# CVE-2017-11391: Command injection in Trend Micro InterScan Messaging Security Virtual Appliance

> Remote attackers can execute arbitrary code on Trend Micro InterScan Messaging Virtual Appliance via command injection in the proxy module.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Aug 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-j9pc-9px3-mp86

## What is CVE-2017-11391?

CVE-2017-11391 is a high-severity command injection vulnerability in Trend Micro InterScan Messaging Security Virtual Appliance, published on 3 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2017-11391?

It affects 1 product.


Products: Trendmicro Interscan Messaging Security Virtual Appliance.

## How do I fix CVE-2017-11391?

No fix has been published for CVE-2017-11391 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-11391 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-11391 exists.

Public exploit code:

- Trend Micro InterScan Messaging Security (Virtual Appliance) Remote Code Execution (metasploit)

## Other vulnerabilities in Trend Micro InterScan Messaging Security Virtual Appliance

- [CVE-2020-27016](https://insights.sbomify.com/CVE-2020-27016/): Cross-site request forgery in Trend Micro InterScan Messaging Security Virtual Appliance (IMSVA) (high 8.8)
- [CVE-2020-27694](https://insights.sbomify.com/CVE-2020-27694/): Other in Trend Micro InterScan Messaging Security Virtual Appliance (IMSVA) (high 8.8)
- [CVE-2017-11392](https://insights.sbomify.com/CVE-2017-11392/): Command injection in Trend Micro InterScan Messaging Security Virtual Appliance (high 8.8)
- [CVE-2017-6398](https://insights.sbomify.com/CVE-2017-6398/): Command injection in n/a (high 8.8)
- [CVE-2018-3609](https://insights.sbomify.com/CVE-2018-3609/): Information disclosure in Trend Micro InterScan Messaging Security Virtual Appliance (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-11391 and fix it if it is affected.

What it is: CVE-2017-11391 is a high-severity command injection vulnerability in Trend Micro InterScan Messaging Security Virtual Appliance, published on 3 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-11391 exists.

Affected product: Trend Micro InterScan Messaging Security Virtual Appliance. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-11391/ (Markdown: https://insights.sbomify.com/CVE-2017-11391/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-11391
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-11391
- OSV: https://osv.dev/vulnerability/CVE-2017-11391

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-11391/
Summaries are generated and may contain mistakes; the official description above is the record.