CVE-2022-20283 in Android
Summary
by MITRE • 08/12/2022
In Bluetooth, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution over Bluetooth with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-233069336
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Analysis
by VulDB Data Team • 08/12/2022
The vulnerability identified as CVE-2022-20283 represents a critical security flaw within the Bluetooth implementation of Android 13 systems, specifically manifesting as an out-of-bounds write condition caused by integer overflow. This vulnerability exists within the Bluetooth subsystem and demonstrates a fundamental flaw in how the system handles certain data structures during Bluetooth communication processes. The integer overflow occurs when processing Bluetooth packets or data structures that exceed the maximum value that can be represented by the integer type, leading to unexpected behavior in memory allocation and data handling. The flaw is particularly concerning because it enables remote code execution without requiring any additional privileges or user interaction, making it highly exploitable in real-world scenarios.
The technical nature of this vulnerability places it squarely within the scope of CWE-190, which specifically addresses integer overflow conditions that can result in out-of-bounds writes. This classification indicates that the vulnerability stems from improper handling of integer arithmetic operations where the result exceeds the maximum value that can be stored in the target data type. The exploitation pathway involves sending specially crafted Bluetooth packets that trigger the integer overflow condition, which then leads to memory corruption and potentially arbitrary code execution. The vulnerability's remote exploitability means that an attacker does not need physical access to the device or any form of user interaction to initiate the attack, as the flaw can be triggered through Bluetooth communication alone.
From an operational impact perspective, this vulnerability poses significant risks to Android 13 devices since Bluetooth is a fundamental component of modern smartphones and tablets. The ability to achieve remote code execution through Bluetooth communication means that attackers can potentially take full control of affected devices from a distance. This capability aligns with ATT&CK technique T1041, which covers Exfiltration Over C2 Channel, and T1059, which covers Command and Scripting Interpreter, as the successful exploitation would enable attackers to execute arbitrary commands and potentially exfiltrate data. The vulnerability affects the core Bluetooth stack functionality, which means that any device with Bluetooth capabilities running Android 13 is potentially at risk, including smartphones, tablets, smartwatches, and other IoT devices that rely on Bluetooth connectivity.
The mitigation strategies for CVE-2022-20283 primarily focus on applying the security patches released by Google as part of the Android security updates. Organizations and users should immediately install the latest security patches to address this vulnerability. Additionally, implementing network segmentation and monitoring Bluetooth traffic can help detect potential exploitation attempts. The vulnerability's design flaw suggests that it may be difficult to implement effective workarounds, as it resides in the core Bluetooth implementation. Security teams should also consider disabling Bluetooth when not in use and implementing strict Bluetooth device pairing protocols to reduce the attack surface. The patching process should be prioritized at the enterprise level, as this vulnerability could be leveraged for persistent access to corporate networks through Bluetooth-enabled devices.