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The palera1n team launched a jailbreak tool for iOS 16 in the middle of this month. Jailbreak can remove software restrictions on iOS devices, so that users can access and modify system files, enabling various custom modifications and application sideloading and other functions . And now a developer has managed to exploit a vulnerability found in iOS 16 to change the default font of the iOS system without jailbreaking.
Developer Zhuowei Zhang shared the GitHub project on his personal Twitter, which he calls a “proof-of-concept application.” Zhang said the app uses the CVE-2022-46689 vulnerability to override the default iOS fonts so that users can customize the appearance of the system with fonts other than the default (San Francisco).
IT Home learned that iOS 16.1.2 and earlier versions are affected by the CVE-2022-46689 vulnerability, which basically allows applications to execute arbitrary code with kernel privileges. The vulnerability has been fixed in iOS 16.2, and the new version also fixes a series of other security vulnerabilities found in previous iOS versions.
Since iOS has its own font format, the developers experimented with only a few fonts, including DejaVu Sans Condensed, Serif, Mono, and Choco Cooky.
Zhang said that this modification is theoretically safe for everyone, so these font changes will be undone after the device is restarted. Still, the developers advise users to make backups before replacing the default system fonts.
While the app Zhang created doesn’t require a jailbreak, installing it on an iPhone or iPad might not be as easy. This is because you need to compile the Xcode project yourself or manually sign the IPA file with a developer certificate to install it on your device.
media reports
IT Home Sohu Technology Sina Technology
related events
- No need to jailbreak, the developer successfully modified the default font of the system by exploiting Apple’s iOS 16 vulnerability2022-12-27
- Apple accuses jailbreak maker Corelli of software copyright infringement2019-12-30
- Apple has been exposed to serious vulnerabilities: iPhone 4s to iPhone X can be permanently jailbroken and cannot be repaired2019-09-27
- Apple sues startup Corellium for copying iOS without permission 2019-08-15
- Apple’s iOS 11.1.2 imperfect jailbreak tool released called panga 2017-12-26
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