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ChaiOS Bug Can Cause iMessage App Crash Loop

19 gennaio 2018

Software developer Abraham Masri discovered a bug that affects Apple devices. Reminiscent of the old “ that could crash the iMessage app, the that, when sent to other users, will cause the recipient's application to crash in a continuous loop.

Masri the proof of concept bug by creating a webpage hosted on GitHub and stuffed the site’s metadata with hundreds of thousands of unnecessary characters. The software developer said that the app crashes when trying to load all the unexpected information and that it was capable of crashing the whole operating system. , and saw how the bug reliably caused the Messages app to freeze entirely.

ChaiOS also affects MacOS. Apple to address the flaw for iOS 11.2.5 beta 6. Meanwhile, a final release is expected sometime soon with iOS 11.2.5 and MacOS High Sierra 10.13.3, watchOS 4.2.2, and tvOS 11.2.5.

According to live casino online Mobile researcher Lilang Wu, malformatted characters in the message causes the Webkit HTML engine to crash when the link is opened in Safari. However, Wu added that since the HTML file contains multiple malformatted characters, CoreText (which creates text layouts using character-to-glyph conversion, and then positions the glyphs in lines and paragraphs) will spend more CPU resources to match fonts for them. This results in the HTML to freeze the app or cause it to crash.

While Apple's ecosystem relatively sees fewer vulnerabilities and attacks, it's not perfect. For instance, last year, a malicious profile known as by iXintpwn/YJSNPI (detected by live casino online as TROJ_YJSNPI.A) . A separate iOS malware discovered in 2016 exploits a vulnerability in Apple’s Digital Rights Management (DRM) mechanism, allowing attackers to install malicious apps on the device after bypassing security measures. In 2017, live casino online also discovered a new variant of the iXintpwn/YJSNPI (detected by live casino online as IOS_YJSNPI.A) .?

The bug is a proof concept, and doesn’t seem to serve any other purpose but to irritate and prank Apple users. Users with devices affected by ChaiOS can quit the iMessage app on Mac or iOS, open it again, and delete the entire message thread. On Mac, swipe right on the trackpad or right click on to the person’s name to delete the conversation. While on iOS, swipe right on a person’s name to bring up the delete option.

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