Gentoo: GLSA-201607-10 Normal: Varnish Input Attacks - Remote Threats
gentoo
July 20, 2016
Improper input validation in Varnish allows remote attackers to conduct HTTP smuggling attacks, and possibly trigger a buffer overflow.
Summary
Varnish fails to properly validate input from HTTP headers, and does not deny requests with multiple Content-Length headers.
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
style>.gentoo_availability{display:block;}
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.
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Severity: Normal
Title: Varnish: Multiple vulnerabilities
Date: July 20, 2016
Bugs: #542886
ID: 201607-10
Background
Varnish is a web application accelerator.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-servers/varnish < 3.0.7 >= 3.0.7
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.
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