{"id":"CVE-2005-0194","aliases":["DEBIAN-CVE-2005-0194","DSA-667-1","EUVD-2005-0195","GHSA-3vc4-p4vg-f376"],"status":"published","title":"Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs),...","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.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.05116,"percentile":0.9244,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2005-02-04T00:00:00Z","modified":"2026-10-23T03:47:29Z","fixes":[{"ecosystem":"Debian:12","package":"squid","fixed_in":["2.5.7-7"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"squid","fixed_in":["2.5.7-7"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"squid","fixed_in":["2.5.7-7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.7-7"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.7-7"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.7-7"}]}]},{"source":"osv","ecosystem":"Debian:3.0","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.6-2woody6"}]}],"versions":["2.4.6-2woody4"],"bundled":4}],"products":[{"vendor":"squid","product":"squid"}],"references":[{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000923","tags":["vendor-advisory","x_refsource_CONECTIVA","x_transferred","Patch","fix"]},{"url":"http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-empty_acls","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"http://marc.info/?l=bugtraq\u0026m=110901183320453\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","web"]},{"url":"http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-empty_acls.patch","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"http://fedoranews.org/updates/FEDORA--.shtml","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.squid-cache.org/bugs/show_bug.cgi?id=1166","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.debian.org/security/2005/dsa-667","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.kb.cert.org/vuls/id/260421","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Patch","Third Party Advisory","US Government Resource","advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2005-0194"},{"url":"https://github.com/advisories/GHSA-3vc4-p4vg-f376"},{"url":"https://security-tracker.debian.org/tracker/CVE-2005-0194","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2005-0194","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.","status":"published","published":"2005-02-06T05:00:00Z","modified":"2024-08-07T21:05:24.953Z","updated_at":"2026-11-02T14:33:40.578358Z"}],"euvd":[{"id":"EUVD-2005-0195","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.","status":"published","published":"2005-02-06T05:00:00Z","modified":"2024-08-07T21:05:24Z","updated_at":"2026-11-03T01:15:39.756514Z"}],"ghsa":[{"id":"GHSA-3vc4-p4vg-f376","title":"Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs),...","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.","status":"published","published":"2022-05-01T01:47:39Z","modified":"2023-01-30T05:06:14Z","updated_at":"2026-11-02T14:47:27.248528Z"}],"nvd":[{"id":"CVE-2005-0194","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.","status":"published","published":"2005-05-02T04:00:00Z","modified":"2026-06-16T22:10:40.17Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:54.594271Z"}],"osv":[{"id":"CVE-2005-0194","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.","status":"published","published":"2005-05-02T04:00:00Z","modified":"2026-04-10T03:36:52.542948Z","updated_at":"2026-11-02T15:43:56.315348Z"},{"id":"DEBIAN-CVE-2005-0194","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.","status":"published","published":"2005-05-02T04:00:00Z","modified":"2026-10-23T03:47:29.190339364Z","updated_at":"2026-11-02T15:45:22.831407Z"},{"id":"DSA-667-1","title":"squid - 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