CVE-2022-20433 in Android
Summary
by MITRE • 10/12/2022
There is an missing authorization issue in the system service. Since the component does not have permission check , resulting in Local Elevation of privilege.Product: AndroidVersions: Android SoCAndroid ID: A-242221901
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Analysis
by VulDB Data Team • 04/14/2026
This vulnerability represents a critical authorization flaw in Android system services that enables local privilege escalation through missing permission checks. The issue affects Android System-on-Chip implementations and was identified with Android ID A-242221901, highlighting a fundamental security gap in the operating system's access control mechanisms. The vulnerability exists within system service components that fail to properly validate user permissions before executing privileged operations, creating an exploitable path for malicious actors to elevate their privileges locally.
The technical flaw stems from insufficient authorization validation within the affected system services, where the component lacks proper permission verification before processing sensitive requests. This absence of access control checks allows any local user or process to perform actions that should be restricted to system-level entities or privileged applications. The vulnerability operates at the kernel or system service level, where standard Android security boundaries are bypassed due to the missing permission validation logic. According to CWE-284, this represents an inadequate access control implementation where the system fails to properly enforce authorization policies.
From an operational perspective, this vulnerability poses significant risks to Android device security as it enables local privilege escalation without requiring external network access or complex exploitation techniques. An attacker with local access to a device can leverage this flaw to gain elevated privileges, potentially accessing sensitive system resources, modifying critical files, or disabling security features. The impact extends beyond simple privilege escalation as it can enable further exploitation paths, including potential remote code execution or data exfiltration capabilities. The vulnerability affects the integrity and confidentiality of the Android system, as unauthorized access to privileged system functions undermines the entire security model.
The mitigation strategies for this vulnerability should focus on implementing robust permission checks within system services and ensuring proper access control validation. Android security patches should enforce mandatory access controls, validate all incoming requests against appropriate permission sets, and establish clear privilege boundaries. System administrators should prioritize applying security updates immediately upon release, as this vulnerability can be exploited by malicious applications or compromised local processes. Organizations should also implement monitoring solutions to detect unauthorized privilege escalation attempts and establish proper security auditing procedures to identify potential exploitation of similar authorization flaws. This vulnerability aligns with ATT&CK technique T1068 which involves privilege escalation through local system exploitation, emphasizing the need for comprehensive access control implementations. The affected Android SoC implementations require immediate security hardening to prevent exploitation of this authorization bypass mechanism that could compromise entire device ecosystems.