CVE-2023-30652 in Smart Phone
Summary
by MITRE • 07/06/2023
Out of bounds read and write in callrunTspCmdNoRead of sysinput HAL service prior to SMR Jul-2023 Release 1 allows local attackers to execute arbitrary code.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 07/24/2023
The vulnerability identified as CVE-2023-30652 represents a critical security flaw within the sysinput HAL service component of Android systems prior to the SMR July 2023 security release. This issue manifests as out-of-bounds read and write conditions that occur within the callrunTspCmdNoRead function, creating a pathway for local attackers to escalate privileges and execute arbitrary code on affected devices. The vulnerability specifically affects the system input handling mechanisms that manage touch screen processor commands, making it particularly dangerous as it operates at a low system level where privilege escalation can lead to complete system compromise.
The technical implementation of this flaw involves improper bounds checking within the callrunTspCmdNoRead function, which processes touch screen commands without adequate validation of input parameters. This function operates within the hardware abstraction layer where it interfaces directly with system input devices, making it a critical attack surface for privilege escalation. When malicious input is processed through this function, the lack of proper boundary validation allows attackers to manipulate memory locations beyond the intended buffer boundaries, enabling both read and write operations that can be leveraged for code execution. This vulnerability falls under the CWE-129 category of Improper Validation of Array Index, while also demonstrating characteristics of CWE-787 Out-of-bounds Write and CWE-125 Out-of-bounds Read, making it a multi-faceted memory corruption vulnerability.
The operational impact of CVE-2023-30652 is severe as it allows local attackers to gain elevated privileges without requiring user interaction or external network access. Attackers can exploit this vulnerability through a local application or service that has access to the sysinput HAL service, potentially leveraging it to execute malicious code with system-level privileges. This capability aligns with ATT&CK technique T1068 for Local Privilege Escalation and T1059 for Command and Scripting Interpreter, as the vulnerability enables attackers to execute arbitrary commands through the compromised system input processing chain. The attack surface is particularly concerning as it affects the foundational system input handling mechanisms that are critical to device functionality, meaning that exploitation could lead to complete system compromise including data exfiltration, persistent backdoor installation, and unauthorized access to sensitive system resources.
Mitigation strategies for CVE-2023-30652 primarily focus on applying the security patches released in the SMR July 2023 updates, which include proper bounds checking mechanisms and memory validation routines within the callrunTspCmdNoRead function. System administrators and device manufacturers should prioritize immediate deployment of these patches across all affected Android devices, particularly those in enterprise environments or handling sensitive data. Additional defensive measures include implementing application sandboxing to limit access to system input services, monitoring for suspicious memory access patterns, and conducting regular security audits of system services that interact with hardware abstraction layers. Organizations should also consider implementing runtime protection mechanisms that can detect and prevent out-of-bounds memory operations, as well as establishing incident response procedures specifically designed to handle privilege escalation vulnerabilities within system-level components. The vulnerability demonstrates the critical importance of proper input validation and bounds checking in system-level code, particularly within hardware abstraction layers where memory corruption can have the most severe consequences for overall system security.