A-OSI-ArtifactAudit
Audited BPS: 8690Per-artifact audit automation displaces 5.7 hours of security engineering labor (2.1 hrs manual scanning + 1.8 hrs policy review + 1.2 hrs provenance validation + 0.6 hrs documentation) compressed into 2.8 seconds of deterministic synthesis, yielding 7,286× throughput acceleration and eliminating 99.92% of human decision latency in the artifact approval pipeline.
Executive Summary
The pre-agentic artifact audit workflow was a distributed, human-dependent process anchored in three legacy systems: (1) Excel-based vulnerability tracking maintained by the Compliance Officer, who manually copied CVE data from NVD, cross-referenced CVSS scores, and updated a master spreadsheet every 48 hours; (2) Slack approval chains where security engineers posted scan results in a #artifact-approvals channel, waited for async responses from architects and compliance leads, and manually updated a Jira ticket to reflect approval status—a process that routinely took 6-12 hours due to timezone delays and context-switching overhead; and (3) Jenkins build logs and Git history that required manual inspection by platform engineers to reconstruct provenance, verify commit signatures, and confirm build environment integrity. The Senior Security Engineer spent 2.1 hours per artifact running Trivy scans locally, parsing JSON output in a terminal, manually assessing exploitability by reading CVE descriptions, and writing a Slack summary. The Security Architect spent 1.8 hours reviewing that summary, cross-referencing internal policy documents (stored in Confluence), evaluating business risk against deployment urgency, and making a subjective approval/rejection call. The Compliance Analyst then spent 0.6 hours documenting the decision in a Word document, updating the Excel tracker, and sending notification emails. This workflow was fundamentally bottlenecked by human decision latency, asynchronous communication, and the impossibility of scaling beyond 3-4 artifacts per day without hiring additional security staff. The A-OSI-ArtifactAudit system eliminates this entire chain by replacing subjective human judgment with deterministic mathematical synthesis: cryptographic signature validation (eliminating manual Git log review), automated CVE severity normalization (eliminating Excel tracking), Rego policy evaluation (eliminating Slack approval chains), and provenance chain reconstruction (eliminating manual Jenkins log inspection). The result is a 7,286× throughput acceleration, zero human decision latency, and institutional-grade audit trails that satisfy external compliance auditors without requiring a single Slack message or Excel cell.
{
"artifact_id": "a7f3e9c2b1d4f6a8e5c3b9d2f7a4e1c6b8d3f5a7e9c2b1d4f6a8e5c3b9d2f7",
"artifact_type": "container_image",
"source": {
"registry": "registry.corp.bloomberg.internal",
"repository": "platform/data-ingestion/kafka-consumer-svc",
"tag": "v2.4.1-prod-20240115",
"digest": "sha256:f8a3c7e2b1d9f4a6c8e3b5d7f9a2c4e6b8d1f3a5c7e9b2d4f6a8c0e2b4d6f8"
},
"checksums": {
"sha256": "f8a3c7e2b1d9f4a6c8e3b5d7f9a2c4e6b8d1f3a5c7e9b2d4f6a8c0e2b4d6f8",
"sha512": "e7f2c9a1b3d5f7a9c1e3b5d7f9a1c3e5b7d9f1a3c5e7b9d1f3a5c7e9b1d3f5a7c9e1b3d5f7a9c1e3b5d7f9a1c3e5b7d9f1a3c5e7b9d1f3a5c7e9b1d3f5"
},
"signature": {
"type": "cosign",
"value": "MEUCIQDx7f3a9c2b1d4f6a8e5c3b9d2f7a4e1c6b8d3f5a7e9c2bIhAKf8a3c7e2b1d9f4a6c8e3b5d7f9a2c4e6b8d1f3a5c7e9b2d4f6a8c0e2b4d6f8",
"key_id": "cosign-prod-key-2024-01",
"timestamp": "2024-01-15T14:32:47.123Z"
},
"metadata": {
"created_at": "2024-01-15T14:15:22.000Z",
"size_bytes": 487392841,
"labels": {
"maintainer": "platform-engineering@bloomberg.com",
"version": "v2.4.1",
"build_id": "jenkins-prod-build-8847-kafka-consumer",
"commit_sha": "a7f3e9c2b1d4f6a8e5c3b9d2f7a4e1c6b8d3f5a"
},
"layers": [
{
"digest": "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"size": 142857291
},
{
"digest": "sha256:f8a3c7e2b1d9f4a6c8e3b5d7f9a2c4e6b8d1f3a5c7e9b2d4f6a8c0e2b4d6f8",
"size": 89234567
},
{
"digest": "sha256:c7e9b1d3f5a7c9e1b3d5f7a9c1e3b5d7f9a1c3e5b7d9f1a3c5e7b9d1f3a5c7",
"size": 156234891
},
{
"digest": "sha256:b5d7f9a1c3e5b7d9f1a3c5e7b9d1f3a5c7e9b1d3f5a7c9e1b3d5f7a9c1e3b5",
"size": 98765432
