The httpd packages provide the Apache HTTP Server, a powerful, efficient, and
extensible web server.
- It was discovered that httpd used the value of the Proxy header from HTTP
requests to initialize the HTTP_PROXY environment variable for CGI scripts,
which in turn was incorrectly used by certain HTTP client implementations to
configure the proxy for outgoing HTTP requests. A remote attacker could possibly
use this flaw to redirect HTTP requests performed by a CGI script to an
attacker-controlled proxy via a malicious HTTP request. (CVE-2016-5387)
Note: After this update, httpd will no longer pass the value of the Proxy
request header to scripts via the HTTP_PROXY environment variable.
Red Hat would like to thank Scott Geary (VendHQ) for reporting this issue.