CVE-2023-30686 in Smart Phone
Summary
by MITRE • 08/10/2023
Out-of-bounds Write in ReqDataRaw of libsec-ril prior to SMR Aug-2023 Release 1 allows local attacker to execute arbitrary code.
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Analysis
by VulDB Data Team • 09/05/2023
The vulnerability identified as CVE-2023-30686 represents a critical out-of-bounds write flaw within the libsec-ril library component of mobile device firmware systems. This issue affects devices prior to the SMR August 2023 security release and specifically impacts the ReqDataRaw function where improper input validation leads to memory corruption. The vulnerability exists in the underlying security communication framework that handles raw data requests within the radio interface layer of mobile devices. Such flaws typically arise when developers fail to properly validate array indices or buffer boundaries before writing data to memory locations, creating opportunities for malicious code injection.
The technical exploitation of this vulnerability occurs through local attacker access within the device's security subsystem. When the ReqDataRaw function processes incoming data requests without adequate bounds checking, an attacker can craft malicious input that overflows memory buffers and potentially overwrites adjacent memory regions. This memory corruption can lead to arbitrary code execution with the privileges of the affected process, which in many cases corresponds to the security subsystem or privileged firmware components. The out-of-bounds write condition specifically targets the memory layout of the libsec-ril library, which operates at a low level within the device's communication stack and handles sensitive security protocols.
The operational impact of this vulnerability extends beyond simple code execution to encompass potential system compromise and data breach scenarios. Local attackers with physical access or those who have already gained some level of system access can leverage this flaw to escalate privileges and gain deeper control over the device's security functions. The vulnerability affects the integrity of the device's security infrastructure, potentially allowing attackers to bypass authentication mechanisms, intercept encrypted communications, or manipulate security policies. This represents a significant risk to device confidentiality, integrity, and availability, particularly in enterprise environments where mobile devices handle sensitive corporate data.
Mitigation strategies for CVE-2023-30686 primarily involve applying the vendor-provided security patches released in the SMR August 2023 update cycle. Organizations should prioritize immediate deployment of these patches across all affected device fleets to eliminate the vulnerability exposure. Additionally, security teams should implement network monitoring to detect potential exploitation attempts and establish incident response procedures for handling potential compromise scenarios. The vulnerability aligns with CWE-787 Out-of-bounds Write, which specifically addresses memory corruption issues stemming from improper bounds checking in array operations. From an attack framework perspective, this vulnerability maps to ATT&CK technique T1059.007 Command and Scripting Interpreter: PowerShell, as attackers may utilize PowerShell or similar scripting capabilities to exploit the memory corruption and execute malicious payloads within the device's security subsystem.