Apple macOS PackageKit PKInstallService Directory Traversal System Integrity Protection Bypass Vulnerability
Vulnerability Details
This vulnerability allows local attackers to bypass System Integrity Protection 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 PackageKit. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to escalate privileges and delete files normally protected from the user.
Additional Details
Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/en-us/HT213054
Disclosure Timeline
- 2021-12-03 - Vulnerability reported to vendor
- 2022-06-29 - Coordinated public release of advisory
Credit
Mickey Jin (@patch1t) of Trend Micro
