Executive Summary

This vulnerability is a path-traversal flaw in Slopsmith's archive extractors prior to version 0.2.9-alpha.5. It allows an attacker to write arbitrary files outside the intended extraction directory by supplying a specially crafted PSARC or sloppak archive. The issue arises because three archive extractors concatenate archive-entry filenames directly onto the extraction root without validating them, permitting directory traversal sequences like '..' or absolute paths. This can lead to files being placed anywhere on the host system.

When Slopsmith is run with the default Docker configuration (which runs as root) and an attacker can drop a file into the plugin directory, this vulnerability can escalate to arbitrary remote code execution on the host machine.

The vulnerability was patched in version 0.2.9-alpha.5 by adding proper validation to prevent path traversal during archive extraction.

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Impact Analysis

This vulnerability can have serious impacts including unauthorized file writes outside the intended extraction directory, potentially overwriting or creating critical system files.

If the Slopsmith instance is running with default Docker settings (as root), an attacker exploiting this flaw can achieve arbitrary remote code execution on the host system, leading to full system compromise.

This means attackers could execute malicious code, install backdoors, or disrupt the normal operation of the host environment.

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Detection Guidance

This vulnerability involves path traversal in archive extractors used by Slopsmith prior to version 0.2.9-alpha.5. Detection involves identifying if untrusted PSARC or sloppak archives have been extracted without validation, potentially allowing arbitrary file writes outside the intended directory.

Since Slopsmith runs inside a Docker container (often as root), monitoring file system changes in the plugin directory or extraction directories for unexpected or suspicious files can help detect exploitation attempts.

Specific commands to detect this vulnerability are not provided in the available resources. However, general approaches include:

• Checking Docker container logs for unusual activity or errors related to archive extraction.
• Using file integrity monitoring tools to detect unexpected file creations or modifications outside expected directories.
• Manually inspecting extracted archive contents for files with path traversal patterns such as filenames containing '..' or absolute paths.

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Compliance Impact

The vulnerability allows an attacker to write arbitrary files outside the intended extraction directory and potentially execute arbitrary remote code on the host system. This could lead to unauthorized access, data manipulation, or data breaches.

Such unauthorized access and potential data breaches could negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require strict controls over data confidentiality, integrity, and system security.

Until the vulnerability is patched (in version 0.2.9-alpha.5), users are advised not to open archives from untrusted sources or expose the Slopsmith instance to the public internet, which are important mitigation steps to maintain compliance.

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Mitigation Strategies

To mitigate this vulnerability immediately, do not open PSARC or sloppak archives from untrusted sources.

Do not expose the Slopsmith instance to the public internet until it is updated.

If you are using the Docker version of Slopsmith, avoid running the container as root or drop privileges if possible.

Once available, pull and deploy the latest Slopsmith Docker image that includes the patch (version 0.2.9-alpha.5 or later).

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