Publish Layerfault deep challenge LF-CH-EVAS-0014

CHALLENGE_ORACLE.json

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+{
+  "attack_surface": [
+    "package-evasion"
+  ],
+  "control_type": "compound",
+  "corpus_id": "LF-CH-EVAS-0014",
+  "difficulty": "adversarial",
+  "expected_decision": "BLOCK",
+  "ground_truth": "synthetic-generated",
+  "layerfault_rule_expectations": {
+    "candidate_rules": [],
+    "expected_rules": [],
+    "must_not_rules": []
+  },
+  "oracle_ids": [
+    "LF-ORACLE-PACKAGE-PATH-COLLISION"
+  ],
+  "related_cases": [],
+  "repo_name": "evasion-path-normalization-collision",
+  "safe_fixture": true,
+  "schema": 2,
+  "severity": "critical",
+  "techniques": [
+    "unicode-normalization"
+  ],
+  "transformations": [
+    "unicode-normalization"
+  ]
+}

FIXTURE_LAYOUT.json

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+{
+  "artifacts": [
+    "config.json",
+    "assets/caf\u00e9.txt",
+    "assets/cafe\u0301.txt"
+  ],
+  "family": "evasion",
+  "note": "All content is synthetic and inert. Do not treat this as a production model.",
+  "repo_name": "evasion-path-normalization-collision"
+}

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [],
+  "challenge": {
+    "attack_surface": [
+      "package-evasion"
+    ],
+    "control_type": "compound",
+    "difficulty": "adversarial",
+    "expected_decision": "BLOCK",
+    "oracle_ids": [
+      "LF-ORACLE-PACKAGE-PATH-COLLISION"
+    ],
+    "related_cases": [],
+    "severity": "critical",
+    "techniques": [
+      "unicode-normalization"
+    ],
+    "transformations": [
+      "unicode-normalization"
+    ]
+  },
+  "corpus_id": "LF-CH-EVAS-0014",
+  "description": "Two paths normalize to visually equivalent names with different content.",
+  "expected_rules": [],
+  "generator": "challenges.generate_challenge",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "evasion-path-normalization-collision",
+  "repo_type": "model",
+  "safe_fixture": true,
+  "safety": "inert/canary-only",
+  "schema": 1,
+  "validation": {
+    "kind": "verify-package",
+    "target": "."
+  }
+}

README.md

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+---
+license: apache-2.0
+tags:
+- layerfault
+- security-research
+- model-security
+- synthetic
+- adversarial-testing
+extra_gated_prompt: >-
+  This repository is a synthetic security-test artifact from the Layerfault
+  corpus. It intentionally contains adversarial characteristics (e.g.
+  suspicious pickle opcodes, executable-format smuggling, prompt-injection
+  strings) designed to exercise security scanner detection rules. It is
+  **not** a usable ML model and must never be loaded or executed outside an
+  isolated scanner-testing environment. By accepting, you confirm you
+  understand this repository is a test fixture, not production model
+  weights.
+extra_gated_button_content: I understand this is a security test fixture and accept the risk
+gated: auto
+---
+
+# evasion-path-normalization-collision
+
+> **SECURITY TEST ARTIFACT: DO NOT USE AS A PRODUCTION MODEL**
+
+This repository is part of the Layerfault synthetic security corpus.
+It is deliberately constructed to contain security-relevant characteristics for scanner testing.
+
+**Corpus ID:** `LF-CH-EVAS-0014`
+
+## Purpose
+
+Two paths normalize to visually equivalent names with different content.
+
+## Direct expected Layerfault rules
+
+- None; this repository is a control/comparison input.
+
+## Candidate rules
+
+These are deliberately plausible targets that remain marked as candidates until the exact
+Layerfault build used for certification confirms them.
+
+- None
+
+## Negative-control rules
+
+These should remain silent for this corpus item.
+
+- None
+
+## Safety
+
+The corpus uses fake secrets, loopback/`.invalid` network destinations, harmless marker output,
+and synthetic model behavior only. It is intended for static scanning and isolated security testing.
+
+## Challenge classification
+
+- Severity: **critical**
+- Difficulty: **adversarial**
+- Expected admission decision: **BLOCK**
+- Control type: **compound**
+- Attack surface: package-evasion
+- Techniques: unicode-normalization
+- Transformations: unicode-normalization
+
+### Ground-truth oracle IDs
+
+- `LF-ORACLE-PACKAGE-PATH-COLLISION`
+
+These oracle IDs describe synthetic ground truth. They do not claim that a
+matching Layerfault detector already exists. A challenge may intentionally expose
+a scanner blind spot and remain unmapped until the detector is implemented.

SHA256SUMS.json

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+[
+  {
+    "path": "CHALLENGE_ORACLE.json",
+    "sha256": "26a87838052da49ec423964c7ea466337c0e896d6ddc5cf99966d74b719da00e",
+    "size": 651
+  },
+  {
+    "path": "FIXTURE_LAYOUT.json",
+    "sha256": "43b6ce03e23eef6196674c089628ddeae63a8a9ddf7edffc47dfc596848e363a",
+    "size": 268
+  },
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "fa515fec1b94da64b1a8fa2b0a86bb638b4ea2b0c5a47b5917827229ab9eec83",
+    "size": 929
+  },
+  {
+    "path": "README.md",
+    "sha256": "85fde756b19cf4f55a19293a94509de4afad2fe1b9042a1dca375bac9f154073",
+    "size": 2284
+  },
+  {
+    "path": "assets/cafe\u0301.txt",
+    "sha256": "0f3182215e612243ac263346f9d8c5506586cf72f02f0ff293aa0f018e2d70f9",
+    "size": 56
+  },
+  {
+    "path": "assets/caf\u00e9.txt",
+    "sha256": "24dd18dc649845dcb2099df6751612ed0d70925959a35a45a6beda82a60bb56e",
+    "size": 15
+  },
+  {
+    "path": "config.json",
+    "sha256": "68d4b6c3308015c36332de690b727c02878531e6440ced97fcf1fd1a46d41704",
+    "size": 88
+  }
+]

assets/café.txt

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+LAYERFAULT_FIXTURE:evasion-path-normalization-collision

assets/café.txt

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+benign control

config.json

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+{
+  "asset_root": "assets",
+  "fixture": true,
+  "model_type": "layerfault_challenge"
+}