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CVE-2014-9365

Published: 12 December 2014

The HTTP clients in the (1) httplib, (2) urllib, (3) urllib2, and (4) xmlrpclib libraries in CPython (aka Python) 2.x before 2.7.9 and 3.x before 3.4.3, when accessing an HTTPS URL, do not (a) check the certificate against a trust store or verify that the server hostname matches a domain name in the subject's (b) Common Name or (c) subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Notes

AuthorNote
mdeslaur
This is https://www.python.org/dev/peps/pep-0476/
Before this was implemented in python 2.7.9 and 3.4.3,
applications needed to verify certificate validity themselves.
This is quite a large change to backport into stable releases,
and the change in behaviour most certainly will break certain
setups.
tyhicks
We're considering the possibility of offering an opt-in fix for
this issue via PEP 493 if the backport is not too invasive
python3.4 in Ubuntu 14.04 LTS can be configured to perform full
certificate verification via the /etc/python3.4/cert-verification.conf
configuration file
mdeslaur
we will not be fixing this in Ubuntu 14.04 LTS before EoL.
Users are encouraged to migrate to a more recent Ubuntu version,
or migrate their applications to python 3.
Priority

Medium

Status

Package Release Status
python2.7
Launchpad, Ubuntu, Debian
artful Not vulnerable

precise Ignored

trusty Ignored

upstream
Released (2.7.9-1)
vivid Not vulnerable
(2.7.9-2ubuntu3)
wily Not vulnerable

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

python3.2
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist
(precise was needed)
trusty Does not exist

upstream Needs triage

vivid Does not exist

wily Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

python3.4
Launchpad, Ubuntu, Debian
artful Does not exist

precise Does not exist

trusty
Released (3.4.3-1ubuntu1~14.04.2)
upstream
Released (3.4.3)
vivid Not vulnerable
(3.4.3-3)
wily Not vulnerable

xenial Does not exist

yakkety Does not exist

zesty Does not exist