CVE-2024-20849 in Samsung
Summary
by MITRE • 04/02/2024
Out-of-bound Write vulnerability in chunk parsing implementation of libsdffextractor prior to SMR Apr-2023 Release 1 allows local attackers to execute arbitrary code.
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Analysis
by VulDB Data Team • 04/02/2024
The vulnerability identified as CVE-2024-20849 represents a critical out-of-bounds write flaw within the chunk parsing functionality of libsdffextractor library. This issue affects versions prior to the SMR Apr-2023 Release 1 and specifically targets local attackers who can exploit this weakness to achieve arbitrary code execution on affected systems. The vulnerability resides in how the library processes and handles chunk data structures during extraction operations, creating a potential pathway for malicious code injection.
The technical implementation of this vulnerability stems from inadequate bounds checking during chunk parsing operations. When the libsdffextractor processes malformed or specially crafted input data, the parsing routine fails to validate array indices or buffer limits before writing data to memory locations. This fundamental flaw allows an attacker to overwrite adjacent memory regions with arbitrary data, potentially corrupting critical program state or injecting executable code. The vulnerability manifests as a classic buffer overflow condition that can be leveraged for privilege escalation and system compromise. According to CWE classification, this represents a CWE-787: Out-of-bounds Write vulnerability, which falls under the broader category of memory safety issues that have historically led to numerous security incidents.
The operational impact of CVE-2024-20849 extends beyond simple code execution capabilities as it provides attackers with a means to gain persistent access to systems running vulnerable versions of the library. Local attackers who can influence the input processed by libsdffextractor can craft malicious chunks that trigger the out-of-bounds write condition, potentially leading to complete system compromise. This vulnerability is particularly concerning because it operates at the library level, meaning that any application or service utilizing libsdffextractor for data extraction purposes becomes vulnerable to exploitation. The attack surface includes any software that relies on this library for processing structured data formats, making the impact widespread across various applications and systems.
Mitigation strategies for CVE-2024-20849 should prioritize immediate patching of affected systems to the SMR Apr-2023 Release 1 or later versions that contain the necessary fixes for the chunk parsing implementation. Organizations should conduct comprehensive inventory assessments to identify all systems utilizing libsdffextractor and prioritize remediation efforts accordingly. Additionally, implementing runtime protections such as address space layout randomization and stack canaries can provide additional defense-in-depth measures against exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to T1059.007: Command and Scripting Interpreter: Python, as exploitation may involve executing malicious code through the compromised library. System administrators should also consider monitoring for unusual file processing patterns or memory access violations that could indicate exploitation attempts. The vulnerability demonstrates the importance of proper input validation and bounds checking in security-critical libraries, aligning with defensive practices outlined in the OWASP Top Ten and other security standards that emphasize secure coding practices to prevent memory corruption vulnerabilities.