The final versions of iOS 15.3 and iPadOS 15.3, which are already available to users, have brought with them a number of fixes. Most of them are aimed at fixing bugs, as well as improving the security of the operating system.
In the update, Apple fixed ten serious vulnerabilities, some of which were exploited by hackers.
What’s fixed in iOS 15.3 and iPadOS 15.3
The ability to run arbitrary code when opening a malicious image has been fixed.
Implemented improved checking of changes made to the system. It prevents applications with malicious code from gaining administrator rights.
Restricted third-party apps’ access to iCloud storage addresses.
Added additional input validation. It prevents malicious applications from executing arbitrary code with kernel privileges.
Improved memory control mechanisms to prevent buffer overflows.
Improved input-output model management. This prevents arbitrary code from executing when processing a malicious STL file.
Improved memory management mechanisms to reduce the chance of malicious code executing while browsing the web.
Fixed a bug that interfered with the security system.
- Webkit storage
An issue that allowed third-party resources to access browsing history has been resolved.
A source: Apple