Apple Insider reported that when trying to connect to the hotspot, Shaw found that the iPhone could not connect at all.
Apple
A bug has been discovered in iOS that could turn off the iPhone’s ability to connect to Wi-Fi hotspots. If it initially tries to connect to the hotspot with a specific name, it terminates the function. Security researcher Carl Shaw gave a personal Wi-Fi hotspot a name with special characters. Apple Insider reported that when trying to connect to the hotspot, Shaw found that the iPhone couldn’t connect at all, and later discovered that it completely disabled Wi-Fi connectivity on the device.
According to beepig computer, even after changing the SSID of the hotspot and rebooting the iPhone the problem persists as well as attempts to connect to other hotspots have failed. This issue was also confirmed by others who tested the same SSID name separately. Tests also indicate that this is only a problem with the iPhone, as Android devices connect to unusually named access points without issue.
After joining my personal WiFi with the SSID “%p%s%s%s%s%n”, my iPhone permanently disabled it’s WiFi functionality. Neither rebooting nor changing SSID fixes it :~) pic.twitter.com/2eue90JFu3
— Carl Schou (@vm_call) June 18, 2021
Other researchers investigating the phenomenon believe it to be an issue with input parsing, in which the percent sign may initially be misinterpreted by iOS as a string-format specifier and the following characters are used instead of plain text. Can be a variable or a command. To fix the problem on the affected iPhone, users will need to reset their network settings.
The report states that the search is reminiscent of text messages that contain strings and special characters that can cause problems for the iPhone and load. For example, April’s ‘text bomb’ forced the iPhone to crash if a flag emoji and a specific Sindhi language character were seen in an incoming notification, he added.
(IANS)
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