CVE-2016-4553
First published: Mon May 09 2016(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/squid | <3.5.18 | 3.5.18 |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.10 | |
| Ubuntu | =16.04 | |
| Squid Web Proxy Cache | <=3.5.17 | |
| Squid Web Proxy Cache | =4.0.1 | |
| Squid Web Proxy Cache | =4.0.2 | |
| Squid Web Proxy Cache | =4.0.3 | |
| Squid Web Proxy Cache | =4.0.4 | |
| Squid Web Proxy Cache | =4.0.5 | |
| Squid Web Proxy Cache | =4.0.6 | |
| Squid Web Proxy Cache | =4.0.7 | |
| Squid Web Proxy Cache | =4.0.8 | |
| Squid Web Proxy Cache | =4.0.9 | |
| Oracle Linux | =7 |
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Reference Links
- http://bugs.squid-cache.org/show_bug.cgi?id=4501
- 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/1035768
- http://www.squid-cache.org/Advisories/SQUID-2016_7.txt
- http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14039.patch
- http://www.ubuntu.com/usn/USN-2995-1
- https://access.redhat.com/errata/RHSA-2016:1139
- https://access.redhat.com/errata/RHSA-2016:1140
- https://security.gentoo.org/glsa/201607-01
- https://access.redhat.com/security/cve/CVE-2009-0801
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1334251
- https://hostoftroubles.com/
- https://bugzilla.redhat.com/show_bug.cgi?id=1334233
Frequently Asked Questions
What is the severity of CVE-2016-4553?
CVE-2016-4553 has a critical severity level as it allows remote attackers to conduct cache-poisoning attacks by exploiting improper handling of the Host header.
How do I fix CVE-2016-4553?
To fix CVE-2016-4553, upgrade Squid to version 3.5.18 or 4.0.10 or later.
Which versions of Squid are affected by CVE-2016-4553?
CVE-2016-4553 affects Squid versions prior to 3.5.18 and all versions in the 4.x series prior to 4.0.10.
What types of attacks can CVE-2016-4553 enable?
CVE-2016-4553 can enable cache-poisoning attacks, allowing attackers to serve malicious content to users.
Is CVE-2016-4553 relevant for all Squid deployments?
CVE-2016-4553 is particularly relevant for deployments using affected Squid versions that handle HTTP requests without proper validation.
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- version/ubuntu/12.04
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- version/squid web proxy cache/3.5.17
- version/squid web proxy cache/4.0.1
- version/squid web proxy cache/4.0.2
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- version/squid web proxy cache/4.0.4
- version/squid web proxy cache/4.0.5
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- version/squid web proxy cache/4.0.9
- vendor/oracle
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