Missing workspace boundary validation allows arbitrary file read

Security · Medium · Confidence: 96%

File: rust/crates/runtime/src/file_ops.rs Location: read_file

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What's wrong

The function reads a file path supplied by the caller without checking that it stays inside the intended workspace. The line let absolute_path = normalize_path(path)?; resolves the user‑provided path to an absolute path, but no subsequent call to validate_workspace_boundary is made, so a malicious caller can traverse out of the workspace (e.g., using ../ or symlinks) and read any file the process can access.

Suggested fix

Validate the resolved path against the workspace root before reading the file. For example:

pub fn read_file(
    path: &str,
    offset: Option<usize>,
    limit: Option<usize>,
    workspace_root: &Path,
) -> io::Result<ReadFileOutput> {
    let absolute_path = normalize_path(path)?;
    // Ensure the path stays within the workspace
    validate_workspace_boundary(&absolute_path, workspace_root)?;
    // ... rest of the function unchanged ...
}

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About this report

This finding was generated by an automated audit tool using Llama 3.3 70B + verification passes. Only findings with ≥92% confidence that passed both LLM self-verification and line reference verification are reported. False positives are still possible — please verify before acting.