The RFC_SET_REG_SERVER_PROPERTY function in the SAP RFC Library 6.40 and 7.00 before 20070109 implements an option for exclusive access to an RFC server, which allows remote attackers to cause a denial of service (client lockout) via unspecified vectors. NOTE: This information is based upon a vague initial disclosure. Details will be updated after the grace period has ended.
https://exchange.xforce.ibmcloud.com/vulnerabilities/33418
http://www.vupen.com/english/advisories/2007/1270
http://www.securityfocus.com/bid/23309
http://www.securityfocus.com/archive/1/464685/100/0/threaded