CVE-2023-52432 in Samsung
Summary
by MITRE • 03/05/2024
Improper input validation in IpcTxSndSetLoopbackCtrl in libsec-ril prior to SMR Sep-2023 Release 1 allows local attackers to write out-of-bounds memory.
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Analysis
by VulDB Data Team • 02/10/2025
The vulnerability identified as CVE-2023-52432 resides within the IpcTxSndSetLoopbackCtrl function of the libsec-ril library, affecting systems prior to the SMR September 2023 security release. This issue represents a critical flaw in input validation mechanisms that enables local attackers to execute out-of-bounds memory writes. The vulnerability specifically impacts the Qualcomm Secure RIL (Radio Interface Layer) component, which serves as a critical interface between the modem and Android framework for cellular communication operations. The affected library operates within the privileged security domain, making it a prime target for attackers seeking to escalate privileges or compromise system integrity.
The technical root cause of this vulnerability stems from inadequate bounds checking during the processing of loopback control parameters within the IpcTxSndSetLoopbackCtrl function. When the system receives input parameters for configuring loopback operations, the validation logic fails to properly verify array boundaries or parameter limits, allowing malicious input to overwrite adjacent memory locations. This improper input validation aligns with CWE-129, which specifically addresses insufficient validation of length of input buffers, and CWE-787, covering out-of-bounds write vulnerabilities. The flaw operates at the kernel level within the security subsystem, where the loopback control functionality is used to configure internal radio communication paths for testing and diagnostic purposes.
From an operational standpoint, this vulnerability presents significant risks to mobile device security and system stability. Local attackers with access to the device can exploit this weakness to execute arbitrary code within the security context of the modem, potentially leading to complete system compromise. The out-of-bounds memory write capability allows for memory corruption that could be leveraged to escalate privileges, bypass security mechanisms, or inject malicious code into critical system processes. The impact extends beyond immediate privilege escalation as the vulnerability affects the underlying communication infrastructure, potentially enabling attackers to manipulate cellular data flows or intercept sensitive communications. This type of vulnerability falls under ATT&CK technique T1068, which covers local privilege escalation, and T1566, covering credential harvesting through system exploitation.
The exploitation of CVE-2023-52432 requires local system access, making it less immediately dangerous than remote exploits but still highly concerning given the privileged nature of the affected component. Attackers would need to have already compromised the device or gained user-level access to leverage this vulnerability effectively. The security implications are particularly severe because the affected library operates within the trusted execution environment of the modem, where it handles sensitive cryptographic operations and secure communication protocols. Mitigation strategies should focus on applying the SMR September 2023 security updates immediately, as these patches address the input validation flaws and implement proper bounds checking mechanisms. Additionally, system administrators should consider implementing runtime monitoring to detect anomalous memory access patterns that might indicate exploitation attempts. The vulnerability underscores the importance of rigorous input validation in security-critical components and demonstrates how seemingly minor flaws in system interfaces can lead to catastrophic security breaches.