mirror of
https://github.com/0xMarcio/cve.git
synced 2026-10-27 16:51:03 +00:00
574 lines
24 KiB
Python
574 lines
24 KiB
Python
from __future__ import annotations
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import sys
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import tempfile
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import unittest
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from pathlib import Path
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from unittest.mock import patch
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sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "scripts"))
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import update_cves
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import build_site
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import sync_cve_metadata
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class RepositoryClassificationTests(unittest.TestCase):
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def repo(self, name: str, description: str = "", readme: str = "") -> dict:
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return {
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"nameWithOwner": name,
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"url": f"https://github.com/{name}",
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"description": description,
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"isFork": False,
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"isArchived": False,
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"repositoryTopics": {"nodes": []},
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"readmeMd": {"text": readme},
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}
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def test_accepts_cve_named_repository(self) -> None:
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repo = self.repo(
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"AcmeSecurity/CVE-2026-31431-PoC",
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"Proof of concept for Linux privilege escalation",
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"CVE-2026-31431 proof of concept.",
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)
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self.assertEqual(
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update_cves.qualifying_repo_cves(repo, 2026, []),
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{"CVE-2026-31431"},
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)
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def test_rejects_generic_readme_reference(self) -> None:
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repo = self.repo(
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"AcmeSecurity/kernel-notes",
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"Linux security notes",
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"A linked exploit mentions CVE-2026-31431 as a proof of concept.",
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)
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repo["root"] = {"entries": [{"name": "index.js"}]}
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self.assertEqual(update_cves.qualifying_repo_cves(repo, 2026, []), set())
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def test_accepts_readme_poc_with_repository_intent(self) -> None:
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repo = self.repo(
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"AcmeSecurity/kernel-exploits",
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"Linux exploit research",
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"Proof of concept for CVE-2026-31431 with reproduction steps.",
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)
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self.assertEqual(
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update_cves.qualifying_repo_cves(repo, 2026, []),
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{"CVE-2026-31431"},
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)
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def test_rejects_related_repository_links(self) -> None:
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repo = self.repo(
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"AcmeSecurity/CVE-2026-31431-PoC",
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"Proof of concept for CVE-2026-31431",
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"Related exploit: CVE-2026-41940 PoC https://github.com/AcmeSecurity/other",
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)
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self.assertEqual(
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update_cves.qualifying_repo_cves(repo, 2026, []),
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{"CVE-2026-31431"},
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)
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def test_accepts_multiple_pocs_implemented_in_one_repository(self) -> None:
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repo = self.repo(
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"AcmeSecurity/CVE-2026-31431-PoC",
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"Proof of concept for CVE-2026-31431",
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"This repository also includes a proof of concept for CVE-2026-41940.",
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)
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repo["root"] = {"entries": [{"name": "CVE-2026-41940.py"}]}
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self.assertEqual(
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update_cves.qualifying_repo_cves(repo, 2026, []),
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{"CVE-2026-31431", "CVE-2026-41940"},
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)
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def test_rejects_readme_reference_when_repository_names_another_cve(self) -> None:
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repo = self.repo(
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"AcmeSecurity/CVE-2026-20841-PoC",
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"Proof of concept for CVE-2026-20841",
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"The approach resembles the CVE-2016-0856 exploit.",
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)
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repo["repositoryTopics"] = {
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"nodes": [
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{"topic": {"name": "cve-2016-0856"}},
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{"topic": {"name": "cve-2026-20841"}},
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]
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}
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repo["root"] = {"entries": [{"name": "PoC.md"}]}
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self.assertEqual(update_cves.qualifying_repo_cves(repo, 2016, []), set())
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self.assertEqual(
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update_cves.qualifying_repo_cves(repo, 2026, []),
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{"CVE-2026-20841"},
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)
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def test_rejects_profile_and_checker_repositories(self) -> None:
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profile = self.repo(
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"AcmeSecurity/AcmeSecurity",
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"Security engineer profile",
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"Proof of concept for CVE-2026-31431.",
