UBUNTU-CVE-2016-4553

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    UBUNTU-CVE-2016-4553

    Published: 10 May 2016Last Modified: 4 Feb 2026
    Upstream:
    CVE-2016-4553
    Aliases:
    USN-2995-1

    Summary:

    Details: client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.

    References: https://ubuntu.com/security/CVE-2016-4553, http://www.squid-cache.org/Advisories/SQUID-2016_7.txt, https://ubuntu.com/security/notices/USN-2995-1, https://www.cve.org/CVERecord?id=CVE-2016-4553

    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