Tag Archives: macOS Big Sur

macOS, iOS, iPadOS, Safari CVE-2021-1844 Bug : Fix It Now!

macOS, iOS, iPadOS, Safari CVE-2021-1844 Bug : Fix It Now!

Apple just rushed out macOS Big Sur 11.2.3, iOS 14.4.1, iPadOS 14.4.1 and Safari 14.0.3 to patch a critical security bug.

Find out what they fix, and why you need to update your MacBook, iPhone and iPad right away!

 

Apple Rushes Out macOS, iOS, iPadOS, Safari Critical Bug Fixes!

Released on 8 March 2021, macOS Big Sur 11.2.3 patches only one bug, which may mislead users into thinking that it’s not very important.

WebKit

Available for: macOS Big Sur

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A memory corruption issue was addressed with improved validation.

CVE-2021-1844: Clément Lecigne of Google’s Threat Analysis Group, Alison Huffman of Microsoft Browser Vulnerability Research

On the same day, Apple also released iOS 14.4.1 and iPadOS 14.4.1 – both patching the same CVE-2021-1844 vulnerability.

WebKit

Available for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A memory corruption issue was addressed with improved validation.

CVE-2021-1844: Clément Lecigne of Google’s Threat Analysis Group, Alison Huffman of Microsoft Browser Vulnerability Research

Apple also released Safari 14.0.3, which patches the same vulnerability for macOS Catalina and macOS Mojave :

WebKit

Available for: macOS Catalina and macOS Mojave

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A memory corruption issue was addressed with improved validation.

CVE-2021-1844: Clément Lecigne of Google’s Threat Analysis Group, Alison Huffman of Microsoft Browser Vulnerability Research

 

Why Install These macOS, iOS, iPadOS, Safari Bug Fixes ASAP?

While they appear to only patch WebKit in macOS Big Sur, iOS, iPadOS and Safari, they are CRITICAL bug fixes that you need to install right away.

They patch the new CVE-2021-1844 vulnerability, which was discovered by Clément Lecigne of Google’s Threat Analysis Group and Alison Huffman of Microsoft Browser Vulnerability Research.

This vulnerability allows a remote attacker to trigger a buffer overflow when the victim opens a specially-crafted web page, allowing the attacker to execute arbitrary code on the target system.

It is not known if this vulnerability has been exploited yet, but it is critical to install the new updates to prevent that from happening.

 

Recommended Reading

Go Back To > Software | CybersecurityHome

 

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Apple M1 Gaming : Watch It Run The Witcher 3!

Windows gaming on the ARM-based Apple M1 is possible!

Watch how well the Apple M1 runs The Witcher 3 using CrossOver 20!

 

Apple M1 Gaming : Watch It Run The Witcher 3 On CrossOver 20!

AppleGamers successfully ran The Witcher 3 on CrossOver 20, using the 2020 Apple MacBook Pro with the new ARM-based Apple M1 SoC.

Here was their recorded gameplay of The Witcher 3 at the 1080p resolution, with the Medium graphics and post-processing presets, and VSync enabled.

They could not get the FPS counter to work, but it looks smooth and very playable, albeit with some visual artefacts.

Basically – Apple M1 gaming is not only possible, it is possible to play Windows games!

 

Windows Gaming On Apple M1 : Rosetta 2 + Windows API Translation!

That quick gameplay showcase of The Witcher 3 shows that Windows gaming is possible on the Apple M1.

The ability to run The Witcher 3 on CrossOver 20, and at such playable frame rates, is important for two reasons.

Windows App Compatibility

The Witcher 3 is a 64-bit Windows-only game, so you wouldn’t expect it to run well on the ARM-based Apple M1, right?

Running it on the Apple M1 involves translating Windows API calls using CrossOver, and then translating x86 instructions to ARM instructions using Rossetta 2.

Yet it not only worked, it ran pretty well on the Apple M1!

Performance

While AppleGamers was not able to obtain a frame rate, The Witcher 3 appears to run pretty well at the 1080p resolution.

That shows that the Apple M1’s integrated 8-core GPU is fast, and will have no problem handling native ARM games at 1080p, and likely 1440p as well.

 

Apple M1 : A Quick Primer

The Apple M1 is the first ARM-based SoC (System on a Chip) designed by Apple for use in Mac computers.

Packing 16 billion transistors, it is the first chip to be manufactured on the new 5 nm TSMC process technology.

It comes with 4 high-performance Firestorm CPU cores, 4 power-efficient Icestorm cores, an 8-core GPU, and a 16-core Neural Engine.

As the M1 is based on the ARM architecture, you can natively run iPhone and iPad apps on it. However, existing macOS apps will have to be ported over, or translated on-the-fly using Rosetta 2.

It is currently available in these Apple Mac computers :

  • 2020 MacBook Air : US | UK | AU | MY | SG
  • 2020 MacBook Pro 13-inch : US | UK | AU | MY | SG
  • 2020 Mac mini : US | UK | AU | MY | SG

 

Recommended Reading

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