CVE-2018-14459 in libgig
Summary
by MITRE
An issue was discovered in libgig 4.1.0. There is an out-of-bounds write in pData[0] access in the function store16 in helper.h.
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Analysis
by VulDB Data Team • 08/27/2025
The vulnerability identified as CVE-2018-14459 represents a critical out-of-bounds write flaw within the libgig library version 4.1.0, which is commonly used for handling gigasample files in audio applications. This library serves as a crucial component in digital audio workstations and sample library software, making the vulnerability particularly concerning for multimedia applications that process large audio datasets. The flaw manifests in the store16 function located within the helper.h file, where improper bounds checking allows maliciously crafted audio files to trigger memory corruption during data processing operations.
The technical nature of this vulnerability stems from insufficient input validation and boundary checking within the store16 function that handles 16-bit data storage operations. When the function processes audio data, it attempts to write values to the pData[0] memory location without verifying that the target array has sufficient capacity to accommodate the operation. This classic buffer overflow condition occurs because the function assumes that the input data will always fit within predetermined memory boundaries, failing to account for malformed or oversized input data that could originate from corrupted audio files or maliciously constructed sample libraries. The vulnerability specifically affects the helper.h file's store16 function, making it a direct target for exploitation through carefully crafted audio file structures that manipulate the data flow to exceed allocated memory limits.
The operational impact of this vulnerability extends beyond simple memory corruption, as it creates opportunities for arbitrary code execution within applications that utilize libgig for audio processing. Attackers could potentially exploit this flaw by distributing malicious audio files that, when opened or processed by vulnerable applications, trigger the out-of-bounds write condition. This could lead to complete system compromise, especially when the affected applications run with elevated privileges or process untrusted audio content from external sources. The vulnerability particularly affects digital audio workstations, sample libraries, and multimedia applications that rely on libgig for gigasample file handling, creating a significant risk for professional audio production environments where users frequently work with third-party sample packs and audio libraries.
Mitigation strategies for CVE-2018-14459 should prioritize immediate patching of affected libgig versions, with security updates addressing the bounds checking issue in the store16 function. Organizations should implement defensive programming practices including input validation, memory bounds checking, and proper error handling within their audio processing applications. The vulnerability aligns with CWE-787 Out-of-bounds Write, which is classified under the broader category of buffer overflow conditions and is often exploited through techniques described in the ATT&CK framework under T1059 Command and Scripting Interpreter and T1203 Exploitation for Client Execution. System administrators should also consider implementing application whitelisting, sandboxing audio processing applications, and monitoring for unusual memory access patterns that could indicate exploitation attempts. Regular security audits of audio processing pipelines and sample library validation procedures are essential to prevent exploitation of similar vulnerabilities in other components of the audio production stack.