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validator: stop op4 eval subprocess inheriting secrets - #70
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bitzic
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Jun 27, 2026
bitzic
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- op4 _patched_hidden_eval imports + executes the miner's patched model.py; it was spawned with no env=, so miner code inherited the validator's full os.environ
- pass allowlist-only env via proof.runner._sanitized_env (mirrors the miner-side training subprocess)
- extend the env blocklist: RALPH_VALIDATOR_PRIVKEY[_FILE] (the seal privkey) + the enforcement escape hatches (TEST_MODE, ALLOW_SYNTHETIC _EVAL, ALLOW_MOCK_ATTESTATION, SKIP_HANDSHAKE)
- redact subprocess stderr before re-raising
- stopgap ahead of the full execution sandbox (op4 + audit)
- op4 _patched_hidden_eval imports + executes the miner's patched model.py; it was spawned with no env=, so miner code inherited the validator's full os.environ - pass allowlist-only env via proof.runner._sanitized_env (mirrors the miner-side training subprocess) - extend the env blocklist: RALPH_VALIDATOR_PRIVKEY[_FILE] (the seal privkey) + the enforcement escape hatches (TEST_MODE, ALLOW_SYNTHETIC _EVAL, ALLOW_MOCK_ATTESTATION, SKIP_HANDSHAKE) - redact subprocess stderr before re-raising - stopgap ahead of the full execution sandbox (op4 + audit) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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