GLSA 201607-10: Varnish: Multiple vulnerabilities
| Severity: | normal |
| Title: | Varnish: Multiple vulnerabilities |
| Date: | 07/20/2016 |
| Bugs: | |
| ID: | 201607-10 |
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
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| www-servers/varnish | < 3.0.7 | >= 3.0.7 | All supported architectures |
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
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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 2010 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.