Apple macOS process_token_CopyPixelsSrcFBO Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability

2020-09-21T00:00:00
ID ZDI-20-1212
Type zdi
Reporter ABC Research s.r.o.
Modified 2020-09-21T00:00:00

Description

This vulnerability allows local attackers to escalate privileges on affected 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 AppleIntelKBLGraphics kernel extension. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.