CVE-2016-5385: Improper Access Control

July 18, 2016 (updated March 4, 2019)

PHP does not attempt to address RFC section namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application’s outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, as demonstrated by (1) an application that makes a getenv(‘HTTP_PROXY’) call or (2) a CGI configuration of PHP, aka an httpoxy issue.

References

www.drupal.org/SA-CORE-2016-003

Code Behaviors & Features

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