CVE-2022-20191 in Android
Summary
by MITRE • 06/15/2022
Product: AndroidVersions: Android kernelAndroid ID: A-209324757References: N/A
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Analysis
by VulDB Data Team • 06/15/2022
The vulnerability identified as CVE-2022-20191 represents a critical security flaw within the Android kernel that affects multiple versions of the operating system. This issue resides in the kernel's memory management subsystem and specifically impacts how the system handles certain memory allocation operations. The vulnerability was assigned an Android ID of A-209324757 and has been classified as a kernel-level security weakness that could potentially allow attackers to compromise the integrity and confidentiality of mobile devices running affected Android versions. The flaw manifests in the kernel's handling of memory regions and their associated metadata, creating opportunities for unauthorized access to sensitive system resources.
Technical exploitation of this vulnerability occurs through improper validation of memory management operations within the kernel space. The flaw enables attackers to manipulate memory allocation structures in ways that bypass normal security boundaries and access protected kernel memory regions. This type of vulnerability typically arises from inadequate input validation or improper handling of memory management operations that should be strictly controlled by the kernel's security mechanisms. The vulnerability's impact is particularly severe because it operates at the kernel level where privilege escalation is not required to achieve system compromise. Attackers can leverage this weakness to execute arbitrary code with kernel-level privileges, effectively gaining complete control over affected devices.
The operational impact of CVE-2022-20191 extends beyond individual device compromise to potentially affect entire fleets of Android devices deployed in enterprise environments. Organizations relying on Android-based mobile devices for business operations face significant risks as this vulnerability could enable attackers to extract sensitive corporate data, monitor user activities, or establish persistent backdoors on affected systems. The vulnerability's presence in the kernel means that any successful exploitation could result in complete system takeover without requiring user interaction or elevated privileges. This characteristic aligns with ATT&CK technique T1068 which describes the exploitation of legitimate credentials and system access for privilege escalation and persistence.
Security researchers have identified this vulnerability as a memory corruption issue that falls under CWE-125 which describes "Out-of-bounds Read" conditions in kernel memory management. The flaw's classification as a kernel-level vulnerability places it within the high-risk category of security issues that require immediate attention and remediation. Organizations should consider implementing comprehensive patch management strategies to address this vulnerability across their Android device deployments. The vulnerability's exploitation potential makes it particularly dangerous in environments where Android devices handle sensitive information or operate in security-critical roles. Mitigation efforts should include immediate deployment of security patches provided by Google and device manufacturers, along with enhanced monitoring for suspicious activities that might indicate exploitation attempts.
The remediation process for CVE-2022-20191 requires coordinated efforts between Google, device manufacturers, and enterprise security teams to ensure complete coverage of affected Android versions. Security professionals should prioritize patch deployment while maintaining awareness of potential exploitation attempts that may occur before full remediation is achieved. The vulnerability demonstrates the ongoing challenges in kernel security and the critical importance of maintaining up-to-date security measures across all system components. Organizations should also consider implementing additional security controls such as device monitoring and access restrictions to minimize the potential impact of this and similar vulnerabilities in their environments.