java: unsafe file traversal #116
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sourya-deepsource
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Mar 7, 2025
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Description
This PR introduces a new java security checker named
unsafe_file_traversalto detect potential path traversal vulnerabilities in Java. Improper handling of file paths, especially when constructed dynamically with user input, can allow attackers to access unauthorized files, leading to security risks such as information disclosure, arbitrary file access, or file manipulation.Detection Logic
The checker flags the following unsafe patterns:
File()with user-controlled inputFile()with string concatenation involving user inputFile()withString.format()where user input is used in formattingExclusions
This checker excludes test directories and vendor dependencies to reduce false positives.