}
]
},
"audit_config": {
"policy_set": "strict",
"severity_threshold": "high",
"max_cve_age_days": 30,
"require_signature": true,
"allowed_registries": [
"registry.corp.bloomberg.internal",
"registry.prod.bloomberg.internal",
"gcr.io/bloomberg-prod"
],
"blocked_packages": [
"openssl@<1.1.1w",
"log4j@<2.17.1",
"curl@<7.85.0",
"wget@<1.21.3"
],
"custom_checks": [
{
"name": "bloomberg_compliance_pii_scan",
"rego_policy": "package bloomberg.compliance\ndefault allow = false\nallow {\n input.metadata.labels.maintainer\n contains(input.metadata.labels.maintainer, \"@bloomberg.com\")\n}\nallow {\n input.source.registry\n startswith(input.source.registry, \"registry.corp.bloomberg\")\n}",
"weight": 0.95
},
{
"name": "supply_chain_sbom_validation",
"rego_policy": "package supply_chain\ndefault sbom_present = false\nsbom_present {\n input.scan_results.sbom\n input.scan_results.sbom.format\n input.scan_results.sbom.location\n}",
"weight": 0.85
},
{
"name": "layer_provenance_tracking",
"rego_policy": "package provenance\ndefault layers_valid = false\nlayers_valid {\n count(input.metadata.layers) > 0\n every layer in input.metadata.layers {\n startswith(layer.digest, \"sha256:\")\n layer.size > 0\n }\n}",
"weight": 0.8
}
]
},
"scan_results": {
"vulnerabilities": [
{
"cve_id": "CVE-2023-44487",
"severity": "high",
"cvss_score": 7.5,
"package": "openssl",
"fixed_version": "1.1.1w"
},
{
"cve_id": "CVE-2024-0567",
"severity": "medium",
"cvss_score": 5.3,
"package": "curl",
"fixed_version": "7.85.0"
},
{
"cve_id": "CVE-2023-38545",
"severity": "critical",
"cvss_score": 9.8,
"package": "curl",
"fixed_version": "8.4.0"
},
{
"cve_id": "CVE-2023-46604",
"severity": "critical",
"cvss_score": 10,
"package": "apache-commons-text",
"fixed_version": "1.10.0"
},
{
"cve_id": "CVE-2024-1086",
"severity": "high",
"cvss_score": 8.4,
"package": "linux-kernel",
"fixed_version": "6.7.4"
}
],
"sbom": {
"format": "cyclonedx",
"location": "https://registry.corp.bloomberg.internal/v2/platform/data-ingestion/kafka-consumer-svc/blobs/sha256:sbom-cyclonedx-1.4.json"
}
}
}{
"synthesis_id": "syn-70-a7f3e9c2b1d4f6a8e5c3b9d2f7a4e1c6-20240115T143247Z",
"logic_id": "A-OSI-ArtifactAudit",
"bps_verified": 8690,
"model_stack": [
"OSI-ArtifactAudit-v1.2.4",
"Bayesian-RiskWeighting-v2.1",
"CVE-SeverityNormalization-v3.0",
"Provenance-ChainValidator-v1.8",
"PolicyEngine-Rego-v2.3"
],
"processing_ms": 2847,
"timestamp": "2024-01-15T14:35:14.970Z",
"audit_verdict": {
"status": "QUARANTINED",
"confidence": 0.9847,
"decision_rationale": "Critical vulnerabilities detected (CVE-2023-46604, CVE-2024-1086) with CVSS ≥9.8 exceed severity threshold. Artifact fails compliance gate despite valid signature and provenance chain. Automatic quarantine triggered per strict policy enforcement.",
"decision_timestamp": "2024-01-15T14:35:12.123Z",
"appeal_window_hours": 24,
"appeal_contact": "platform-security@bloomberg.com"
},
"vulnerability_profile": {
"total_vulnerabilities": 5,
"critical_count": 2,
"high_count": 2,
"medium_count": 1,
"low_count": 0,
"fixable_count": 5,
"unfixable_count": 0,
"critical_vulnerabilities": [
{
"cve_id": "CVE-2023-46604",
"package": "apache-commons-text",
"cvss_score": 10,
"severity": "critical",
"description": "Expression Language Injection in Apache Commons Text",
"fixed_version": "1.10.0",
"days_since_disclosure": 112,
"exploitability": "network",
"attack_complexity": "low"
},
{
"cve_id": "CVE-2024-1086",
"package": "linux-kernel",
"cvss_score": 8.4,
"severity": "high",
"description": "Privilege Escalation in Linux Kernel nf_tables",
"fixed_version": "6.7.4",
"days_since_disclosure": 8,
"exploitability": "local",
"attack_complexity": "low"
}
],
"vulnerability_age_distribution": {
"0_to_7_days": 1,
"8_to_30_days": 1,
"31_to_90_days": 1,
"91_to_180_days": 2,
"180_plus_days": 0
},
"remediation_timeline": {
"critical_remediation_days": 3,
"high_remediation_days": 7,
"medium_remediation_days": 14
}
},
"compliance_score": {
"overall_score": 0.4287,
"score_breakdown": {
"integrity_check": {
"weight": 1,
"result": 1,
"weighted_score": 1,
"details": "SHA-256 checksum verified against registry manifest. Signature validation passed with cosign-prod-key-2024-01."
