CVE-2015-5719 in Malware Information Sharing Platform
Summary
by MITRE
app/Controller/TemplatesController.php in Malware Information Sharing Platform (MISP) before 2.3.92 does not properly restrict filenames under the tmp/files/ directory, which has unspecified impact and attack vectors.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/14/2022
The vulnerability identified as CVE-2015-5719 affects the Malware Information Sharing Platform MISP version 2.3.91 and earlier, specifically within the app/Controller/TemplatesController.php file. This issue resides in the platform's handling of temporary file operations under the tmp/files/ directory structure, representing a critical security oversight that could enable unauthorized file system interactions. The flaw manifests when the application fails to properly validate or restrict filename inputs, creating potential pathways for malicious actors to manipulate file operations within the temporary storage area.
The technical implementation of this vulnerability stems from inadequate input sanitization and validation mechanisms within the MISP platform's template controller. When processing file operations, the system does not sufficiently validate user-provided filenames or paths, allowing for potential directory traversal attacks or arbitrary file creation and modification. This weakness creates a scenario where attackers can manipulate the temporary file system to execute unauthorized operations or access sensitive data. The unspecified impact and attack vectors suggest that the vulnerability could potentially enable a wide range of malicious activities including but not limited to arbitrary code execution, data exfiltration, or system compromise through improper file handling mechanisms.
From an operational perspective, this vulnerability presents significant risks to organizations relying on MISP for malware information sharing and threat intelligence management. The tmp/files/ directory typically contains temporary files generated during various platform operations, making it a critical target for attackers seeking to establish persistent access or escalate privileges. The vulnerability could enable attackers to upload malicious files that persist beyond normal session boundaries, potentially leading to long-term system compromise. Organizations using MISP for threat intelligence sharing face increased risk of data breaches and system infiltration, particularly in environments where the platform processes sensitive threat intelligence data from multiple sources.
The attack surface for this vulnerability aligns with several ATT&CK techniques including T1059.007 for command and script interpreter execution, T1078 for valid accounts, and T1566 for spearphishing with social engineering. The vulnerability also corresponds to CWE-22 which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal attacks. Organizations should implement immediate mitigations including upgrading to MISP version 2.3.92 or later, which contains the necessary patches to address the filename restriction issues. Additionally, system administrators should review and restrict file permissions on the tmp/files/ directory, implement proper input validation for all file operations, and monitor for suspicious file creation patterns in temporary storage areas.
Security teams should conduct comprehensive assessments of their MISP deployments to identify systems running vulnerable versions and ensure proper patch management procedures are in place. The vulnerability demonstrates the critical importance of proper input validation and file system access controls in web applications, particularly those handling sensitive security data. Organizations should also consider implementing network segmentation and access controls to limit potential exploitation of this vulnerability, while maintaining detailed logging of file system operations within the affected directories. Regular security assessments and penetration testing should include verification of proper file handling mechanisms to prevent similar vulnerabilities from being introduced in future development cycles.