Datasets:
File size: 3,322 Bytes
209e79d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | """Shared helpers for CyberData 2 builders."""
import ast, hashlib, math, os, re
HERE = os.path.dirname(os.path.abspath(__file__))
SALT = "cyberdata2-v1:"
SYSTEMS = [
"You are a cybersecurity expert. Answer accurately and concisely. If you are not certain, say so instead of guessing.",
"You are a senior security engineer. Give precise, practical answers grounded in established standards (CWE, CAPEC, MITRE ATT&CK, NVD).",
"You are an expert in application security and threat detection. Be accurate; never invent identifiers or facts.",
]
def prio(s, salt=""):
return int(hashlib.md5((SALT + salt + str(s)).encode()).hexdigest()[:12], 16)
def pick_system(rid):
return SYSTEMS[prio(rid, "sys") % len(SYSTEMS)]
def xt(e):
"""Text of an XML element with single spaces (handles xhtml markup inside)."""
return "" if e is None else " ".join(s.strip() for s in e.itertext() if s.strip())
def clean(t):
t = re.sub(r"\(Citation: [^)]*\)", "", t or "")
t = re.sub(r"\[([^\]]+)\]\((?:https?://)[^)]*\)", r"\1", t) # markdown links -> text
t = re.sub(r"<code>(.*?)</code>", r"`\1`", t)
return re.sub(r"[ \t]+", " ", re.sub(r"\n{3,}", "\n\n", t)).strip()
def trunc(t, n):
t = (t or "").strip()
if len(t) <= n: return t
cut = t[:n]
k = max(cut.rfind(". "), cut.rfind("\n"))
return (cut[: k + 1] if k > n * 0.5 else cut.rsplit(" ", 1)[0]).rstrip()
def first_line(t):
return next((l.strip() for l in (t or "").splitlines() if l.strip()), "")[:200]
def parse_list(s):
if isinstance(s, list): return s
try: v = ast.literal_eval(s)
except Exception: return []
return [x for x in v if isinstance(x, str) and re.fullmatch(r"CWE-\d+", x)] if isinstance(v, list) else []
# ---- CVSS v3.1 base score (FIRST specification), used as a self-checking arithmetic task -----------------------------------------------------
W = {"AV": {"N": 0.85, "A": 0.62, "L": 0.55, "P": 0.2}, "AC": {"L": 0.77, "H": 0.44}, "UI": {"N": 0.85, "R": 0.62}, "CIA": {"H": 0.56, "L": 0.22, "N": 0.0}}
PR = {"U": {"N": 0.85, "L": 0.62, "H": 0.27}, "C": {"N": 0.85, "L": 0.68, "H": 0.5}}
def roundup(x):
i = round(x * 100000)
return i / 100000.0 if i % 10000 == 0 else (math.floor(i / 10000) + 1) / 10.0
def cvss31(vec):
m = dict(p.split(":") for p in vec.split("/")[1:])
s = m["S"]
iss = 1 - (1 - W["CIA"][m["C"]]) * (1 - W["CIA"][m["I"]]) * (1 - W["CIA"][m["A"]])
imp = 6.42 * iss if s == "U" else 7.52 * (iss - 0.029) - 3.25 * (iss - 0.02) ** 15
expl = 8.22 * W["AV"][m["AV"]] * W["AC"][m["AC"]] * PR[s][m["PR"]] * W["UI"][m["UI"]]
if imp <= 0: score = 0.0
elif s == "U": score = roundup(min(imp + expl, 10))
else: score = roundup(min(1.08 * (imp + expl), 10))
sev = "None" if score == 0 else "Low" if score < 4 else "Medium" if score < 7 else "High" if score < 9 else "Critical"
return score, sev
assert cvss31("CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H") == (9.8, "Critical")
assert cvss31("CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N") == (6.1, "Medium")
assert cvss31("CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H") == (7.8, "High")
assert cvss31("CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H") == (10.0, "Critical")
assert cvss31("CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N") == (0.0, "None")
|