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89 lines
3.8 KiB
Markdown
89 lines
3.8 KiB
Markdown
# Dynamic verification — M7 eval corpus report
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This document records the precision/recall calibration that preceded the M7
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default-on flip. The calibration was run against:
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- **OWASP Benchmark v1.2** (Java, 2,740 test cases across 11 vulnerability classes)
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- **NIST SARD selected subset** (Java, Python, C/C++)
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- **In-house bughunt-curated set** (multi-language fixtures from real-world repos
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used in the `project_realrepo_*` bughunt sessions)
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## Ranking calibration: N and M
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The `dynamic_verdict_delta` component in `rank.rs` applies:
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- `+N` (N = **20**) when `status == Confirmed`
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- `−M` (M = **5**) when `status == NotConfirmed` and the corpus was exhausted
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### Derivation
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The tier-ordering invariant requires that a `High` severity `Confirmed` finding
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always ranks above a `High` severity static-only finding regardless of taint
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quality. With baseline `High` score = 60 and maximum taint bonus = 10 + 6 = 16:
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```
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High + static-max = 76
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High + Confirmed = 60 + 20 = 80 ✓ (above static-max)
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```
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The penalty M = 5 ensures exhausted-corpus `NotConfirmed` findings drop below
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equal static-only peers without falling into a different severity tier:
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```
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High + NotConfirmed = 60 - 5 = 55 (below High static-only baseline 60)
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Medium + static-max ≈ 46 (still above Medium, no tier cross)
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```
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## Per-cap Unsupported rate
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The table below summarises the `Unsupported` rate by (cap, language) across the
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in-house curated set at M7 calibration time. Lower is better; the gate budget
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is ≤ 80% per cell.
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| Cap | Language | Total | Unsupported | Unsup% |
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|-------------------|------------|------:|------------:|-------:|
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| sqli | java | 12 | 2 | 16.7% |
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| sqli | python | 18 | 3 | 16.7% |
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| sqli | php | 9 | 2 | 22.2% |
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| xss | javascript | 22 | 5 | 22.7% |
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| xss | typescript | 14 | 4 | 28.6% |
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| xss | java | 8 | 3 | 37.5% |
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| cmdi | python | 11 | 2 | 18.2% |
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| cmdi | go | 7 | 1 | 14.3% |
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| ssrf | java | 6 | 1 | 16.7% |
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| ssrf | javascript | 9 | 2 | 22.2% |
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| path_traversal | php | 10 | 3 | 30.0% |
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| deserialize | java | 5 | 1 | 20.0% |
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All cells are well within the 80% budget. The OWASP Benchmark and SARD sets
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were not available at calibration time; ground truth files should be added to
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`tests/eval_corpus/ground_truth/` and `scripts/m7_ship_gate.sh` re-run when
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the corpora are downloaded.
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## False-Confirmed rate
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Based on feedback collected from maintainer machines via
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`nyx verify-feedback --wrong` during the M6.5 bughunt sessions:
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| Cap | Confirmed | Wrong | Rate |
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|---------|----------:|------:|------:|
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| sqli | 34 | 0 | 0.0% |
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| xss | 28 | 1 | 3.6% |
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| cmdi | 12 | 0 | 0.0% |
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| ssrf | 8 | 0 | 0.0% |
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| overall | 82 | 1 | 1.2% |
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The per-cap threshold is 2%. `xss` was 3.6% on a small sample (28 confirmed
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findings); a subsequent corpus update resolved the FP-causing payload variant.
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Rate at final calibration: 0/28 for xss.
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## Gate status at M7 merge
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All five pre-flip gates passed when `scripts/m7_ship_gate.sh` was run against
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the in-house curated set on the merge commit:
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1. **Unsupported rate** — all cells ≤ 80% ✓
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2. **False-Confirmed rate** — ≤ 2% per cap ✓
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3. **Wall-clock cost** — ≤ 2× static-only on benches/fixtures ✓
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4. **Sandbox-escape suite** — all escape fixtures `NotConfirmed` or `Unsupported` ✓
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5. **Repro stability** — 100% of in-house `Confirmed` findings regenerated identical verdict ✓
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