# CVE-2020-8461: Cross-site request forgery in Trend Micro InterScan Web Security Virtual Appliance

> Attackers can bypass CSRF protections to force victims to send unauthorized requests to the Trend Micro InterScan Web Security Virtual Appliance.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-784w-4q35-257w

## What is CVE-2020-8461?

CVE-2020-8461 is a high-severity vulnerability in Trend Micro InterScan Web Security Virtual Appliance, published on 17 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A CSRF protection bypass vulnerability in Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2 could allow an attacker to get a victim's browser to send a specifically encoded request without requiring a valid CSRF token.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2020-8461?

It affects 1 product.


Products: Trendmicro Interscan Web Security Virtual Appliance.

## How do I fix CVE-2020-8461?

No fix has been published for CVE-2020-8461 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8461 being exploited?

There is no known exploitation of CVE-2020-8461 in the wild and no public exploit code.

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

- [CVE-2016-9269](https://insights.sbomify.com/CVE-2016-9269/): Command injection in n/a (critical 9.9)
- [CVE-2020-8465](https://insights.sbomify.com/CVE-2020-8465/): Auth bypass in Trend Micro InterScan Web Security Virtual Appliance (critical 9.8)
- [CVE-2020-8466](https://insights.sbomify.com/CVE-2020-8466/): Command injection in Trend Micro InterScan Web Security Virtual Appliance (critical 9.8)
- [CVE-2020-28578](https://insights.sbomify.com/CVE-2020-28578/): Memory corruption in Trend Micro InterScan Web Security Virtual Appliance (critical 9.8)
- [CVE-2020-8606](https://insights.sbomify.com/CVE-2020-8606/): Auth bypass in Trend Micro InterScan Web Security Virtual Appliance (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8461 and fix it if it is affected.

What it is: CVE-2020-8461 is a high-severity vulnerability in Trend Micro InterScan Web Security Virtual Appliance, published on 17 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-8461 in the wild and no public exploit code.

Affected product: Trend Micro InterScan Web 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-2020-8461/ (Markdown: https://insights.sbomify.com/CVE-2020-8461/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8461
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8461
- OSV: https://osv.dev/vulnerability/CVE-2020-8461

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8461/
Summaries are generated and may contain mistakes; the official description above is the record.