This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.
The remote Red Hat host is missing a security update.
An update for python-twisted-web is now available for Red Hat
Enterprise Linux 6 and Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.
Twisted is an event-based framework for internet applications. Twisted
Web is a complete web server, aimed at hosting web applications using
Twisted and Python, but fully able to serve static pages too.
Security Fix(es) :
* It was discovered that python-twisted-web 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.
Note: After this update, python-twisted-web will no longer pass the
value of the Proxy request header to scripts via the HTTP_PROXY
Red Hat would like to thank Scott Geary (VendHQ) for reporting this
See also :
Update the affected python-twisted-web package.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.8
Public Exploit Available : true