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Gentoo Linux Security Advisory GLSA 201607-10
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https://security.gentoo.org/
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Severity: Normal
Title: Varnish: Multiple vulnerabilities
Date: July 20, 2016
Bugs: #542886
ID: 201607-10
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Synopsis
========
Improper input validation in Varnish allows remote attackers to conduct
HTTP smuggling attacks, and possibly trigger a buffer overflow.
Background
==========
Varnish is a web application accelerator.
Affected packages
=================
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Package / Vulnerable / Unaffected
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1 www-servers/varnish < 3.0.7 >= 3.0.7
Description
===========
Varnish fails to properly validate input from HTTP headers, and does
not deny requests with multiple Content-Length headers.
Impact
======
Remote attackers could conduct an HTTP response splitting attack, which
may further enable them to conduct Cross-Site Scripting (XSS), Cache
Poisoning, Defacement, and Page Hijacking.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Varnish users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/varnish-3.0.7"
References
==========
[ 1 ] CVE-2015-8852
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8852
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201607-10
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2016 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5