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    CVE-2005-0194

    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.

    Published:Feb 6, 2005
    Last Modified:Apr 16, 2026
    EPS:Feb 6, 2005
    EPSS Score:0.00656
    CVSS Score:10

    Affected Products

    Vendor
    Squid
    Product
    Squid

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2009-0478 (CVSS 5) — Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of…
    CVE-2008-1612 (CVSS 4.3) — The arrayShrink function (lib/Array.c) in Squid 2.6.STABLE17 allows attackers to cause a denial of service (pr…
    CVE-2007-1560 (CVSS 5) — The clientProcessRequest() function in src/client_side.c in Squid 2.6 before 2.6.STABLE12 allows remote attack…
    CVE-2007-0248 (CVSS 5) — The aclMatchExternal function in Squid before 2.6.STABLE7 allows remote attackers to cause a denial of service…
    CVE-2007-0247 (CVSS 5) — squid/src/ftp.c in Squid before 2.6.STABLE7 allows remote FTP servers to cause a denial of service (core dump)…
    CVE-2005-3322 (CVSS 5) — Unspecified vulnerability in Squid on SUSE Linux 9.0 allows remote attackers to cause a denial of service (cra…
    CVE-2005-3258 (CVSS 5) — The rfc1738_do_escape function in ftp.c for Squid 2.5 STABLE11 and earlier allows remote FTP servers to cause …
    CVE-2005-2917 (CVSS 5) — Squid 2.5.STABLE10 and earlier, while performing NTLM authentication, does not properly handle certain request…
    CVE-2005-2796 (CVSS 5) — The sslConnectTimeout function in ssl.c for Squid 2.5.STABLE10 and earlier allows remote attackers to cause a …
    CVE-2005-2794 (CVSS 5) — store.c in Squid 2.5.STABLE10 and earlier allows remote attackers to cause a denial of service (crash) via cer…

    References

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High