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)
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checker = self.repo(
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"AcmeSecurity/CVE-2026-31431-checker",
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"Safe vulnerability checker",
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"Checks whether CVE-2026-31431 is present.",
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)
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self.assertEqual(update_cves.qualifying_repo_cves(profile, 2026, []), set())
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self.assertEqual(update_cves.qualifying_repo_cves(checker, 2026, []), set())
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def test_rejects_large_cve_collection(self) -> None:
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entries = "\n".join(
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f"Proof of concept for CVE-2026-{number:04d}"
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for number in range(1000, 1027)
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)
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repo = self.repo("AcmeSecurity/exploit-collection", "Exploit collection", entries)
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self.assertEqual(update_cves.qualifying_repo_cves(repo, 2026, []), set())
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def test_rejects_cve_corpora_and_datasets(self) -> None:
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corpus = self.repo(
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"AcmeSecurity/vulnerability-corpus",
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"Machine-readable PoC corpus",
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"CVE-2026-31431 proof-of-concept metadata.",
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)
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dataset = self.repo(
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"AcmeSecurity/exploit-dataset",
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"CVE exploit dataset",
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"CVE-2026-31431 proof-of-concept metadata.",
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)
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self.assertEqual(update_cves.qualifying_repo_cves(corpus, 2026, []), set())
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self.assertEqual(update_cves.qualifying_repo_cves(dataset, 2026, []), set())
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def test_rejects_poc_indexes_and_defensive_tools(self) -> None:
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index = self.repo(
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"AcmeSecurity/searchpoc",
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"Search for proof-of-concept links by CVE ID",
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"CVE-2026-31431 PoC: https://github.com/example/repository",
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)
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shield = self.repo(
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"AcmeSecurity/http-shield",
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"Blocks exploitation attempts",
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"Protects against CVE-2026-31431 exploit traffic.",
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)
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self.assertEqual(update_cves.qualifying_repo_cves(index, 2026, []), set())
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self.assertEqual(update_cves.qualifying_repo_cves(shield, 2026, []), set())
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def test_keeps_specific_cve_poc_scanner(self) -> None:
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repo = self.repo(
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"AcmeSecurity/CVE-2026-31431-PoC-Scanner",
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"Proof-of-concept scanner for CVE-2026-31431",
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)
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repo["root"] = {"entries": [{"name": "scan.py"}]}
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self.assertEqual(
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update_cves.qualifying_repo_cves(repo, 2026, []),
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{"CVE-2026-31431"},
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)
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def test_blacklist_matches_exact_owner_and_repository(self) -> None:
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blacklist = ["mirror-org/poc-corpus"]
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self.assertTrue(update_cves.is_blacklisted_repo("mirror-org/poc-corpus", blacklist))
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self.assertFalse(update_cves.is_blacklisted_repo("source-org/poc-corpus", blacklist))
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class ReferenceAndMarkdownTests(unittest.TestCase):
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def record(self) -> dict:
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return {
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"cveMetadata": {"cveId": "CVE-2026-31431", "state": "PUBLISHED"},
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"containers": {
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"cna": {
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"descriptions": [{"lang": "en", "value": "Linux kernel vulnerability."}],
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"affected": [
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{
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"product": "Linux",
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"versions": [{"version": "4.14", "status": "affected"}],
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}
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],
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"problemTypes": [],
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"references": [
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{"url": "https://research.example/copy-fail", "tags": ["exploit"]},
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{"url": "https://vendor.example/advisory", "tags": ["vendor-advisory"]},
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],
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://database.example/CVE-2026-31431-exploit",
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"tags": ["exploit"],
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}
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]
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}
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],
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},
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}
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def test_uses_cna_and_adp_poc_references(self) -> None:
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self.assertEqual(
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update_cves.poc_references(self.record()),
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[
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"https://research.example/copy-fail",
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"https://database.example/CVE-2026-31431-exploit",
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],
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)
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def test_excludes_blacklisted_github_references(self) -> None:
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record = self.record()
