Vulnerability Monitor

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CVE-2017-11391

Proxy command injection vulnerability in Trend Micro InterScan Messaging Virtual Appliance 9.0 and 9.1 allows remote attackers to execute arbitrary code on vulnerable installations. The specific flaw can be exploited by parsing the "t" parameter within modTMCSS Proxy. Formerly ZDI-CAN-4744.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from trendmicro organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2017-08-03T15:29:00.327

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 8.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-77

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	trendmicro	interscan_messaging_security_virtual_appliance	9.0	Yes
Application	trendmicro	interscan_messaging_security_virtual_appliance	9.1	Yes

References

http://www.securityfocus.com/bid/100075 Third Party Advisory, VDB Entry ([email protected])
http://www.zerodayinitiative.com/advisories/ZDI-17-502 Third Party Advisory, VDB Entry ([email protected])
https://success.trendmicro.com/solution/1117723 Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/100075 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.zerodayinitiative.com/advisories/ZDI-17-502 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://success.trendmicro.com/solution/1117723 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For trendmicro's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.