What is the Difference Between iOS 4.3.3 and iOS 4.3.4?

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The difference between iOS 4.3.3 and iOS 4.3.4 is primarily in the security content and updates. The iOS 4.3.4 software update addresses specific security vulnerabilities and improvements. Some of the key security updates in iOS 4.3.4 include:

  • A fix for a buffer overflow issue in FreeType's handling of TrueType fonts, which could lead to an unexpected application termination when viewing a maliciously crafted PDF file.
  • A fix for a signedness issue in CoreGraphics, which could also lead to an unexpected application termination when viewing a maliciously crafted PDF file.

These security updates are intended to protect users from potential exploits and security threats. Other than these security improvements, there might not be any significant differences between iOS 4.3.3 and iOS 4.3.4 in terms of features or functionality.

Comparative Table: iOS 4.3.3 vs iOS 4.3.4

The main difference between iOS 4.3.3 and iOS 4.3.4 is the fix for a security vulnerability associated with viewing malicious PDF files. Here is a comparison table of the two versions:

Feature iOS 4.3.3 iOS 4.3.4
Security Vulnerability - Viewing malicious PDF files may lead to unexpected application termination or arbitrary code execution
Security Patch - Patched vulnerability for safer browsing
Compatibility iPhone 3GS, iPhone 4 (GSM model), iPod Touch (3rd and 4th generation), iPad iPhone 3GS, iPhone 4 (GSM model), iPod Touch (3rd and 4th generation), iPad
Availability Date - July 18, 2011

iOS 4.3.4 was released to address the security issue present in iOS 4.3.3, making it safer for users to browse and view PDF files without the risk of unexpected application termination or arbitrary code execution.