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record["containers"]["cna"]["references"].append(
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{"url": "https://github.com/AcmeSecurity/poc-index", "tags": ["exploit"]}
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)
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self.assertEqual(
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update_cves.poc_references(record, {"acmesecurity/poc-index"}),
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[
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"https://research.example/copy-fail",
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"https://database.example/CVE-2026-31431-exploit",
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],
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)
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def test_excludes_explicitly_unaffected_products_and_vendors(self) -> None:
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for versions in ([], [{
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"version": "All",
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"status": "unaffected",
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"changes": [{"at": "2", "status": "unaffected"}],
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}]):
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with self.subTest(versions=versions):
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record = self.record()
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record["containers"]["cna"]["affected"].append({
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"vendor": "Unaffected vendor",
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"product": "Unaffected product",
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"defaultStatus": "unaffected",
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"versions": versions,
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})
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details = update_cves.details_from_record(record)
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self.assertEqual(details.products, ["Linux"])
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self.assertEqual(details.vendors, [])
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self.assertEqual(details.versions, ["4.14"])
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def test_keeps_products_with_affected_or_incomplete_statuses(self) -> None:
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cases = [
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{"defaultStatus": "affected", "versions": [{"status": "unaffected"}]},
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{"defaultStatus": "unaffected", "versions": [{"status": "affected"}]},
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{"defaultStatus": "unaffected", "versions": [{
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"status": "unaffected", "changes": [{"at": "2", "status": "affected"}],
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}]},
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{"defaultStatus": "unknown", "versions": [{"status": "unaffected"}]},
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{"versions": [{"status": "unaffected"}]},
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{"defaultStatus": "unaffected", "versions": [{"status": "unknown"}]},
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{"defaultStatus": "unaffected", "versions": [{"version": "1"}]},
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{"defaultStatus": "unaffected", "versions": [{
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"status": "unaffected", "changes": [{"at": "2", "status": "unknown"}],
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}]},
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{"defaultStatus": "unaffected", "versions": [{
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"status": "unaffected", "changes": [{"at": "2"}],
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}]},
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{},
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]
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for statuses in cases:
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with self.subTest(statuses=statuses):
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record = self.record()
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record["containers"]["cna"]["affected"] = [{
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"vendor": "Example vendor", "product": "Example product", **statuses,
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}]
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details = update_cves.details_from_record(record)
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self.assertEqual(details.products, ["Example product"])
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self.assertEqual(details.vendors, ["Example vendor"])
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def test_preserves_markdown_layout(self) -> None:
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details = update_cves.details_from_record(self.record())
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self.assertIsNotNone(details)
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details.description = "Linux kernel vulnerability. \r\n\tAdditional context.\t"
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markdown = update_cves.build_markdown(
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"CVE-2026-31431",
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details,
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["https://github.com/AcmeSecurity/CVE-2026-31431-PoC"],
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["https://research.example/copy-fail"],
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)
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self.assertIn(
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"### [CVE-2026-31431](https://www.cve.org/CVERecord?id=CVE-2026-31431)",
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markdown,
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)
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self.assertIn(
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"### Description\n\nLinux kernel vulnerability.\n Additional context.",
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markdown,
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)
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self.assertIn("#### Reference\n- https://research.example/copy-fail", markdown)
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self.assertIn(
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"#### Github\n- https://github.com/AcmeSecurity/CVE-2026-31431-PoC",
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markdown,
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)
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self.assertTrue(markdown.endswith("\n"))
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self.assertFalse(markdown.endswith("\n\n"))
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def test_existing_markdown_changes_only_poc_sections(self) -> None:
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original = """### [CVE-2026-31431](https://cve.mitre.org/)
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### Description
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Keep this description unchanged.
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### POC
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#### Reference
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No PoCs from references.
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#### Github
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No PoCs found on GitHub currently.
