Algorithmic complexity vulnerability in Cybozu Remote Service Manager through 2.3.0 and 3.x through 3.1.2 allows remote attackers to cause a denial of service (CPU consumption) via vectors that trigger colliding hash-table keys. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-1983.
https://cs.cybozu.co.jp/2015/001245.html