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CVE-2016-4553

Published: 10 May 2016

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.

Notes

AuthorNote
sbeattie
3.2.0.11 and later versions up to and including 3.5.17

Priority

Medium

Cvss 3 Severity Score

8.6

Score breakdown

Status

Package Release Status
squid3
Launchpad, Ubuntu, Debian
precise Not vulnerable
(3.2.x and newer only)
trusty
Released (3.3.8-1ubuntu6.8)
upstream
Released (3.5.18,4.0.10)
wily
Released (3.3.8-1ubuntu16.3)
xenial
Released (3.5.12-1ubuntu7.2)
Patches:
upstream: http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch
upstream: http://bazaar.launchpad.net/~squid/squid/3.4/revision/13240

Severity score breakdown

Parameter Value
Base score 8.6
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N