Apple has released an update for iOS 7. The update brings the iOS up to version 7.0.6.
This update provides a fix for SSL connection verification. You can read about Apple Security updates. Although, in general, “Apple does not disclose, discuss or confirm security issues until a full investigation has occurred and any necessary patches or releases are available.”
To download the update, tap on Settings > General > Software update.
You may want to use Wi-Fi access as the file is approximately 33 MB.