[转载]Exploiting Open Functionality in SMS
信息来源：邪恶八进制信息安全团队（[url]www.eviloctal.com[/url]）Cellular networks are a critical component of the economic and social infrastructures in which we live. In addition to voice services, these networks deliver alphanumeric text messages to the vast majority of wireless subscribers. To encourage the expansion of this new service, telecommunications companies offer connections between their networks and the Internet. The ramifications of such connections, however, have not been fully recognized. This research evaluates the security impact of the Short Messaging Service (SMS) interface on the availability of the cellular phone network. Specifically, we demonstrate the ability to deny voice service to large metropolitan areas with little more than a cable modem. Moreover, attacks targeting the entire United States are feasible with resources available to medium-sized zombie networks.
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