Internet shortcuts are present in both Windows and macOS systems. Minchan reported the flaw to Apple via the SSD Secure Disclosure program as mentioned in the writeup. 'Originally, inetloc files are shortcuts to an Internet location, such as an RSS feed or a telnet location and contain the server address and possibly a username and password for SSH and telnet connections can be created by typing a URL in a text editor and dragging the text to the Desktop.' 'A vulnerability in the way macOS processes inetloc files causes it to run commands embedded inside, the commands it runs can be local to the macOS allowing the execution of arbitrary commands by the user without any warning / prompts,' explains Minchan. The flaw impacts macOS Big Sur and prior versions. Shortcut files that have the inetloc extension are capable of embedding commands inside.
Independent security researcher Park Minchan has discovered a vulnerability in the macOS that lets threat actors execute commands on your computer. Those shortcut files can take over your Mac And the worst part is, Apple hasn't fully patched it yet, as tested by Ars.
A code execution bug in Apple's macOS allows remote attackers to run arbitrary commands on your device.
