macOS Big Sur Update 11.2.3 available - the most important things in a nutshell

macOS Big Sur 11.2.3 update

With a size of 3,4 GB, Apple made the next update available for the Mac less than two weeks after the update from macOS 11.2.2. The reason why this happens so quickly is probably the security hole that will be closed with the new macOS update.

Big Sur's update to macOS 11.2.3 is above all a security update that fills a gap in Webkit.

Big Sur's update to macOS 11.2.3 is above all a security update that fills a gap in Webkit.

"Important security update" for all Mac users

Apple itself describes macOS Big Sur 11.2.3 as an "important security update" and recommends it to all users who have installed macOS Big Sur on their Mac.

The main aim here is to iron out a security gap that made it possible to attack browsers by making certain web content available. This led to a memory corruption and then allowed any scripts to be run on the Mac (if I understood it correctly with my technical knowledge). Details can be found on an Apple support site called HT212220.

W

  • 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
With a size of over 3 GB and an installation time of approx. 45 minutes, the security update is not even done quickly on the side.

With a size of over 3 GB and an installation time of approx. 45 minutes, the security update is not even done quickly on the side.

Over 3 GB not just for Safari

Many users complain in forums about an update of over 3 gigabytes that obviously only updates the Apple browser Safari. In fact, other components are also brought up to date. For example Javascript, ImageIO, various frameworks and also graphics card drivers for Apple and Intel GPUs. This can quickly add up to 3 gigabytes.

For me, everything continued to run normally after the macOS update to 11.2.3 - so there is no reason to hesitate.

For me, everything continued to run normally after the macOS update to 11.2.3 - so there is no reason to hesitate.

Problems after the update? Not at my place…

I just installed the update a few days after it was released. The process took about 1 minutes including loading on my MacBook Pro M45 and then the MacBook Pro wanted to restart.

So far, I haven't noticed any strange behavior after the update. So, from my point of view, I would say: You can do the update. However, to be on the safe side, you should always have a backup available - just in case something should go wrong in the process.

As a rule, however, there are no bad things to worry about with such point-to-point updates. They tend to happen with major updates, such as from Catalina to Big Sur or similar upgrades.

-
 

12 comments

  1. Froyo52 says:

    The publication already took place on March 08.03.2021th, XNUMX, so the message is already "very old".

    • Jens Kleinholz says:

      I think there are quite a few users like me who don't install everything right away. And before I write a two-sentence article just pointing out that Apple has released a new update, I'd rather wait a few days and then write about how things went for me and whether I've heard of any problems. If you find it uninteresting, you don't have to read it. :-P

  2. Erich says:

    Don't grieve or get angry, Jens!

    There are clever eggs in every forum, always and everywhere!

    Stay healthy and greetings!

    Erich

    • Jens Kleinholz says:

      No no, I don't take it personally and I don't think Froyo meant it badly either. I could certainly be faster with some "news", but there are already enough "news" portals and I like to write something personal about them. That's why it sometimes takes a few days longer for me ... if you always want to get the latest news right away, my blog is probably not in good hands. : D

  3. Jürgen Schmitt says:

    Jens Kleinholz is absolutely right. Not every user implements new things immediately.
    That's why I'm reading this "newsletter" right now.
    So: Sir Apfelot, keep it up! (There are always know-it-alls and wise guys)

  4. Werner Vetter says:

    If there hasn't been an update problem so far, maybe there is one now. After loading the update I always get the following message:
    There was an error loading the selected updates. Check your internet connection and try again.
    Internet connection is available. After the first attempt a message came up that a file (no name) could not be loaded and then the aforementioned message. After further attempts, only the aforementioned message came up. What could it be?

    • Jens Kleinholz says:

      Hello Werner! That's one thing that can happen with every update. The message indicates that your internet connection is too unstable to download the update. I would try connecting the Mac directly to the router with a network cable. Otherwise maybe start in safe mode and start the update again.

  5. Werner Vetter says:

    Hi Jens,
    Thank you for your quick answer. I've now tried both. After he has finished the download, the message "Prepare for installation approx. 15 minutes" appears. Then the message mentioned at the beginning appears again.

    • Jens Kleinholz says:

      Hello Werner! Oh, that's weird. :( I read it again. It could be that there is not enough space on the hard disk. They want at least 50 GB of free disk space for the installation. If it is not, you can try a restart with CMD + R pressed and Reinstall macOS Big Sur. Then it irons the current system again, but does not delete any of your data. Perhaps you can check / test these two points again.

      • Werner Vetter says:

        Thank you Jens! Disk space wasn't the problem (fairly new machine). Your tip with "iron on again" worked. It's nice when you can fall back on competent advisors.
        Best regards from Regensburg
        Werner

        • Jens Kleinholz says:

          Hello Werner! It's great that we managed to do it. I think I have to write another article about "ironing over" ... it helps so often and is so rarely recommended as a tip. : D

          • Werner Vetter says:

            That's a great idea. Besides me there are certainly more lay users who do not know what to do and Mr. google did not give me a hit either. So you were the penultimate hope for me before I had to turn to apple.

Leave a Comment

Your e-mail address will not be published. Required fields are marked with * .