pip 1.3 through 1.5.6 allows local users to cause a denial of service (prevention of package installation) by creating a /tmp/pip-build-*
file for another user.
www.openwall.com/lists/oss-security/2014/11/19/17
www.openwall.com/lists/oss-security/2014/11/20/6
www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
www.securityfocus.com/bid/71209
bugs.debian.org/cgi-bin/bugreport.cgi?bug=725847
github.com/pypa/pip
github.com/pypa/pip/commit/043fe9f5700315d97f83609c1f59deece8f1b901
github.com/pypa/pip/pull/2122
nvd.nist.gov/vuln/detail/CVE-2014-8991