UBUNTU-CVE-2016-4554

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    UBUNTU-CVE-2016-4554

    Published: 10 May 2016Last Modified: 4 Feb 2026
    Upstream:
    CVE-2016-4554
    Aliases:
    USN-2995-1

    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: https://ubuntu.com/security/CVE-2016-4554, http://www.squid-cache.org/Advisories/SQUID-2016_8.txt, https://ubuntu.com/security/notices/USN-2995-1, https://www.cve.org/CVERecord?id=CVE-2016-4554

    Affected packages

    Package

    Name: squid3

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.3.8-1ubuntu6.8

    Affected versions

    3.3.8-1ubuntu3
    3.3.8-1ubuntu4
    3.3.8-1ubuntu5
    3.3.8-1ubuntu6
    3.3.8-1ubuntu6.1
    3.3.8-1ubuntu6.2
    3.3.8-1ubuntu6.3
    3.3.8-1ubuntu6.4
    3.3.8-1ubuntu6.6

    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
    UBUNTU-CVE-2016-4554 | CVE-DB