Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2018-25181 is a path traversal vulnerability in Musicco version 2.0.0 that allows unauthenticated attackers to download arbitrary directories from the server.'}, {'type': 'paragraph', 'content': "The vulnerability occurs because the application accepts a 'parent' parameter in the getAlbum endpoint, which specifies a directory path. This parameter is not properly validated or sanitized, allowing attackers to include directory traversal sequences (like '../../') to access directories outside the intended scope."}, {'type': 'paragraph', 'content': 'When exploited, the server creates a ZIP archive of the specified directory and serves it as a downloadable file, enabling attackers to obtain sensitive system files and directories.'}] [1, 2]

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Impact Analysis

This vulnerability can have serious security impacts because it allows attackers to access and download arbitrary directories on the server without any authentication.

• Attackers can obtain sensitive system files and configuration data that may contain confidential information.
• Exposure of sensitive data can lead to further attacks, such as privilege escalation or system compromise.
• Since the vulnerability does not require authentication, it can be exploited remotely by anyone aware of the flaw.

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by attempting to exploit the path traversal flaw in the getAlbum endpoint by sending specially crafted HTTP GET requests that include directory traversal sequences in the parent parameter.'}, {'type': 'paragraph', 'content': 'For example, you can use curl or similar tools to send requests that try to download directories outside the intended scope and observe if the server returns ZIP files containing those directories.'}, {'type': 'list_item', 'content': 'curl -v "http://[target]/[PATH]/?getAlbum&parent=../../../../etc&album=passwd" -o passwd.zip'}, {'type': 'list_item', 'content': 'curl -v "http://[target]/[PATH]/?getAlbum&parent=../../../../Efe_S1/apache/conf&album=Efe" -o Efe.zip'}, {'type': 'paragraph', 'content': 'If the server responds with a ZIP file containing files from the specified directory, it confirms the presence of the vulnerability.'}] [1]

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Mitigation Strategies

[{'type': 'paragraph', 'content': 'Immediate mitigation steps include restricting or disabling access to the vulnerable getAlbum endpoint until a patch or fix is applied.'}, {'type': 'paragraph', 'content': 'You should also implement input validation and sanitization on the parent parameter to prevent directory traversal sequences such as "../" from being processed.'}, {'type': 'paragraph', 'content': 'If possible, update or patch the Musicco application to a version where this vulnerability is fixed.'}, {'type': 'paragraph', 'content': 'Additionally, monitor access logs for suspicious requests containing directory traversal patterns and block or alert on such attempts.'}] [1, 2]

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