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"""
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with tempfile.TemporaryDirectory() as directory:
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path = Path(directory) / "CVE-2026-31431.md"
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path.write_text(original, encoding="utf-8")
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changed = update_cves.update_existing_markdown(
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path,
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["https://github.com/AcmeSecurity/CVE-2026-31431-PoC"],
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["https://research.example/copy-fail"],
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dry_run=False,
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)
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updated = path.read_text(encoding="utf-8")
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self.assertTrue(changed)
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self.assertIn("", updated)
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self.assertIn("Keep this description unchanged.", updated)
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self.assertIn("#### Reference\n- https://research.example/copy-fail\n\n#### Github", updated)
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self.assertTrue(updated.endswith("\n\n"))
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class DiscoveryFailureTests(unittest.TestCase):
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def test_search_does_not_accept_partial_graphql_results(self) -> None:
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payload = {
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"data": {"search": {"repositoryCount": 1, "nodes": []}, "rateLimit": {"remaining": 100}},
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"errors": [{"type": "INTERNAL", "message": "Search unavailable"}],
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}
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with patch.object(update_cves, "http_json", return_value=payload):
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with self.assertRaisesRegex(RuntimeError, "Search unavailable"):
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update_cves.GitHubClient("test").search_page("CVE-2026")
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def test_readme_batch_failure_aborts_discovery(self) -> None:
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repo = {
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"nameWithOwner": "owner/CVE-2026-1234-poc",
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"url": "https://github.com/owner/CVE-2026-1234-poc",
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}
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with patch.object(update_cves, "search_range", return_value=[repo]), patch.object(
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update_cves.GitHubClient, "fetch_readmes", side_effect=RuntimeError("API unavailable")
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):
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with self.assertRaisesRegex(RuntimeError, "API unavailable"):
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update_cves.discover_github_pocs(
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"test", years=[2026], lookback_days=3, backfill=False, cve_filter=set()
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)
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def test_qualified_repository_survives_an_unverified_reference(self) -> None:
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cve = "CVE-2026-1234"
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url = "https://github.com/owner/CVE-2026-1234-poc"
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details = update_cves.CVEDetails("A vulnerability.", [], [], [])
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with tempfile.TemporaryDirectory() as directory:
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root = Path(directory)
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path = root / "2026" / f"{cve}.md"
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path.parent.mkdir()
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path.write_text(update_cves.build_markdown(cve, details, [], [url]), encoding="utf-8")
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update_cves.update_existing_markdown(path, [url], [], dry_run=False)
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with patch.object(build_site, "CVES", root), patch.object(
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build_site, "load_metadata", return_value={}
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), patch.object(build_site, "load_dates", return_value={}), patch.object(
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build_site, "load_verified_references", return_value=set()
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):
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entries, _ = build_site.build_cve_list(set())
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self.assertEqual([(entry["cve"], entry["poc"]) for entry in entries], [(cve, [url])])
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class MetadataSourceTests(unittest.TestCase):
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def test_uses_vector_prefix_when_source_field_is_mislabeled(self) -> None:
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row = sync_cve_metadata.published_metric(
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{
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"version": "3.1",
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"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N",
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"baseScore": 4.1,
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"baseSeverity": "MEDIUM",
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},
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"3.1",
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"CISA-ADP",
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"CISA Vulnrichment",
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)
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self.assertIsNotNone(row)
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self.assertEqual(row[:3], ["3.0", 4.1, "MEDIUM"])
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def test_keeps_every_published_cvss_generation(self) -> None:
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record = {
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"containers": {
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"cna": {
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"providerMetadata": {"shortName": "Acme CNA"},
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"metrics": [
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{
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"cvssV4_0": {
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"baseScore": 6.8,
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"baseSeverity": "MEDIUM",
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}
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},
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{
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"cvssV3_1": {
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 5.5,
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"baseSeverity": "MEDIUM",
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}
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},
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{
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"cvssV2_0": {
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"vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:C",
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"baseScore": 4.6,
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"baseSeverity": "MEDIUM",
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}
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},
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],
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}
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}
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}
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rows = sync_cve_metadata.cve_program_metrics(record)
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self.assertEqual([row[0] for row in rows], ["4.0", "3.1", "2.0"])
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def test_positive_assessment_outranks_conflicting_zero(self) -> None:
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rows = sync_cve_metadata.merge_metrics(
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[[
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"4.0",
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0.0,
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"NONE",
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"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N",
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"Wikimedia Foundation",
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"CVE Program CNA",
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]],
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[[
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"3.1",
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6.1,
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"MEDIUM",
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"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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"[email protected]",
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"Primary",
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]],
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)
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self.assertEqual(rows[0][1:3], [6.1, "MEDIUM"])
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def test_github_advisory_requires_reproducible_poc_material(self) -> None:
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advisory = """### POC
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1. Create `poc.py` with this application:
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```python
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from pathlib import Path
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from nicegui import app, ui
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app.add_media_files('/media', Path('media'))
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ui.run(port=8080)
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|
```
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2. Run `python3 poc.py`.
