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Google Researchers Find Remotely Exploitable Vulnerabilities in iOS

30
Jul
2019

Four of the vulnerabilities were addressed with the release of iOS 12.4 on July 22, but the patch included in that platform release does not resolve the fifth security bug, one of the researchers who discovered the issue reveals.

Tracked as CVE-2019-8646, the first of these vulnerabilities “allows an attacker to read files off a remote device with no user interaction, as user mobile with no sandbox,” Google Project Zero security researcher Natalie Silvanovich explains.

The issue, the researcher notes, is that the class _NSDataFileBackedFuture can be deserialized even if secure encoding is enabled, which could lead to access to local files or to an NSData object being created with a length that is different than the length of its byte array.

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