DevSpace Directory Traversal via Tar Stream

Executive Summary

DevSpace through version 6.3.21 does not properly validate tar entry names during in-pod sync operations. Attackers can exploit this by sending tar files containing parent-directory traversal sequences (like ../) to write arbitrary files on the developer's workstation, which could lead to code execution.

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Detection Guidance

This vulnerability involves tar entry traversal in DevSpace's in-pod sync stream. To detect it, monitor for unexpected file writes outside intended directories during sync operations. Check DevSpace logs for tar stream errors or unusual file paths. Inspect system logs for files created with parent-directory segments (e.g., ../).

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Impact Analysis

If you use DevSpace for container development, an attacker could compromise your workstation by writing malicious files outside intended directories. This could result in unauthorized code execution, data theft, or further network compromise depending on your system's access.

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Compliance Impact

This vulnerability could lead to unauthorized file access or code execution, potentially violating data protection requirements under GDPR or HIPAA. Organizations may face compliance violations if sensitive data is exposed or altered due to this issue.

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Mitigation Strategies

Update DevSpace to a version that properly validates tar entry names to reject parent-directory segments. Avoid using DevSpace in untrusted environments or with malicious containers.

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