CVE-2013-6371
The hash functionality in json-c before 0.12 allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted JSON data, involving collisions.
Date published : 2014-04-21
http://www.securityfocus.com/bid/66715
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html