CVE-2016-4553

8.6 HIGH

Published: May 10, 2016 Modified: May 06, 2026

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://bugs.squid-cache.org/show_bug.cgi?id=4501

Source: cve@mitre.org

Vendor Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html

Source: cve@mitre.org

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html

Source: cve@mitre.org

http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html

Source: cve@mitre.org

http://www.debian.org/security/2016/dsa-3625

Source: cve@mitre.org

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

Source: cve@mitre.org

Third Party Advisory

http://www.securitytracker.com/id/1035768

Source: cve@mitre.org

Third Party Advisory

http://www.squid-cache.org/Advisories/SQUID-2016_7.txt

Source: cve@mitre.org

Vendor Advisory

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch

Source: cve@mitre.org

http://www.ubuntu.com/usn/USN-2995-1

Source: cve@mitre.org

Third Party Advisory

https://access.redhat.com/errata/RHSA-2016:1139

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2016:1140

Source: cve@mitre.org

https://security.gentoo.org/glsa/201607-01

Source: cve@mitre.org

http://bugs.squid-cache.org/show_bug.cgi?id=4501