CVE-2018-14332 in Music Player
Summary
by MITRE
An issue was discovered in Clementine Music Player 1.3.1. Clementine.exe is vulnerable to a user mode write access violation due to a NULL pointer dereference in the Init call in the MoodbarPipeline::NewPadCallback function in moodbar/moodbarpipeline.cpp. The vulnerability is triggered when the user opens a malformed mp3 file.
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Analysis
by VulDB Data Team • 04/18/2023
The vulnerability identified as CVE-2018-14332 represents a critical NULL pointer dereference flaw within Clementine Music Player version 1.3.1 that manifests as a user mode write access violation. This issue occurs within the MoodbarPipeline::NewPadCallback function located in the moodbar/moodbarpipeline.cpp source file, demonstrating a classic software security weakness that can lead to application instability and potential exploitation. The vulnerability specifically targets the Init call sequence where the application fails to properly validate pointer references before attempting to access memory locations, creating a scenario where a null pointer dereference can occur during normal media file processing operations.
The technical exploitation of this vulnerability requires a maliciously crafted mp3 file that triggers the malformed media file handling path within the application's audio processing pipeline. When Clementine attempts to process such a file, the MoodbarPipeline component initializes and calls NewPadCallback without proper null pointer validation, leading to an access violation that causes the application to crash or potentially behave unpredictably. This type of vulnerability falls under CWE-476 which specifically addresses NULL Pointer Dereference conditions, representing a fundamental memory safety issue that has been a persistent concern in software development practices. The flaw demonstrates poor defensive programming where the application assumes certain pointer values will be valid without proper validation checks.
The operational impact of this vulnerability extends beyond simple application crashes, as it can be leveraged by attackers to disrupt service availability or potentially execute arbitrary code within the application context. When a user opens a specially crafted mp3 file, the application's response becomes unpredictable and may lead to complete application termination, creating a denial of service condition that affects legitimate users. The vulnerability's trigger mechanism makes it particularly dangerous in environments where users might encounter untrusted media files, such as in shared computing environments or when downloading content from unverified sources. This type of flaw aligns with ATT&CK technique T1203 which involves gaining access to a system through exploitation of software vulnerabilities, and represents a common attack vector in media processing applications where file format parsing is complex and error-prone.
Mitigation strategies for this vulnerability should focus on implementing proper null pointer validation within the MoodbarPipeline::NewPadCallback function and ensuring all pointer references are validated before access. The recommended approach involves adding comprehensive input validation for media file processing components, particularly in areas where external file data is parsed and interpreted. Software vendors should implement proper error handling mechanisms that prevent application crashes when malformed input is encountered, and consider implementing sandboxing or containment strategies for media file processing operations. Additionally, users should be advised to avoid opening untrusted media files and to keep their Clementine installations updated with security patches that address this specific NULL pointer dereference condition. The vulnerability highlights the importance of robust defensive programming practices and proper memory management in multimedia applications where file format parsing can introduce complex security risks.