The kernel in Apple iOS before 5 and Apple TV before 4.4 does not properly recover memory allocated for incomplete TCP connections, which allows remote attackers to cause a denial of service (resource consumption) by making many connection attempts.

CalDAV in Apple iOS before 5 does not validate X.509 certificates for SSL sessions, which allows man-in-the-middle attackers to spoof calendar servers and obtain sensitive information via an arbitrary certificate.

The WiFi component in Apple iOS before 5 stores WiFi credentials in an unspecified file, which makes it easier for remote attackers to obtain sensitive information via a crafted application.

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.

Cross-site scripting (XSS) vulnerability in WebKit, as used in Apple iOS before 5 and Safari before 5.1.1, allows remote attackers to inject arbitrary web script or HTML via vectors involving inactive DOM windows.

The Keyboards component in Apple iOS before 5 displays the final character of an entered password during a subsequent use of a keyboard, which allows physically proximate attackers to obtain sensitive information by reading this character.

The Data Security component in Apple iOS before 5 and Apple TV before 4.4 does not properly restrict use of the MD5 hash algorithm within X.509 certificates, which makes it easier for man-in-the-middle attackers to spoof servers or obtain sensitive information via a crafted certificate.

Cross-site scripting (XSS) vulnerability in Safari in Apple iOS before 5 allows remote web servers to inject arbitrary web script or HTML via a file accompanied by a "Content-Disposition: attachment" HTTP header.

The Settings component in Apple iOS before 5, when a configuration profile is used for a locale other than English, does not properly implement localization, which makes it easier for attackers to have an unspecified impact by leveraging incorrect configuration display.

The Data Access component in Apple iOS before 5 does not properly handle the existence of multiple user accounts on the same mail server, which allows local users to bypass intended access restrictions in opportunistic circumstances by leveraging a different account's cookie.