CVE-2022-20325 in Android
Summary
by MITRE • 08/12/2022
In Media, there is a possible code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-186473060
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Analysis
by VulDB Data Team • 09/10/2022
The vulnerability identified as CVE-2022-20325 resides within the media subsystem of Android 13 operating systems, representing a critical use after free condition that presents significant security implications. This flaw manifests in the media processing components where improper memory management allows for potential code execution attacks. The vulnerability is particularly concerning because it can be exploited to achieve local privilege escalation without requiring any additional execution privileges or user interaction, making it highly dangerous in both malicious and accidental exploitation scenarios.
The technical root cause of this vulnerability stems from improper memory deallocation practices within the media processing pipeline where freed memory blocks are still being referenced or accessed by subsequent operations. This use after free condition creates a memory corruption vulnerability that attackers can potentially leverage to execute arbitrary code with elevated privileges. The flaw exists in the Android media framework's handling of multimedia content processing, where memory allocated for media buffers or processing structures is freed but subsequently accessed by the same or related processes, leading to unpredictable behavior and potential code execution.
The operational impact of CVE-2022-20325 extends beyond simple privilege escalation as it represents a critical weakness in Android's security model that could allow attackers to gain full system control. The absence of user interaction requirements makes this vulnerability particularly dangerous as it can be exploited automatically without requiring social engineering or user deception tactics. This characteristic aligns with ATT&CK technique T1068 which covers 'Local Privilege Escalation' and represents a direct pathway for attackers to elevate their privileges within the Android environment. The vulnerability affects Android 13 specifically, indicating that the memory management issues were introduced or became exploitable in this version of the operating system.
From a cybersecurity perspective, this vulnerability directly relates to CWE-416 which defines "Use After Free" conditions as a critical weakness in software security. The flaw demonstrates how improper memory management can create persistent security risks that remain exploitable until properly patched. The Android ID A-186473060 indicates this vulnerability was properly tracked and documented within Google's security reporting system, emphasizing the severity and recognition of the threat. Organizations deploying Android 13 devices face immediate risk as this vulnerability can be exploited to gain root access to devices, potentially compromising all user data and system integrity.
The mitigation strategy for CVE-2022-20325 requires immediate deployment of the relevant Android security patches provided by Google through their regular security updates. System administrators should prioritize updating all Android 13 devices to the latest security patch level to eliminate this vulnerability. Additionally, organizations should implement network monitoring to detect potential exploitation attempts and consider temporary network isolation of affected devices until patches are deployed. The vulnerability's nature as a use after free condition makes it particularly resistant to traditional exploit mitigation techniques, emphasizing the importance of timely patch management and the need for robust vulnerability assessment processes to identify and remediate similar memory management issues across the Android ecosystem.