CVE-2016-4554

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    CVE-2016-4554

    Published: 10 May 2016Last Modified: 8 Jul 2026

    Summary:

    Details: mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a crafted HTTP Host header, aka a "header smuggling" issue.

    References: http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html, http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html, http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html, http://www.debian.org/security/2016/dsa-3625, http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html, http://www.securitytracker.com/id/1035769, http://www.squid-cache.org/Advisories/SQUID-2016_8.txt, http://www.ubuntu.com/usn/USN-2995-1, https://access.redhat.com/errata/RHSA-2016:1138, https://access.redhat.com/errata/RHSA-2016:1139, https://access.redhat.com/errata/RHSA-2016:1140, https://security.gentoo.org/glsa/201607-01, http://www.squid-cache.org/Versions/v3/3.1/changesets/SQUID-2016_8.patch, http://www.squid-cache.org/Versions/v3/3.2/changesets/SQUID-2016_8.patch, http://www.squid-cache.org/Versions/v3/3.3/changesets/SQUID-2016_8.patch, http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_8.patch, http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_8.patch

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    SQUID_3_5_17

    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
    CVE-2016-4554 | CVE-DB