},
"provenance_check": {
"weight": 0.9,
"result": 0.95,
"weighted_score": 0.855,
"details": "Source registry is approved (registry.corp.bloomberg.internal). Build metadata complete with commit SHA and Jenkins build ID. Minor deduction for lack of attestation chain."
},
"vulnerability_check": {
"weight": 0.95,
"result": 0.15,
"weighted_score": 0.1425,
"details": "5 vulnerabilities detected including 2 critical (CVSS 10.0, 8.4). Fails severity threshold of 'high'. Fixable but not yet patched."
},
"compliance_policy_check": {
"weight": 0.85,
"result": 0.8,
"weighted_score": 0.68,
"details": "Artifact passes Bloomberg PII compliance scan. Maintainer email verified. SBOM present in CycloneDX format. Custom policy checks 2/3 passing."
},
"staleness_check": {
"weight": 0.6,
"result": 0.95,
"weighted_score": 0.57,
"details": "Artifact created 2024-01-15, within acceptable TTL. Build timestamp recent (14:15:22 UTC)."
},
"size_anomaly_check": {
"weight": 0.7,
"result": 0.92,
"weighted_score": 0.644,
"details": "Size 487.4 MB within baseline for kafka-consumer-svc (±2.1σ from historical mean of 512 MB)."
},
"dependency_resolution_check": {
"weight": 0.75,
"result": 0.88,
"weighted_score": 0.66,
"details": "All 4 layers resolved successfully. No circular dependencies detected. SBOM layer mapping complete."
},
"metadata_completeness_check": {
"weight": 0.5,
"result": 1,
"weighted_score": 0.5,
"details": "All required metadata fields present: maintainer, version, build_id, commit_sha, layer digests, timestamps."
}
},
"threshold_comparison": {
"pass_threshold": 0.95,
"warn_threshold": 0.8,
"actual_score": 0.4287,
"status": "FAIL"
}
},
"quarantine_status": {
"quarantine_active": true,
"quarantine_reason": "CRITICAL_VULNERABILITY_DETECTED",
"quarantine_initiated_timestamp": "2024-01-15T14:35:12.456Z",
"quarantine_duration_hours": 72,
"quarantine_expiry_timestamp": "2024-01-18T14:35:12.456Z",
"quarantine_conditions": [
"CVE-2023-46604 (CVSS 10.0) must be patched to apache-commons-text ≥1.10.0",
"CVE-2024-1086 (CVSS 8.4) must be patched to linux-kernel ≥6.7.4",
"Artifact must be re-scanned post-remediation",
"Security team approval required before release"
],
"escalation_path": [
{
"level": 1,
"role": "Platform Security Engineer",
"contact": "platform-security@bloomberg.com",
"sla_hours": 4
},
{
"level": 2,
"role": "Security Architecture Lead",
"contact": "security-architecture@bloomberg.com",
"sla_hours": 8
},
{
"level": 3,
"role": "CISO Office",
"contact": "ciso-office@bloomberg.com",
"sla_hours": 24
}
],
"remediation_guidance": "Update base image to include patched versions of apache-commons-text (≥1.10.0) and linux-kernel (≥6.7.4). Rebuild container image and re-run artifact audit. Expected remediation time: 2-4 hours."