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3. Send `curl http://localhost:8080/media/%2e%2e/etc/hosts`.
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"""
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|
mention = "The reporter says a PoC exists, but no reproduction material was published."
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self.assertTrue(sync_cve_metadata.advisory_has_poc(advisory))
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self.assertFalse(sync_cve_metadata.advisory_has_poc(mention))
|
|
|
|
|
|
class PublishedLinkDeduplicationTests(unittest.TestCase):
|
|
def test_repository_advisory_survives_its_collection_source(self) -> None:
|
|
cve = "CVE-2021-22555"
|
|
base = "https://github.com/google/security-research"
|
|
advisory = base + "/security/advisories/GHSA-xxx5-8mvq-3528"
|
|
collection = base + "/tree/master/pocs/linux/cve-2021-22555"
|
|
with tempfile.TemporaryDirectory() as directory:
|
|
root = Path(directory)
|
|
path = root / "2021" / f"{cve}.md"
|
|
path.parent.mkdir()
|
|
path.write_text(f"### Description\nA vulnerability.\n\n#### Reference\n- {advisory}\n"
|
|
f"\n#### Collections\n- {collection}\n")
|
|
with patch.object(build_site, "CVES", root), patch.object(build_site, "load_metadata", return_value={}), \
|
|
patch.object(build_site, "load_dates", return_value={}), \
|
|
patch.object(build_site, "load_verified_references", return_value={(cve, build_site.link_key(advisory))}):
|
|
entries, _ = build_site.build_cve_list(set())
|
|
self.assertEqual(entries[0]["poc"], [advisory])
|
|
self.assertEqual(entries[0]["collections"], [collection])
|
|
self.assertEqual(build_site.repo_from_url(advisory), "")
|
|
self.assertEqual(build_site.repo_from_url(advisory.upper()), "")
|
|
self.assertEqual(build_site.repo_from_url(collection), "google/security-research")
|
|
|
|
def test_curated_artifact_variants_survive_publication(self) -> None:
|
|
cve = "CVE-2024-26642"
|
|
base = "https://github.com/google/security-research"
|
|
variants = [f"{base}/tree/master/pocs/linux/kernelctf/{cve}_{kind}" for kind in ("lts", "mitigation")]
|
|
template = "https://github.com/projectdiscovery/nuclei-templates/blob/main/http/Test.yaml?version=One#Request"
|
|
with tempfile.TemporaryDirectory() as directory:
|
|
root = Path(directory)
|
|
path = root / "2024" / f"{cve}.md"
|
|
path.parent.mkdir()
|
|
path.write_text(
|
|
"### Description\nA vulnerability.\n\n#### Github\n- " + base
|
|
+ "\n\n#### Collections\n" + "\n".join(f"- {url}" for url in [*variants, variants[0].replace("google/security-research", "GOOGLE/Security-Research")])
|
|
+ "\n\n#### Nuclei\n" + "\n".join(f"- {url}" for url in [template, template.replace("Test.yaml", "test.yaml")]) + "\n",
|
|
encoding="utf-8",
|
|
)
|
|
with patch.object(build_site, "CVES", root), patch.object(build_site, "load_metadata", return_value={}), \
|
|
patch.object(build_site, "load_dates", return_value={}), \
