A sixth result dimension. Versions parsed from httpx tech strings and
Server headers match against a local NVD corpus, so an asset's known
CVEs are named without sending a request.
The stored CPE is not the input: 81 of 7,771 entries carry a version,
so matching on it returns every CVE ever filed against the product.
Versions come from tech and the Server banner, and the NVD pair comes
from a curated map rather than a name match — popper:popper is a 2005
webmail app, aos is a switch OS, and Apache's CVEs live under
apache:http_server, not apache:apache_http_server. An unmapped product
is reported as unmapped.
Ranges compare as zero-padded keys so the match is one SQL pass: a
letter suffix takes its own segment, trailing zeros drop, and numeric
and alphabetic schemes never order against each other. A criteria with
no version statement is discarded at load, because it means every
release. Measured against a reference implementation over 3,000,000
comparisons, residual disagreement is 0.07% and each case is the new
rule being the correct one.
Every match names what is unverified — conditional, backport,
fingerprint, coarse — and confidence is the count of those. Nothing
inferred enters the vulnerability count, triage or coverage a scanner
earned; software_cves keeps its own.
The corpus is a fourth feed, keyless, from the fkie-cad mirror of the
retired NVD JSON feeds: 2,197,146 ranges and 372,244 CVEs in 5m40s,
streamed rather than parsed whole (1,254 MB resident becomes 86 MB).
It rebuilds nightly and re-matches every covering scan, since the
corpus moves without a scan.
Exploitation coverage and the intel change feed leave Arsenal for the
dashboard; Arsenal keeps the feeds and the provider it configures.
Feed row counts, nouns and tables now come from FeedSpec — three
places had hardcoded two kinds, so a third feed rendered 0.
Port versions split out of the Server header in the migration: 223
rows become 3,037.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4NuBh4EsywioeryFZRNQR
