Scientific Linux SLSA-2016:1978-1 Important Python Twisted-Web Proxy Issue

Date: Fri, 30 Sep 2016 18:00:35 -0000
Reply-To: scientific-linux-users@
Sender: Security Errata for Scientific Linux
 
From: Kevin Hill 
Subject: Security ERRATA Important: python-twisted-web on SL6.x,
 SL7.x i386/x86_64
MIME-Version: 1.0
Message-ID: <20160930180035.9386.39296@slpackages.fnal.gov>

Synopsis: Important: python-twisted-web security update
Advisory ID: SLSA-2016:1978-1
Issue Date: 2016-09-29
CVE Numbers: CVE-2016-1000111
--

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.
--

SL6
 x86_64
 python-twisted-web-8.2.0-5.el6_8.x86_64.rpm
 i386
 python-twisted-web-8.2.0-5.el6_8.i686.rpm
SL7
 x86_64
 python-twisted-web-12.1.0-5.el7_2.x86_64.rpm

- Scientific Linux Development Team
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