Apple released a quick bug fix for iOS 4. (Justin Sullivan/GETTY IMAGES)

According to Apple’s release notes, the bug may have allowed an “attacker with a privileged network position [to] capture or modify data in sessions protected by SSL/TLS,” or let hackers on a network circumvent encryption.

Jailbreakers need not worry that this latest update — a rather big one at 666 megabytes — will affect their phones. According to Redmond Pie, the latest version of the jailbreak utility RedSn0w is still working.

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