CVE-2005-0194

Name: CVE-2005-0194
Creator: NVD / NIST
Published: 2005-05-02T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.12%

Last modified Jun 16, 2026

CVE-2005-0194 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.12% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

5.12%

91.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Squid	Squid	2.0.patch1
Squid	Squid	2.0.patch2
Squid	Squid	2.0.pre1
Squid	Squid	2.0.release
Squid	Squid	2.1.patch1
Squid	Squid	2.1.patch2
Squid	Squid	2.1.pre1
Squid	Squid	2.1.pre3
Squid	Squid	2.1.pre4
Squid	Squid	2.1.release
Squid	Squid	2.2.devel3
Squid	Squid	2.2.devel4
Squid	Squid	2.2.pre1
Squid	Squid	2.2.pre2
Squid	Squid	2.2.stable1
Squid	Squid	2.2.stable2
Squid	Squid	2.2.stable3
Squid	Squid	2.2.stable4
Squid	Squid	2.2.stable5
Squid	Squid	2.3.devel2
Squid	Squid	2.3.devel3
Squid	Squid	2.3.stable1
Squid	Squid	2.3.stable2
Squid	Squid	2.3.stable3
Squid	Squid	2.3.stable4
Squid	Squid	2.3.stable5
Squid	Squid	2.4.stable1
Squid	Squid	2.4.stable2
Squid	Squid	2.4.stable3
Squid	Squid	2.4.stable4
Squid	Squid	2.4.stable6
Squid	Squid	2.4.stable7
Squid	Squid	2.5.stable1
Squid	Squid	2.5.stable2
Squid	Squid	2.5.stable3
Squid	Squid	2.5.stable4
Squid	Squid	2.5.stable5
Squid	Squid	2.5.stable6

References

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

Timeline

Published: May 2, 2005
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2005-0194?

How severe is CVE-2005-0194?

Severity scoring for CVE-2005-0194 is pending analysis. The EPSS model estimates a 5.12% probability of exploitation in the next 30 days.

How do I fix CVE-2005-0194?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2005-0194?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST