4.4 - 6.5
Severity Rating(s): Medium
Trend Micro has released a new Critical Patch (CP) for Trend Micro ScanMail for Exchange (SMEX) 12.0. This CP resolves multiple vulnerabilities in the product.
Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| ScanMail for Exchange | Version 12.0 | Windows | English |
Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version | Notes | Platform | Availability |
|---|---|---|---|---|
| ScanMail for Exchange | SMEX 12.0 SP1 Patch 1 CP1755 | Readme | Windows | Now |
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 ScanMail for Exchange (SMEX) 12.0:
1. Some communication to the update servers are not encrypted.
2. Anti Cross-Site Request Forgery (CSRF) protection mechanisms needed to be strengthened on the web interface.
3. Cross-Site Scripting (XSS) vunerabilities in the Logs and Quarantine Query pages could allow attackers in inject client-side scripts into web pages view by other users.
Due to the seriousness of these vulnerabilities, customers are highly encouraged to update to the latest build as soon as possible.
Additional Issue
In addition to the vulnerabilities listed above, another potential issue was identified that apply only to installations that use a very specific and uncommon feature in SMEX 12.0 - the use of "Other Update Source" for organizations that do not or cannot utilize Trend Micro's ActiveUpdate or other regular update solutions (such as Trend Micro Control Manager). An attacker could potentially exploit a vulnerability in this feature to overwrite sensitive files in the SMEX 12.0 directory.
A separate hotfix has been created for this issue (HF B1767), but may interfere with or disable other features which may be more important to the customer. Therefore, only customers who specifically utilize the feature above should consult with Trend Micro technical support to obtain and determine whether or not the hotfix is appropriate for your environment.
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:
- Leandro Barragan and Maximilian Vidal for Core Security Consulting
External Reference(s)