|
|
patch.object(build_site, "load_verified_references", return_value=set()):
|
|
entries, _ = build_site.build_cve_list(set())
|
|
self.assertEqual(entries[0]["collections"], variants)
|
|
self.assertEqual(entries[0]["nuclei"], [template, template.replace("Test.yaml", "test.yaml")])
|
|
self.assertEqual(entries[0]["poc"], [])
|
|
|
|
def test_published_links_require_absolute_http_urls(self) -> None:
|
|
valid = [
|
|
"https://Example.com/PoC.py?Version=One#Example",
|
|
"http://example.com/poc",
|
|
"HTTPS://example.com/CaseSensitive",
|
|
]
|
|
invalid = [
|
|
"javascript:alert(1)",
|
|
"data:text/html,test",
|
|
"//example.com/poc",
|
|
"/relative/poc",
|
|
"https:///missing-host",
|
|
"https://[invalid/poc",
|
|
"ordinary description text",
|
|
]
|
|
block = "\n".join(f"- {url}" for url in [*invalid, *valid])
|
|
self.assertEqual(build_site.collect_links(block), valid)
|
|
|
|
def test_unverified_reference_is_not_a_poc(self) -> None:
|
|
cve_id = "CVE-2024-41968"
|
|
url = "https://cert.vde.com/en/advisories/VDE-2024-047"
|
|
self.assertFalse(build_site.reference_is_verified_poc(cve_id, url, {}, set()))
|
|
|
|
def test_exact_exploit_tag_makes_reference_a_poc(self) -> None:
|
|
cve_id = "CVE-2025-66645"
|
|
url = "https://github.com/advisories/GHSA-hxp3-63hc-5366"
|
|
metadata = {
|
|
cve_id: {
|
|
"advisories": [[url, ["GitHub Advisory", "Exploit"]]],
|
|
}
|
|
}
|
|
self.assertTrue(build_site.reference_is_verified_poc(cve_id, url, metadata, set()))
|
|
|
|
def test_one_repository_is_one_poc_and_keeps_the_useful_path(self) -> None:
|
|
links = [
|
|
"https://github.com/Helson-S/FuzzyTesting/blob/main/hicolor/cp_dynamic",
|
|
"https://github.com/Helson-S/FuzzyTesting/blob/main/hicolor/cp_dynamic/poc/sample.png",
|
|
"https://github.com/Helson-S/FuzzyTesting/blob/main/hicolor/cp_dynamic/vulDescription.md",
|
|
"https://github.com/AcmeSecurity/CVE-2024-41443",
|
|
]
|
|
self.assertEqual(
|
|
build_site.dedupe_source_links(links, "CVE-2024-41443"),
|
|
[
|
|
"https://github.com/Helson-S/FuzzyTesting/blob/main/hicolor/cp_dynamic/vulDescription.md",
|
|
"https://github.com/AcmeSecurity/CVE-2024-41443",
|
|
],
|
|
)
|
|
|
|
def test_advisory_deduplication_prefers_exploit_evidence(self) -> None:
|
|
rows = [
|
|
["https://github.com/Helson-S/FuzzyTesting", ["Product"]],
|
|
[
|
|
"https://github.com/Helson-S/FuzzyTesting/blob/main/vulDescription.md",
|
|
["Third Party Advisory", "Exploit"],
|
|
],
|
|
]
|
|
self.assertEqual(build_site.dedupe_advisories(rows, "CVE-2024-41443"), [rows[1]])
|
|
|
|
def test_distinct_global_github_advisories_are_not_merged(self) -> None:
|
|
rows = [
|
|
["https://github.com/advisories/GHSA-hxp3-63hc-5366", ["GitHub Advisory"]],
|
|
["https://github.com/advisories/GHSA-5hgx-prqh-5qmp", ["GitHub Advisory"]],
|
|
]
|
|
self.assertEqual(build_site.dedupe_advisories(rows, "CVE-2025-66645"), rows)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|