CVE-2022-42850 in iOS
Summary
by MITRE • 12/15/2022
The issue was addressed with improved memory handling. This issue is fixed in iOS 16.2 and iPadOS 16.2. An app may be able to execute arbitrary code with kernel privileges.
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Analysis
by VulDB Data Team • 04/21/2025
The vulnerability identified as CVE-2022-42850 represents a critical kernel-level security flaw in Apple's iOS and iPadOS operating systems. This issue stems from inadequate memory handling mechanisms within the kernel space, creating a potential pathway for malicious applications to escalate their privileges and execute arbitrary code with the highest level of system access. The vulnerability affects versions prior to iOS 16.2 and iPadOS 16.2, making it a significant concern for users of older system versions. The flaw falls under the category of kernel exploitation vulnerabilities that can fundamentally compromise system integrity and security posture. The memory handling improvements implemented in the subsequent releases address the root cause of this privilege escalation vector.
The technical nature of this vulnerability aligns with common kernel exploitation patterns where improper memory management creates opportunities for attackers to manipulate kernel data structures or execute malicious code within kernel space. This type of flaw typically involves buffer overflows, use-after-free conditions, or improper memory allocation handling that can be leveraged by malicious applications to gain unauthorized access to kernel-level functions. The vulnerability's classification connects to CWE-119 which deals with "Improper Access to Memory" and CWE-20 which addresses "Improper Input Validation" in kernel contexts. From an operational perspective, this vulnerability represents a severe threat to device security as it allows an app to bypass normal privilege restrictions and execute code with kernel-level privileges, effectively granting complete system control to the malicious application.
The operational impact of CVE-2022-42850 extends beyond individual device compromise to potentially enable large-scale attacks and persistent system infiltration. Attackers could exploit this vulnerability to install rootkits, modify system files, disable security features, or establish persistent backdoors within affected devices. The privilege escalation capability means that once an attacker gains initial access through a malicious application, they can operate at the kernel level where normal security controls become ineffective. This vulnerability also represents a significant concern for enterprise environments where mobile device security is paramount, as it could enable attackers to compromise corporate devices and potentially access sensitive organizational data. The ATT&CK framework categorizes this type of vulnerability under T1068 "Exploitation for Privilege Escalation" and potentially T1543 "Create or Modify System Process" when exploited for persistent access.
Mitigation strategies for CVE-2022-42850 primarily focus on immediate system updates to iOS 16.2 and iPadOS 16.2, which contain the necessary memory handling improvements to address the vulnerability. Organizations should prioritize deployment of these security updates across all affected devices and implement comprehensive monitoring to detect any potential exploitation attempts. Additional defensive measures include maintaining strict app vetting processes, implementing mobile device management solutions with security monitoring capabilities, and conducting regular security assessments of mobile environments. Security teams should also consider deploying network-based intrusion detection systems that can identify suspicious behavior patterns associated with privilege escalation attempts. The vulnerability highlights the importance of timely patch management and continuous security monitoring in maintaining robust mobile device security postures.