Apple macOS libATSServer Heap-based Buffer Overflow Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on vulnerable installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the FODBWriteToAnnex method. The issue lies in the failure to properly validate the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user.