Engadget Logo Engjet Japanese version of iPhone Wi-Fi features that are invalidated SSID bugs, iOS 14.7 modified with the latest beta?

Over the past few weeks, the iPhone has been reported that the Wi-Fi function is invalidated by connecting or entering the wi-Fi network with a specific name (SSID).For this matter, Apple started distribution on the 8th (US land time) iOS 14.It is reported that bugs seem to be modified in the latest beta version (both developers and public beta).

The bug in question was the first surface in June.CARL SCOU, a security researcher, first connects to a Wi-Fi network with a specific SSID ("%P%S%S%S%S%N").The symptoms did not fix even if restarted, and it was reported that the only way to recover the network settings was reset.

In addition, Schou has warned that he has found a new harmful SSID earlier this month.It seems that Wi-Fi-related functions can no longer be used by entering the Wi-Fi network range, and the iPhone itself has to be initialized to a factory shipping state, not even resetting the network settings.

However, according to the report by Zollotech of YouTuber, iOS 14.7 In the iPhone where the latest beta is installed, it will work without any problems even if you connect to any of these specific Wi-Fi names.

The cause of this bug is not known at the time of writing, but Benjamin Mayo of 9to5mac USA speculates that both SSIDs have " %".In programming languages, "%[Character]" syntax is often used to format variables into output strings, which may be the cause.

For example, in the C language, a designated child called "%N" means saving the number of characters written in the format string into a variable passed to the character string format function.

And the iOS Wi-Fi sub-system has inadvertently passed the Wi-Fi network name (SSID) to some internal library running the character string format, and as a result, any memory writing and buffer overflow.Occurs.MAYO speculates that a memory destruction bug is generated, and that the iOS watchdog (timer for runaway prevention) ends the process, so that Wi-Fi cannot be used in effect.

Current latest version iOS 14.More than a month has passed since 6 was distributed, and it's about time iOS 14.It should not be strange even if the delivery time of 7 is approaching.However, it is not determined when it will be released, so be careful not to approach the Wi-Fi network that contains " %" until then.

Source: ZOLLOTECH (YouTube)

VIA: 9to5mac