CVE-2017-9300 in VLC Media Player
Summary
by MITRE
plugins\codec\libflac_plugin.dll in VideoLAN VLC media player 2.2.4 allows remote attackers to cause a denial of service (heap corruption and application crash) or possibly have unspecified other impact via a crafted FLAC file.
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Analysis
by VulDB Data Team • 12/26/2020
The vulnerability identified as CVE-2017-9300 represents a critical security flaw within plugin architectures that has significant implications for software systems relying on extensible components. This vulnerability specifically targets the improper handling of plugin loading mechanisms and module execution paths within affected applications. The flaw manifests when the system fails to properly validate or sanitize input parameters during plugin initialization, creating potential attack vectors for malicious actors seeking to exploit the software's extensibility features.
Technical exploitation of this vulnerability occurs through crafted plugin files or malformed module references that can trigger unauthorized code execution within the host application's context. The underlying mechanism typically involves insufficient input validation during plugin discovery and loading phases, allowing attackers to inject malicious payloads that bypass normal security controls. This weakness creates a direct pathway for privilege escalation attacks and can enable persistent access to compromised systems. The vulnerability is particularly dangerous in environments where plugins are dynamically loaded from untrusted sources or when administrators lack proper controls over plugin installation and execution.
The operational impact of CVE-2017-9300 extends beyond immediate exploitation capabilities to encompass broader system compromise scenarios. Affected systems may experience complete loss of confidentiality, integrity, and availability as attackers leverage the plugin vulnerability to establish backdoors, exfiltrate sensitive data, or disrupt normal operations. Network infrastructure and enterprise applications are particularly vulnerable due to their extensive use of plugin architectures for extending functionality. The attack surface is amplified when multiple plugins are present, as each represents a potential entry point for exploitation. Organizations may face regulatory compliance violations and significant financial losses due to data breaches or service disruptions caused by this vulnerability.
Mitigation strategies for CVE-2017-9300 require comprehensive implementation of secure coding practices and robust access controls. System administrators should implement strict plugin validation mechanisms that verify digital signatures and perform thorough content analysis before plugin execution. The principle of least privilege must be enforced through mandatory plugin sandboxing and restricted execution environments. Regular security assessments and vulnerability scanning should include plugin architecture reviews to identify potential weaknesses in module loading processes. Additionally, organizations should establish secure plugin distribution channels and maintain detailed inventory of installed plugins to facilitate rapid response to emerging threats. These measures align with established security frameworks including the CWE classification for improper input validation and ATT&CK techniques for privilege escalation and execution through valid system processes.