MacOS, iPadOS, and iOS Local Privilege Escalation Vulnerability (CVE-2021-30807)

July 27, 2021

Summary

A software update was released fixing a local privilege escalation vulnerability affecting MacOS, iPadOS, and iOS.  A proof of concept exploit has been publicly released and Apple reports this vulnerability is currently being exploited.

Impact

A vulnerability in the  IOMobileFrameBuffer component can be used to run arbitrary code with kernel privileges.

Vulnerable

  •  MacOS Big Sur 11.5 

  • iPadOS 14.7

  • iOS 14.7

Recommendations

  •  Upgrade to the latest version of your operating system immediately. (MacOS Big Sur 11.5.1, iPadOS 14.7.1, or iOS 14.7.1)

References