CVE-2024-32894 in Android
Summary
by MITRE • 06/14/2024
In bc_get_converted_received_bearer of bc_utilities.c, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 07/11/2024
The vulnerability identified as CVE-2024-32894 represents a critical out-of-bounds read condition within the bc_utilities.c source file, specifically within the bc_get_converted_received_bearer function. This flaw stems from the absence of proper bounds checking mechanisms that should validate array or buffer access limits before data retrieval operations occur. The implementation fails to verify that memory access operations remain within allocated boundaries, creating a potential pathway for unauthorized data exposure.
This vulnerability operates at the intersection of memory safety and data integrity concerns, classified under CWE-129 as improper validation of array index. The flaw exists in the boundary checking logic where the system does not adequately validate input parameters or buffer dimensions before processing received bearer data. The absence of such validation allows malicious actors to potentially manipulate input data to trigger memory access violations that could expose sensitive information stored in adjacent memory regions.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables remote exploitation without requiring any additional privileges or user interaction. This characteristic places the vulnerability in a particularly dangerous category from a security perspective, as it can be leveraged by attackers without the need for authentication or direct user engagement. The remote exploitation capability means that threat actors can potentially access system memory contents, configuration data, or other sensitive information from distant locations.
The implications of this vulnerability align with ATT&CK technique T1005 which focuses on data from local system. Attackers could potentially extract memory contents, session tokens, or other sensitive data structures that might contain authentication credentials, system configuration details, or proprietary information. The lack of user interaction requirement makes this vulnerability particularly concerning as it can be exploited automatically without any human intervention, allowing for rapid and widespread information gathering.
Mitigation strategies for CVE-2024-32894 should focus on implementing comprehensive bounds checking mechanisms throughout the affected codebase. The primary solution involves adding proper input validation and array boundary verification before any memory access operations occur. Developers should implement defensive programming practices including buffer length validation, use of safe string handling functions, and regular code reviews focusing on memory access patterns. Additionally, employing static analysis tools and runtime protections such as address space layout randomization can help reduce the exploitability of such vulnerabilities.
The vulnerability demonstrates the critical importance of memory safety in software development practices and aligns with industry standards for secure coding. Organizations should prioritize patch management for affected systems and implement monitoring solutions to detect potential exploitation attempts. Regular security assessments and code audits focusing on memory handling patterns can help identify similar vulnerabilities before they can be exploited by malicious actors. The incident underscores the necessity of comprehensive testing methodologies including fuzzing and boundary condition testing to identify potential out-of-bounds access scenarios in software implementations.