Security Analysis and Research based on SIP in IMS
YU Bai-feng · Communications technology · 2008
This paper first analyzes the five ordinary leaks: register hijack, impersonation of a server,tampering of message bodies, tearing-down of sessions and denial of service, and then discusses the accesssecurity and network domain security in IMS security mechanism, and the establishment flow of securityassociation. Based on these work it analyzes the feasibility of attack by making use of SIP leaks in IMS.The result shows that the security mechanism of IMS can resist all the attack based on SIP leaks except theDOS. Finally it gives an attack flow of DOS and describes a simulation of the DOS attack by using open SERin a 100M LAN.