Varnish 3.x before 3.0.7, when used in certain stacked installations,...

Vulnerability Description

Varnish 3.x before 3.0.7, when used in certain stacked installations, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a header line terminated by a \r (carriage return) character in conjunction with multiple Content-Length headers in an HTTP request.

References

• http://www.debian.org/security/2016/dsa-3553
• https://www.varnish-cache.org/lists/pipermail/varnish-announce/2015-March/000701.html
• http://www.openwall.com/lists/oss-security/2016/04/18/7
• https://security.gentoo.org/glsa/201607-10
• https://github.com/varnish/Varnish-Cache/commit/29870c8fe95e4e8a672f6f28c5fbe692bea09e9c
• https://github.com/varnish/Varnish-Cache/commit/85e8468bec9416bd7e16b0d80cb820ecd2b330c3
• http://www.openwall.com/lists/oss-security/2016/04/16/1
• http://lists.opensuse.org/opensuse-updates/2016-05/msg00064.html