The _UpgradeBeforeConfigurationChange function in lib/client/gnt_cluster.py in Ganeti 2.10.0 before 2.10.7 and 2.11.0 before 2.11.5 uses world-readable permissions for the configuration backup file, which allows local users to obtain SSL keys, remote API credentials, and other sensitive information by reading the file, related to the upgrade command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/95256
http://www.securityfocus.com/bid/69186
http://www.securityfocus.com/archive/1/533119/100/0/threaded
http://www.ocert.org/advisories/ocert-2014-006.html
http://seclists.org/oss-sec/2014/q3/370
http://git.ganeti.org/?p=ganeti.git%3Ba=commit%3Bh=a89f62e2db9ccf715d64d1a6322474b54d2d9ae0