Executive Summary

This vulnerability is a directory traversal issue in the CacheCleaner component of Robocode version 1.9.3.6. The method recursivelyDelete does not properly sanitize file paths, which allows attackers to manipulate the file path input to traverse directories and delete arbitrary files on the system.

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Impact Analysis

An attacker can exploit this vulnerability to delete arbitrary files on the affected system without authorization, potentially causing data loss, system instability, or disruption of services.

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Detection Guidance

Detection of this vulnerability involves checking if the Robocode version 1.9.3.6 or earlier is running and if the recursivelyDelete method is being called with unsanitized or user-controlled file paths. Since the vulnerability allows directory traversal leading to arbitrary file deletions, monitoring logs for unexpected file deletion attempts outside the intended directories can help. Additionally, reviewing the code or binaries to verify if the fix (path canonicalization and base directory checks) from pull request #67 is applied can confirm if the system is vulnerable. Specific commands are not provided in the resources. [1]

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Mitigation Strategies

Immediate mitigation steps include updating Robocode to a version that includes the fix from pull request #67, which enforces strict path canonicalization and validation against a defined base directory in the recursivelyDelete method. If an update is not immediately possible, restrict access to the CacheCleaner component to trusted users only, monitor file deletion activities closely, and consider applying the patch manually if feasible. The fix prevents directory traversal by ensuring that file deletions cannot occur outside the allowed base directory. [1]

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