},
"provenance_chain": {
"chain_valid": true,
"chain_confidence": 0.9823,
"chain_elements": [
{
"sequence": 1,
"element_type": "source_commit",
"identifier": "a7f3e9c2b1d4f6a8e5c3b9d2f7a4e1c6b8d3f5a",
"timestamp": "2024-01-15T13:47:33.000Z",
"verified": true,
"verification_method": "git_signature_gpg",
"author": "kafka-platform-team@bloomberg.com",
"message": "Release v2.4.1: Fix consumer lag metrics and add circuit breaker"
},
{
"sequence": 2,
"element_type": "ci_build",
"identifier": "jenkins-prod-build-8847-kafka-consumer",
"timestamp": "2024-01-15T14:02:15.000Z",
"verified": true,
"verification_method": "jenkins_attestation",
"build_status": "SUCCESS",
"build_duration_seconds": 847,
"build_environment": "prod-jenkins-cluster-us-east-1"
},
{
"sequence": 3,
"element_type": "image_build",
"identifier": "docker_buildkit_session_8847",
"timestamp": "2024-01-15T14:15:22.000Z",
"verified": true,
"verification_method": "buildkit_sbom_attestation",
"builder_version": "buildkit/v0.12.1",
"base_image": "ubuntu:22.04-lts-20240115"
},
{
"sequence": 4,
"element_type": "registry_push",
"identifier": "registry.corp.bloomberg.internal/platform/data-ingestion/kafka-consumer-svc:v2.4.1-prod-20240115",
"timestamp": "2024-01-15T14:32:47.000Z",
"verified": true,
"verification_method": "cosign_signature",
"signature_key_id": "cosign-prod-key-2024-01",
"registry_attestation": "present"
},
{
"sequence": 5,
"element_type": "artifact_audit",
"identifier": "syn-70-a7f3e9c2b1d4f6a8e5c3b9d2f7a4e1c6-20240115T143247Z",
"timestamp": "2024-01-15T14:35:14.970Z",
"verified": true,
"verification_method": "osi_audit_engine",
"audit_status": "QUARANTINED"
}
],
"chain_integrity": {
"all_links_verified": true,
"timestamp_monotonicity": true,
"signature_chain_valid": true,
"no_gaps_detected": true
},
"supply_chain_risk_assessment": {
"risk_score": 0.6234,
"risk_level": "MEDIUM",
"risk_factors": [
{
"factor": "Critical vulnerabilities in dependencies",
"impact": "HIGH",
"mitigation": "Immediate patching required"
},
{
"factor": "Recent disclosure of CVE-2024-1086",
"impact": "MEDIUM",
"mitigation": "Monitor for active exploitation"
},
{
"factor": "Provenance chain fully validated",
"impact": "LOW",
"mitigation": "No action required"
}
]
}
},
"bps_calculation_detail": {
"formula_applied": "BPS = 100 × (1 - Π(1 - (P_i × I_i × W_i)))",
"failure_modes_evaluated": [
{
"failure_mode": "CVE_Critical_CVSS_10.0",
"probability": 0.35,
"impact": 1,
"weight": 0.95,
"contribution": 0.3325
},
{
"failure_mode": "CVE_High_CVSS_8.4",
"probability": 0.25,
"impact": 0.95,
"weight": 0.95,
"contribution": 0.2256
},
{
"failure_mode": "CVE_Medium_CVSS_5.3",
"probability": 0.15,
"impact": 0.6,
"weight": 0.85,
"contribution": 0.0765
},
{
"failure_mode": "Unfixed_Vulnerabilities",
"probability": 0.4,
"impact": 0.85,
"weight": 0.9,
"contribution": 0.306
},
{
"failure_mode": "Policy_Violation_Severity_Threshold",
"probability": 0.5,
"impact": 0.8,
"weight": 0.85,
"contribution": 0.34
},
{
"failure_mode": "Metadata_Completeness",
"probability": 0.05,
"impact": 0.3,
"weight": 0.5,
"contribution": 0.0075
}
],
"compound_probability": 0.9842,
"final_bps": 9842,
"bps_interpretation": "CRITICAL_RISK - Automatic rejection and incident escalation triggered. BPS exceeds 70 threshold by 9772 points, indicating severe supply chain risk requiring immediate remediation."
},
"audit_metadata": {
"audit_engine_version": "OSI-ArtifactAudit-v1.2.4",
"audit_policy_version": "bloomberg-strict-policy-2024-01-15",
"audit_duration_ms": 2847,
"audit_stages": [
{
"stage": "PENDING",
"duration_ms": 12
},
{
"stage": "SCANNING",
"duration_ms": 1234,
"scanner_used": "trivy-0.48.1"
},
{
"stage": "VALIDATING",
"duration_ms": 1456,
"validators_executed": [
"signature_validator",
"provenance_validator",
"policy_engine",
"compliance_checker"
]
},
{
"stage": "AUDITED",
"duration_ms": 145
}
],
"cache_hits": 3,
"cache_misses": 2,
"external_api_calls": 4,
"policy_evaluations": 8
}
}