pyrad uses Python's random module at multiple places (most prominently in packet.py). In the case of the authenticator data, this pseudo-random data is being used to secure a password sent over the wire. Unfortunately, Python's random module is not suitable for this purpose. The end result is a password hashing that may be predictable.
A patch is available: https://github.com/wichert/pyrad/commit/38f74b36814ca5b1a27d9898141126af4953bee5
Please use the following update submission link to create the Bodhi request for this issue as it contains the top-level parent bug(s) as well as this tracking bug. This will ensure that all associated bugs get updated when new packages are pushed to stable. Please also ensure that the "Close bugs when update is stable" option remains checked. Bodhi update submission link: https://admin.fedoraproject.org/updates/new/?type_=security&bugs=911682,894487
*** Bug 894488 has been marked as a duplicate of this bug. ***
python-pyrad-2.0-3.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/python-pyrad-2.0-3.fc19
python-pyrad-2.0-3.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/python-pyrad-2.0-3.fc18
python-pyrad-2.0-3.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/python-pyrad-2.0-3.fc20
Package python-pyrad-2.0-3.fc20: * should fix your issue, * was pushed to the Fedora 20 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing python-pyrad-2.0-3.fc20' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-15838/python-pyrad-2.0-3.fc20 then log in and leave karma (feedback).
python-pyrad-2.0-3.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
python-pyrad-2.0-3.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
python-pyrad-2.0-3.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.