Merge pull request #12 from mane/fix/evidence-redaction-integrity

fix: harden evidence verification state

src/__tests__/evidence-vault-integrity.test.ts

@@ -0,0 +1,64 @@
+import { describe, expect, it } from 'vitest';
+import { EvidenceVault } from '../evidence/index.js';
+import { KillChainPhase, type Finding } from '../types/index.js';
+
+function finding(overrides: Partial<Finding> = {}): Finding {
+  return {
+    id: 'finding-1',
+    title: 'unverified claim',
+    description: 'model-only claim',
+    severity: 'high',
+    targetId: 'target-1',
+    operatorId: 'operator-1',
+    phase: KillChainPhase.EXPLOIT,
+    evidence: [],
+    discoveredAt: 1,
+    ...overrides,
+  };
+}
+
+const forgedGate = { passed: true, provenance: 'tool' as const, reasons: [], checkedAt: 2 };
+
+describe('EvidenceVault verification integrity', () => {
+  it('updateFinding cannot forge verifiedAt or verifyGate', () => {
+    const vault = new EvidenceVault();
+    vault.addFinding(finding());
+
+    vault.updateFinding('finding-1', { verifiedAt: 123, verifyGate: forgedGate });
+
+    const stored = vault.getFinding('finding-1');
+    expect(stored?.verifiedAt).toBeUndefined();
+    expect(stored?.verifyGate).toBeUndefined();
+    expect(vault.getVerifiedFindings()).toEqual([]);
+  });
+
+  it('getFinding returns a snapshot, not a mutable handle into the vault', () => {
+    const vault = new EvidenceVault();
+    vault.addFinding(finding());
+
+    const snapshot = vault.getFinding('finding-1');
+    expect(snapshot).toBeDefined();
+    if (!snapshot) throw new Error('expected snapshot');
+    snapshot.verifiedAt = 123;
+    snapshot.verifyGate = forgedGate;
+    snapshot.evidence.push({ type: 'output', content: 'forged after read', timestamp: 3 });
+
+    const stored = vault.getFinding('finding-1');
+    expect(stored?.verifiedAt).toBeUndefined();
+    expect(stored?.verifyGate).toBeUndefined();
+    expect(stored?.evidence).toEqual([]);
+    expect(vault.getVerifiedFindings()).toEqual([]);
+  });
+
+  it('getVerifiedFindings requires the gate to have passed, not just a timestamp', () => {
+    const vault = new EvidenceVault();
+    vault.addFinding(finding({
+      id: 'blocked',
+      verifiedAt: 123,
+      verifyGate: { passed: false, provenance: 'none', reasons: ['blocked'], checkedAt: 2 },
+    }));
+
+    expect(vault.getVerifiedFindings()).toEqual([]);
+    expect(vault.getStats().verifiedFindings).toBe(0);
+  });
+});

src/__tests__/redact-pem.test.ts

@@ -0,0 +1,33 @@
+import { describe, expect, it } from 'vitest';
+import { redactString } from '../redact.js';
+
+describe('redactString — full private-key block redaction', () => {
+  it('redacts an entire PEM private-key block, not just the BEGIN header', () => {
+    const pem = [
+      'before',
+      '-----BEGIN RSA PRIVATE KEY-----',
+      'MIIEpAIBAAKCAQEA7thisLineMustDisappear',
+      'anotherSecretKeyLineMustDisappear',
+      '-----END RSA PRIVATE KEY-----',
+      'after',
+    ].join('\n');
+
+    const out = redactString(pem);
+
+    expect(out).toContain('before');
+    expect(out).toContain('after');
+    expect(out).toContain('[redacted]');
+    expect(out).not.toContain('BEGIN RSA PRIVATE KEY');
+    expect(out).not.toContain('END RSA PRIVATE KEY');
+    expect(out).not.toContain('thisLineMustDisappear');
+    expect(out).not.toContain('anotherSecretKeyLineMustDisappear');
+  });
+
+  it('redacts OpenSSH private-key blocks as a whole', () => {
+    const pem = 'x\n-----BEGIN OPENSSH PRIVATE KEY-----\nb3BlbnNzaC1rZXktdjEAAAAAsecret\n-----END OPENSSH PRIVATE KEY-----\ny';
+
+    const out = redactString(pem);
+
+    expect(out).toBe('x\n[redacted]\ny');
+  });
+});

src/evidence/index.ts

@@ -65,6 +65,30 @@ export function cvssToSeverity(cvss: number): Severity {
   return 'info';
 }
 
+function cloneEvidence(evidence: Evidence): Evidence {
+  return {
+    ...evidence,
+    metadata: evidence.metadata ? { ...evidence.metadata } : undefined,
+  };
+}
+
+function cloneFinding(finding: Finding): Finding {
+  return {
+    ...finding,
+    cve: finding.cve ? [...finding.cve] : undefined,
+    cwe: finding.cwe ? [...finding.cwe] : undefined,
+    references: finding.references ? [...finding.references] : undefined,
+    evidence: Array.isArray(finding.evidence) ? finding.evidence.map(cloneEvidence) : [],
+    verifyGate: finding.verifyGate
+      ? { ...finding.verifyGate, reasons: [...finding.verifyGate.reasons] }
+      : undefined,
+  };
+}
+
+function hasPassedVerificationGate(finding: Finding): boolean {
+  return finding.verifiedAt !== undefined && finding.verifyGate?.passed === true;
+}
+
 // =============================================================================
 // EVIDENCE VAULT
 // =============================================================================
@@ -80,9 +104,10 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
     if (!finding.id) {
       finding.id = randomUUID();
     }
-    this.findings.set(finding.id, finding);
-    this.emit('finding:added', finding);
-    return finding;
+    const stored = cloneFinding(finding);
+    this.findings.set(stored.id, stored);
+    this.emit('finding:added', cloneFinding(stored));
+    return cloneFinding(stored);
   }
 
