Important CentOS python-twisted-web Security Update


python-twisted-web-12.1.0-5.el7_2.src.rpm, python-twisted-web-12.1.0-5.el7_2.x86_64.rpm, python-twisted-web-8.2.0-5.el6_8.i686.rpm, python-twisted-web-8.2.0-5.el6_8.src.rpm, python-twisted-web-8.2.0-5.el6_8.x86_64.rpm,,
2018-01-18 11:12
2017-07-27 19:11
2017-04-01 19:10
2017-01-05 20:14


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. (CVE-2016-1000111)

Note: After this update, python-twisted-web 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.
Please see

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Affected package information

Release Package Patched in
6 python-twisted-web python-twisted-web-8.2.0-5.el6_8.i686.rpm
python-twisted-web python-twisted-web-8.2.0-5.el6_8.src.rpm
python-twisted-web python-twisted-web-8.2.0-5.el6_8.x86_64.rpm
7 python-twisted-web python-twisted-web-12.1.0-5.el7_2.src.rpm
python-twisted-web python-twisted-web-12.1.0-5.el7_2.x86_64.rpm