The UIKit Alerts component in Apple iOS before 5 allows remote attackers to cause a denial of service (device hang) via a long tel: URL that triggers a large size for the acceptance dialog.
Apple iOS is prone to a denial-of-service vulnerability when handling specially crafted webpages.Attackers can exploit this issue to cause the device to hang, denying service to legitimate users.NOTE: This issue was previously discussed in BID 50086 (Apple iPhone/iPad/iPod touch Prior to iOS 5 Multiple Vulnerabilities) but has been given its own record to better document it.
Updates are available; please see the references for more information.
Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: email@example.com.