CVE-2004-0189

    Dashboard / Vulnerabilities / CVE-2004-0189

    CVE-2004-0189

    Published: 15 Mar 2004Last Modified: 10 Apr 2026

    Summary:

    Details: The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.

    References: ftp://patches.sgi.com/support/free/security/advisories/20040404-01-U.asc, http://security.gentoo.org/glsa/glsa-200403-11.xml, http://www.debian.org/security/2004/dsa-474, http://www.mandrakesoft.com/security/advisories?name=MDKSA-2004:025, http://www.securityfocus.com/bid/9778, http://www.squid-cache.org/Advisories/SQUID-2004_1.txt, http://www.securityfocus.com/bid/9778, http://www.squid-cache.org/Advisories/SQUID-2004_1.txt, http://www.securityfocus.com/bid/9778, http://www.squid-cache.org/Advisories/SQUID-2004_1.txt, ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.16/SCOSA-2005.16.txt, http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000838, http://marc.info/?l=bugtraq&m=108084935904110&w=2, http://www.osvdb.org/5916, http://www.redhat.com/support/errata/RHSA-2004-133.html, http://www.redhat.com/support/errata/RHSA-2004-134.html, https://exchange.xforce.ibmcloud.com/vulnerabilities/15366, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A877, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A941

    Affected packages

    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