common.py in Paramiko 1.7.1 and earlier, when using threads or forked processes, does not properly use RandomPool, which allows one session to obtain sensitive information from another session by predicting the state of the pool.
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00594.html
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00529.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/39749
https://bugzilla.redhat.com/show_bug.cgi?id=428727
http://www.securityfocus.com/bid/27307
http://www.lag.net/pipermail/paramiko/2008-January/000599.html
http://security.gentoo.org/glsa/glsa-200803-07.xml
http://secunia.com/advisories/29168
http://secunia.com/advisories/28510