Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2016.2292
Important: python-twisted-web security update
30 September 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: python-twisted-web
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux WS/Desktop 6
Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-1000111
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2016-1978.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running python-twisted-web check for an updated version of the
software for their operating system.
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: python-twisted-web security update
Advisory ID: RHSA-2016:1978-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1978.html
Issue date: 2016-09-29
CVE Names: CVE-2016-1000111
=====================================================================
1. Summary:
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.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
3. Description:
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.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1357345 - CVE-2016-1000111 Python Twisted: sets environmental variable based on user supplied Proxy request header
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
python-twisted-web-8.2.0-5.el6_8.src.rpm
i386:
python-twisted-web-8.2.0-5.el6_8.i686.rpm
x86_64:
python-twisted-web-8.2.0-5.el6_8.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
python-twisted-web-8.2.0-5.el6_8.src.rpm
i386:
python-twisted-web-8.2.0-5.el6_8.i686.rpm
ppc64:
python-twisted-web-8.2.0-5.el6_8.ppc64.rpm
s390x:
python-twisted-web-8.2.0-5.el6_8.s390x.rpm
x86_64:
python-twisted-web-8.2.0-5.el6_8.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
python-twisted-web-8.2.0-5.el6_8.src.rpm
i386:
python-twisted-web-8.2.0-5.el6_8.i686.rpm
x86_64:
python-twisted-web-8.2.0-5.el6_8.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
Source:
python-twisted-web-12.1.0-5.el7_2.src.rpm
x86_64:
python-twisted-web-12.1.0-5.el7_2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
Source:
python-twisted-web-12.1.0-5.el7_2.src.rpm
ppc64:
python-twisted-web-12.1.0-5.el7_2.ppc64.rpm
ppc64le:
python-twisted-web-12.1.0-5.el7_2.ppc64le.rpm
s390x:
python-twisted-web-12.1.0-5.el7_2.s390x.rpm
x86_64:
python-twisted-web-12.1.0-5.el7_2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
Source:
python-twisted-web-12.1.0-5.el7_2.src.rpm
x86_64:
python-twisted-web-12.1.0-5.el7_2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2016-1000111
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iD8DBQFX7WQdXlSAg2UNWIIRAvsdAJwJNdcT5nFCAQd4ns+oOb3mpPX6wwCfUEF+
19pGvKakDq7qt0ackqgQTzA=
=2dOk
- -----END PGP SIGNATURE-----
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=TO2R
-----END PGP SIGNATURE-----