CVE-2015-8852
HighSummary
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 (carriage return) character in conjunction with multiple Content-Length headers in an HTTP request.
Risk Assessment
Attackers can exploit this vulnerability to manipulate HTTP responses, potentially leading to data disclosure or session hijacking.
Recommendation
It is recommended to upgrade Varnish to version 3.0.7 or later and to monitor and filter HTTP headers to prevent injection.
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Original NVD description (English source)
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.