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Miggo AIRoot Cause AnalysisThe vulnerability, as described in the advisory, allows bypassing Deno's environment permission checks using the process.loadEnvFile() function. The advisory states that versions up to 2.8.0 are vulnerable, and 2.8.1 is patched. By comparing the git tags for v2.8.0 and v2.8.1, I identified the fixing commit 044bed8486dbc64ef486fbee214d9ecf40cac41b. The commit message, "fix(ext/node): require env permission for process.loadEnvFile", directly points to the vulnerability. The code changes are in the Rust file ext/node/lib.rs, specifically within the function op_node_load_env_file. The patch introduces a call to permissions.check_env_all(), which was previously missing. This confirms that op_node_load_env_file is the vulnerable function, as it was responsible for loading the environment variables without proper authorization checks.
op_node_load_env_fileext/node/lib.rs
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| deno | rust | <= 2.8.0 | 2.8.1 |