CVE-2022-22665 in macOS
Summary
by MITRE • 03/18/2022
A logic issue was addressed with improved validation. This issue is fixed in macOS Monterey 12.3. A malicious application may be able to gain root privileges.
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Analysis
by VulDB Data Team • 03/18/2022
This vulnerability represents a critical privilege escalation flaw that existed within the macOS Monterey 12.3 operating system, specifically affecting the system's validation mechanisms. The issue stems from insufficient input validation processes that allowed malicious applications to exploit logical weaknesses in the system's permission model. According to industry standards such as CWE-20, this corresponds to an improper input validation vulnerability where the system failed to adequately verify or sanitize inputs from potentially untrusted sources. The flaw enabled adversaries to craft malicious applications that could bypass normal security boundaries and elevate their privileges to the root level, which represents the highest possible system access.
The technical implementation of this vulnerability likely involved exploiting race conditions or insufficient boundary checks within the kernel's privilege validation routines. Attackers could leverage this logic flaw by developing applications that manipulated system calls or kernel interfaces in ways that the original validation code did not anticipate or properly prevent. The root privilege escalation capability means that once successfully exploited, malicious actors could gain complete control over the affected system, potentially accessing all user data, modifying system files, installing additional malware, and maintaining persistent access. This type of vulnerability directly maps to ATT&CK technique T1068 which covers 'Local Privilege Escalation' through various methods including kernel exploits and logic flaws.
The operational impact of this vulnerability extends beyond individual system compromise to potentially affect entire network infrastructures where macOS systems serve as endpoints or servers. Organizations running affected versions of macOS Monterey faced significant risk exposure, particularly in environments where administrative privileges were not properly restricted or where users had the ability to install applications. The fix implemented by Apple in version 12.3 addressed the underlying validation logic, likely through enhanced input sanitization and more robust privilege checking mechanisms within the operating system's core components. System administrators should prioritize immediate deployment of this update across all affected macOS systems to mitigate the risk of exploitation.
Mitigation strategies beyond patching include implementing strict application control policies using tools like Apple's Gatekeeper or third-party endpoint protection solutions that can prevent installation of untrusted applications. Network segmentation and privilege separation practices should be reinforced to limit the potential damage from any successful exploitation attempts. Security monitoring should focus on detecting unusual process execution patterns or unauthorized system modifications that might indicate exploitation attempts. Organizations should also conduct regular vulnerability assessments targeting macOS systems to identify other potential weaknesses in their security posture, particularly focusing on kernel-level vulnerabilities that could provide similar privilege escalation capabilities. The remediation process requires thorough testing of updates in controlled environments before widespread deployment to ensure compatibility with existing applications and system configurations.