macOS Big Sur 11.4 Addresses Vulnerability That Could Let Attackers Take Secret Screenshots
macOS Big Sur 11.4, which was released this morning, addresses a zero-day vulnerability that could allow attackers to piggyback off of apps like Zoom, taking secret screenshots and surrepetiously recording the screen.

Jamf, a mobile device management company, today highlighted a security issue that allowed Privacy preferences to be bypassed, providing an attacker with Full Disk Access, Screen Recording, and other permissions without a user's consent.
The bypass was actively exploited in the wild, and was discovered by Jamf when analyzing XCSSET malware. The XCSSET malware has been out in the wild since 2020, but Jamf noticed an uptick in recent activity and discovered a new variant.
Once installed on a victim's system, the malware was used specifically for taking screenshots of the user's desktop with no additional permissions required. Jamf said that it could be used to bypass other permissions as well, as long as the donor application the malware piggybacked off of had that permission enabled.
Jamf has a full rundown on how the exploit worked, and the company says that Apple addressed the vulnerability in macOS Big Sur 11.4, Apple confirmed to TechCrunch that a fix has indeed been enabled in macOS 11.4, so Mac users should update their software as soon as possible.
Popular Stories
iOS 17.2 has been in beta testing for over a month, and it should be released to all users in a few more weeks. The software update includes many new features and changes for iPhones, including the dozen that we have highlighted below. iOS 17.2 is expected to be released to the public in mid-December. To learn about even more features coming in the update, check out our full list. Journal ...
Unidentified governments are surveilling smartphone users by tracking push notifications that move through Google's and Apple's servers, a US senator warned on Wednesday (via Reuters). In a letter to the Department of Justice, Senator Ron Wyden said foreign officials were demanding the data from the tech giants to track smartphones. The traffic flowing from apps that send push notifications...
Apple today released new firmware update for both the Lightning and USB-C versions of the AirPods Pro 2. The new firmware is version 6B34, up from the 6B32 firmware introduced in November. Apple does not provide details on what features might be included in the refreshed firmware beyond "bug fixes and other improvements," so it is unclear what's new in the update, but prior software releases ...
The iOS 17.2 update that Apple is set to release to the public in the near future will bring support for the next-generation Qi2 wireless charging standard to the iPhone 13 and iPhone 14 models. Qi2 was mentioned in the release notes for the RC version of the update that came out today. With the addition of support for the new standard, iPhone 13 and iPhone 14 models will work with Qi2...
Apple's Korean suppliers have begun developing smartphone under-display cameras (UDC), paving the way for the first iPhone with a true "all-screen" appearance. According to The Elec, LG Innotek has entered the preliminary development of the UDC, which sits under the display and does not result in a visible hole in the panel when the camera is not in use. A UDC differs from a typical front ...
Recently, MacRumors has received details on the battery currently being tested on the upcoming fourth-generation iPhone SE, and the information corroborates previous findings in relation to the device. The iPhone SE 4, known by its device identifier D59, is expected to use the exact same battery found in the base model iPhone 14. Partially assembled prototypes of the next iPhone SE have been ...
Today we're tracking a collection of deals that are matching - or nearly matching - the same all-time low discounts we saw during Black Friday. This includes the AirPods Pro 2 with USB-C, 9th generation iPad, and M1 MacBook Air. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the ...
Meta has revealed plans to end Instagram users' ability to chat with Facebook accounts later this month, rolling back a feature that it introduced over three years ago. In September 2020, Meta (then Facebook) announced it was merging its Facebook Messenger service with Instagram direct messaging, allowing Instagram users to chat with Facebook users and vice versa using the same platform....
Top Rated Comments
PSA: The SSD disk write issues have been fixed in 11.4 which came out today. The person who found the issue in first place says it was a result of a kernel bug and he also says 11.4 addresses the issue.
Update to 11.4 if your on M1 macs.
Users on this thread also report lower disk writes on 11.4.
[MEDIA=twitter]1396374313591140357[/MEDIA]