# CVE-2002-0440: Security feature bypass in n/a

> Attackers can bypass virus scanning in Trend Micro InterScan VirusWall by sending a zero-length Content-Length header when a specific option is enabled.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jun 2002
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-87c4-g3xj-g65r

## What is CVE-2002-0440?

CVE-2002-0440 is a high-severity vulnerability in n/a, published on 11 Jun 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Trend Micro InterScan VirusWall HTTP proxy 3.6 with the "Skip scanning if Content-length equals 0" option enabled allows malicious web servers to bypass content scanning via a Content-length header set to 0, which is often ignored by HTTP clients.

## Which versions are affected by CVE-2002-0440?

It affects 1 product.


Products: Trend Micro Interscan Viruswall.

## How do I fix CVE-2002-0440?

No fix has been published for CVE-2002-0440 yet. Limit exposure of the affected software until one is available.

## Is CVE-2002-0440 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2002-0440 exists.

Public exploit code:

- Trend Micro Interscan VirusWall 3.5/3.6 - Content-Length Scan Bypass (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2001-1573](https://insights.sbomify.com/CVE-2001-1573/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-1574](https://insights.sbomify.com/CVE-2001-1574/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0679](https://insights.sbomify.com/CVE-2001-0679/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0432](https://insights.sbomify.com/CVE-2001-0432/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0133](https://insights.sbomify.com/CVE-2001-0133/): Information disclosure in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2002-0440 and fix it if it is affected.

What it is: CVE-2002-0440 is a high-severity vulnerability in n/a, published on 11 Jun 2002. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2002-0440 exists.

Affected product: n/a. 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-2002-0440/ (Markdown: https://insights.sbomify.com/CVE-2002-0440/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2002-0440
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2002-0440
- OSV: https://osv.dev/vulnerability/CVE-2002-0440

---
From sbomify Insights: https://insights.sbomify.com/CVE-2002-0440/
Summaries are generated and may contain mistakes; the official description above is the record.