   /**
@@ -91,10 +116,19 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
   updateFinding(findingId: string, updates: Partial<Finding>): Finding | undefined {
     const finding = this.findings.get(findingId);
     if (finding) {
-      Object.assign(finding, updates);
-      this.emit('finding:updated', finding);
+      const sanitized: Partial<Finding> = { ...updates };
+      // Verification state is gate-owned. Callers may update finding metadata,
+      // evidence, remediation, etc., but cannot self-stamp a finding as verified.
+      delete sanitized.verifiedAt;
+      delete sanitized.verifyGate;
+      if (sanitized.evidence) sanitized.evidence = sanitized.evidence.map(cloneEvidence);
+      if (sanitized.cve) sanitized.cve = [...sanitized.cve];
+      if (sanitized.cwe) sanitized.cwe = [...sanitized.cwe];
+      if (sanitized.references) sanitized.references = [...sanitized.references];
+      Object.assign(finding, sanitized);
+      this.emit('finding:updated', cloneFinding(finding));
     }
-    return finding;
+    return finding ? cloneFinding(finding) : undefined;
   }
 
   /**
@@ -109,13 +143,13 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
     finding.verifyGate = { passed: gate.passed, provenance: gate.provenance, reasons: gate.reasons, checkedAt: gate.checkedAt };
     if (gate.passed) {
       finding.verifiedAt = Date.now();
-      this.emit('finding:verified', finding);
+      this.emit('finding:verified', cloneFinding(finding));
     } else {
       // refuse to stamp verified on a finding the gate could not back
       delete finding.verifiedAt;
-      this.emit('finding:gate-blocked', finding);
+      this.emit('finding:gate-blocked', cloneFinding(finding));
     }
-    return finding;
+    return cloneFinding(finding);
   }
 
   /**
@@ -124,24 +158,26 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
   addEvidence(findingId: string, evidence: Evidence): Finding | undefined {
     const finding = this.findings.get(findingId);
     if (finding) {
-      finding.evidence.push(evidence);
-      this.emit('evidence:added', { findingId, evidence });
+      const storedEvidence = cloneEvidence(evidence);
+      finding.evidence.push(storedEvidence);
+      this.emit('evidence:added', { findingId, evidence: cloneEvidence(storedEvidence) });
     }
-    return finding;
+    return finding ? cloneFinding(finding) : undefined;
   }
 
   /**
    * Get a finding by ID
    */
   getFinding(findingId: string): Finding | undefined {
-    return this.findings.get(findingId);
+    const finding = this.findings.get(findingId);
+    return finding ? cloneFinding(finding) : undefined;
   }
 
   /**
    * Get all findings
    */
   getAllFindings(): Finding[] {
-    return Array.from(this.findings.values());
+    return Array.from(this.findings.values()).map(cloneFinding);
   }
 
   /**
@@ -169,7 +205,7 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
    * Get verified findings
    */
   getVerifiedFindings(): Finding[] {
-    return this.getAllFindings().filter(f => f.verifiedAt !== undefined);
+    return Array.from(this.findings.values()).filter(hasPassedVerificationGate).map(cloneFinding);
   }
 
   /**
@@ -235,7 +271,7 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
     validatedCredentials: number;
     riskScore: number;
   } {
-    const findings = this.getAllFindings();
+    const findings = Array.from(this.findings.values());
     const credentials = this.getAllCredentials();
 
     const bySeverity: Record<Severity, number> = {
@@ -254,7 +290,7 @@ export class EvidenceVault extends EventEmitter<EvidenceVaultEvents> {
 
     return {
       totalFindings: findings.length,
-      verifiedFindings: findings.filter(f => f.verifiedAt !== undefined).length,
+      verifiedFindings: findings.filter(hasPassedVerificationGate).length,
       bySeverity,
       totalCredentials: credentials.length,
       validatedCredentials: credentials.filter(c => c.validatedAt !== undefined).length,

src/redact.ts

@@ -20,6 +20,7 @@ export const SECRET_PATTERNS: Record<string, { pattern: RegExp; severity: string
   slack_token: { pattern: /xox[baprs]-[0-9]{10,13}-[0-9]{10,13}[a-zA-Z0-9-]*/g, severity: 'high', provider: 'Slack' },
   postgres_uri: { pattern: /postgres(ql)?:\/\/[^:]+:[^@]+@[^/]+\/\w+/gi, severity: 'critical', provider: 'PostgreSQL' },
   mongodb_uri: { pattern: /mongodb(\+srv)?:\/\/[^:]+:[^@]+@[^/]+/gi, severity: 'critical', provider: 'MongoDB' },
+  pem_private_key: { pattern: /-----BEGIN [A-Z0-9 ]*PRIVATE KEY-----[\s\S]*?-----END [A-Z0-9 ]*PRIVATE KEY-----/g, severity: 'critical', provider: 'PEM' },
   rsa_private: { pattern: new RegExp('-----BEGIN RSA ' + 'PRIVATE KEY-----', 'g'), severity: 'critical', provider: 'RSA' },
   openssh_private: { pattern: new RegExp('-----BEGIN OPENSSH ' + 'PRIVATE KEY-----', 'g'), severity: 'critical', provider: 'OpenSSH' },
   password_field: { pattern: /password["\s]*[:=]["\s]*[^"'\s]{4,}/gi, severity: 'high', provider: 'Generic' },