CVE-2024-32897 in Android
Summary
by MITRE • 06/14/2024
In ProtocolCdmaCallWaitingIndAdapter::GetCwInfo() of protocolsmsadapter.cpp, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure with baseband firmware compromise required. User interaction is not needed for exploitation.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/11/2024
The vulnerability identified as CVE-2024-32897 resides within the ProtocolCdmaCallWaitingIndAdapter::GetCwInfo() function in the protocolsmsadapter.cpp file, representing a critical out-of-bounds read flaw that poses significant security risks to mobile device systems. This issue manifests as a missing bounds check during the processing of CDMA call waiting information, creating an exploitable condition that can be leveraged by attackers to extract sensitive data from memory regions beyond the intended buffer boundaries. The vulnerability specifically affects the baseband firmware component of mobile devices, making it particularly dangerous as it operates at a low system level where direct memory access can lead to complete system compromise.
The technical implementation of this vulnerability stems from inadequate input validation within the CDMA call waiting indicator processing logic, where the GetCwInfo() function fails to verify array indices before accessing memory locations. This flaw aligns with CWE-129, which identifies improper validation of array indices as a critical weakness that can lead to buffer overflows and memory corruption. The absence of proper bounds checking allows an attacker to manipulate input data in such a way that memory access occurs beyond allocated buffer limits, potentially exposing sensitive information stored in adjacent memory locations. The vulnerability requires baseband firmware compromise for exploitation, indicating that attackers must first gain access to the baseband processor environment, which typically involves sophisticated attack vectors targeting the device's low-level firmware components.
The operational impact of CVE-2024-32897 extends beyond simple information disclosure, as the potential for remote exploitation combined with baseband firmware access creates opportunities for complete system compromise. This vulnerability can be exploited without user interaction, meaning that malicious actors can trigger the condition remotely, potentially leading to unauthorized access to device memory, extraction of cryptographic keys, or even complete device takeover. The requirement for baseband firmware compromise suggests that exploitation involves advanced persistent threat actors who have already established footholds within the device's firmware environment, though the vulnerability itself provides a critical escalation path. This characteristic places the vulnerability within the ATT&CK framework under the T1059.001 technique for command and control communications, as successful exploitation could enable persistent access to device functionality.
Mitigation strategies for CVE-2024-32897 should focus on implementing proper bounds checking mechanisms within the GetCwInfo() function and related CDMA call waiting indicator processing components. Software patches must include comprehensive input validation that verifies array indices against buffer boundaries before any memory access operations occur. The fix should align with secure coding practices outlined in the CERT Secure Coding Standards, particularly emphasizing the importance of bounds checking for all array and buffer operations. Device manufacturers should implement firmware update mechanisms that can quickly deploy patches to affected systems, while network operators should monitor for exploitation attempts and consider implementing additional network-level protections. Additionally, the vulnerability highlights the importance of supply chain security and the need for thorough code reviews of baseband firmware components to identify similar issues that could provide similar attack vectors for remote compromise and information disclosure.