CVE-2018-3609

Interscan Messaging Security Virtual Appliance vulnerability

CVSS

8.1

EPSS

21.8%

EPSS pct

97th

Exploited

No known

A vulnerability in the Trend Micro InterScan Messaging Security Virtual Appliance 9.0 and 9.1 management portal could allow an unauthenticated user to access sensitive information in a particular log file that could be used to bypass authentication on vulnerable installations.

Affected vendor

Trendmicro

Affected product

Interscan Messaging Security Virtual Appliance

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-522 — Insufficiently Protected Credentials
CWE-532 — Insertion of Sensitive Information into Log File

Published

2018-02-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 21.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2018-3609

Confirm whether Trendmicro Interscan Messaging Security Virtual Appliance is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-3609.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-3609

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-3609 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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