Executive Summary

This vulnerability is a path traversal flaw in the yeqifu warehouse application, specifically in the createResponseEntity function of the AppFileUtils.java file. It occurs because the application improperly handles the input argument 'path', allowing an attacker to manipulate this parameter to traverse directories outside the intended restricted directory. This enables unauthorized access to arbitrary files on the server. The vulnerability is remotely exploitable and has a public proof-of-concept exploit available. [1, 3]

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Impact Analysis

The vulnerability can impact you by allowing an attacker to remotely access and read arbitrary files on your server that should be protected. This compromises the confidentiality of sensitive information stored on the server, potentially exposing private data or configuration files. Since the exploit is publicly available, the risk of attack is increased. [1, 3]

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Detection Guidance

This vulnerability can be detected by testing the image display endpoint /file/showImageByPath with manipulated path parameters that include relative path sequences (e.g., ../) to attempt path traversal. For example, you can use curl commands to send requests with crafted path parameters to check if unauthorized files can be accessed. A sample command might be: curl 'http://<target>/file/showImageByPath?path=../../../../etc/passwd' to test if the server returns the contents of sensitive files. Monitoring network traffic for such suspicious requests or scanning logs for unusual path traversal attempts can also help detect exploitation attempts. [3]

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Mitigation Strategies

Immediate mitigation steps include restricting or disabling the vulnerable endpoint if possible, implementing strict input validation and sanitization on the path parameter to prevent path traversal sequences, and monitoring for exploitation attempts. Since no known countermeasures or patches are currently identified and the product follows a rolling release model, consider replacing the yeqifu warehouse product with an alternative solution to avoid exposure. [1]

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Compliance Impact

This vulnerability allows unauthorized access to arbitrary files on the server, compromising confidentiality. Such unauthorized data exposure can lead to violations of data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive information. Therefore, exploitation of this flaw may result in non-compliance with these standards due to potential data breaches. [1, 3]

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