[egenix-users] ANN: eGenix pyOpenSSL Distribution 0.13.9

eGenix Team: M.-A. Lemburg info at egenix.com
Fri Jun 12 11:25:40 CEST 2015


                   eGenix.com pyOpenSSL Distribution

                            Version 0.13.9

            An easy-to-install and easy-to-use distribution
            of the pyOpenSSL Python interface for OpenSSL -
           available for Windows, Mac OS X and Unix platforms

This announcement is also available on our web-site for online reading:


The eGenix.com pyOpenSSL Distribution includes everything you need to
get started with SSL in Python.

It comes with an easy-to-use installer that includes the most recent
OpenSSL library versions in pre-compiled form, making your application
independent of OS provided OpenSSL libraries:


pyOpenSSL is an open-source Python add-on that allows writing SSL/TLS-
aware network applications as well as certificate management tools:


OpenSSL is an open-source implementation of the SSL/TLS protocol:



This new release of the eGenix.com pyOpenSSL Distribution includes the
following updates:

New in eGenix pyOpenSSL

 * Fixed a bug in the build process which resulted in the CA bundle
   files not get installed in the OpenSSL/ package dir.

 * Added a work-around for recent pip versions not showing the
   installer output, causing an apparently hanging installation
   process. The installer will now use a timeout when entering the
   crypto confirmation and report how to fix the problem (by using an
   environment variable EGENIX_CRYPTO_CONFIRM for confirmation).

 * Updated the Mozilla CA root bundle to version 2015-04-22.

 * Various minor fixes to the web installer to make installations on
   Linux and FreeBSD more robust, having pip uninstall not remove the
   .pyc/.pyo files, intermittent error causing a source installation
   in some rare cases.

New in OpenSSL

 * Updated included OpenSSL libraries from OpenSSL 1.0.1m to
   1.0.1n. See https://www.openssl.org/news/secadv_20150611.txt ​for a
   complete list of changes. The following fixes are relevant for
   pyOpenSSL applications:

   - CVE-2015-1788: Possible infinite loop during client
     authentication, which can be used for Denial of Service (DoS)

   - CVE-2015-1789: X509_cmp_time does not properly check the length
     of the ASN1_TIME string and can read a few bytes out of bounds,
     which can lead to a segmentation fault.

   - CVE-2015-1790: The PKCS#7 parsing code does not handle missing
     inner EncryptedContent correctly, which can lead to a NULL
     pointer dereference on parsing.

   - CVE-2015-1792: When verifying a signedData message the CMS code
     can enter an infinite loop if presented with an unknown hash
     function OID.

   - CVE-2015-1791: If a NewSessionTicket is received by a
     multi-threaded client when attempting to reuse a previous ticket
     then a race condition can occur potentially leading to a double
     free of the ticket data.

Please see the product changelog for the full set of changes.


pyOpenSSL / OpenSSL Binaries Included

In addition to providing sources, we make binaries available that
include both pyOpenSSL and the necessary OpenSSL libraries for all
supported platforms: Windows, Linux, Mac OS X and FreeBSD, for x86 and

To simplify installation, we have uploaded a web installer to PyPI
which will automatically choose the right binary for your platform, so
a simple

    pip install egenix-pyopenssl

will get you the package with OpenSSL libraries installed. Please see
our installation instructions for details:


We have also added .egg-file distribution versions of our eGenix.com
pyOpenSSL Distribution for Windows, Linux and Mac OS X to the
available download options. These make setups using e.g. zc.buildout
and other egg-file based installers a lot easier.


The download archives and instructions for installing the package can
be found at:



Before installing this version of pyOpenSSL, please make sure that
you uninstall any previously installed pyOpenSSL version. Otherwise,
you could end up not using the included OpenSSL libs.


Commercial support for these packages is available from eGenix.com.
Please see


for details about our support offerings.


For more information about the eGenix pyOpenSSL Distribution, licensing
and download instructions, please visit our web-site or write to
sales at egenix.com.

About eGenix (http://www.egenix.com/):

    eGenix is a software project, consulting and product company
    focusing on expert project services and professional quality
    products for companies, Python users and developers.

Marc-Andre Lemburg

Professional Python Services directly from the Source  (#1, Jun 12 2015)
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   eGenix.com Software, Skills and Services GmbH  Pastor-Loeh-Str.48
    D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg
           Registered at Amtsgericht Duesseldorf: HRB 46611

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