CVE-2012-6303 in WaveSurfer
Summary
by MITRE
Heap-based buffer overflow in the GetWavHeader function in generic/jkSoundFile.c in the Snack Sound Toolkit, as used in WaveSurfer 1.8.8p4, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large chunk size in a WAV file.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 08/04/2025
The vulnerability identified as CVE-2012-6303 represents a critical heap-based buffer overflow flaw within the Snack Sound Toolkit's audio processing component. This vulnerability specifically affects the GetWavHeader function located in the generic/jkSoundFile.c source file, which is integrated into the WaveSurfer 1.8.8p4 application. The flaw manifests when the application processes WAV audio files that contain malformed chunk size parameters, creating a condition where memory allocation occurs based on user-supplied data without proper validation or bounds checking.
The technical implementation of this vulnerability stems from insufficient input validation within the WAV file parsing logic. When the GetWavHeader function encounters a WAV file with an oversized chunk size field, it attempts to allocate heap memory based on this maliciously crafted value. This unvalidated allocation creates a situation where the application writes data beyond the allocated buffer boundaries, resulting in memory corruption that can be exploited by remote attackers. The vulnerability operates at the intersection of improper input validation and memory management errors, aligning with CWE-121 heap-based buffer overflow patterns that are commonly exploited in remote code execution scenarios.
From an operational impact perspective, this vulnerability presents significant risks to systems utilizing WaveSurfer 1.8.8p4 for audio processing tasks. Remote attackers can trigger a denial of service condition by causing application crashes through controlled buffer overflows, effectively rendering the audio processing application unavailable to legitimate users. More critically, the vulnerability's potential for arbitrary code execution means that attackers could gain unauthorized control over affected systems, especially if the application runs with elevated privileges or processes untrusted audio content from external sources. The attack vector is particularly concerning given that WAV files are commonly used media formats that may be encountered in email attachments, web downloads, or file sharing scenarios.
The exploitation of this vulnerability aligns with several tactics outlined in the MITRE ATT&CK framework, particularly those related to code injection and privilege escalation. Attackers could leverage this flaw to execute malicious code within the application context, potentially leading to full system compromise. The vulnerability's remediation requires careful attention to memory allocation practices and input validation mechanisms, emphasizing the importance of defensive programming techniques and secure coding standards. Organizations should implement immediate patches or workarounds, as the vulnerability's exposure window increases with the prevalence of audio file sharing and the potential for automated exploitation. The flaw also underscores the critical need for regular security assessments of multimedia processing libraries and the importance of maintaining up-to-date software versions to prevent exploitation of known vulnerabilities in third-party components.