Zhang, G.G.ZhangPallares, J.J.J.J.PallaresRebahi, Y.Y.RebahiFischer-Hübner, S.S.Fischer-Hübner2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/36630210.1007/978-3-642-13241-4_14To mitigate identity theft in SIP networks, an inter-domain authentication mechanism based on certificates is proposed in RFC 4474 [10]. Unfortunately, the design of the certificate distribution in this mechanism yields some vulnerabilities. In this paper, we investigate an attack which exploits SIP infrastructures as reflectors to bring down a web server. Our experiments demonstrate that the attacks can be easily mounted. Finally, we discuss some potential methods to prevent this vulnerability.en004400SIP proxies: New reflectors in the internetconference paper