🏛️NIST 800-53 SI-2Rule: NIST-SI-002critical

Flaw Remediation

Description

Identify, report, and correct flaws in the system; install security-relevant software and firmware updates within timelines based on flaw criticality.

⚠️ Risk Impact

The dominant cause of preventable breaches: unpatched known vulnerabilities. CVEs disclosed publicly are exploited within days; organizations with slow patch cycles are systematically targeted.

🔍 How EchelonGraph Detects This

NIST-SI-002Automated scanner rule

EchelonGraph's Tier 1 Cloud Scanner automatically checks for this condition across all connected cloud accounts. Violations are flagged as critical-severity findings with remediation guidance.

🔧 Remediation

Define SLA by severity: Critical 7 days, High 30 days, Medium 90 days. Automate patching where possible (cloud-managed services, container image rebuilds). Document exceptions with risk-acceptance + compensating controls.

💀 Real-World Attack Scenario

Equifax 2017: a known Apache Struts vulnerability (CVE-2017-5638) was disclosed in March. Equifax's patch process didn't reach the vulnerable application for 60+ days. Between March and July 2017, attackers exploited the vuln to exfiltrate 147M consumer records. Total cost: $1.4B in remediation + $575M FTC settlement.

💰 Cost of Non-Compliance

Unpatched-vuln breach cost: avg $4.45M (IBM 2024). Equifax: $1.4B+. MOVEit 2023: $12B industry-wide. Patch SLA violations are #1 in FedRAMP audit findings.

📋 Audit Questions

  • 1.What is the patch SLA by severity?
  • 2.Show current MTTR by severity vs SLA.
  • 3.Walk me through a Critical CVE — detection to remediation timeline.
  • 4.How are exceptions documented and renewed?

🎯 MITRE ATT&CK Mapping

T1190 — Exploit Public-Facing ApplicationT1203 — Exploitation for Client Execution

⚡ Common Pitfalls

  • ⛔SLAs documented but actual MTTR drifts unmeasured
  • ⛔Exception list accumulates without renewal — 'temporary' exceptions persist for years
  • ⛔Patching infrastructure but not application dependencies

📈 Business Value

Disciplined patch management is the highest-ROI security investment. Reduces breach probability proportionally to patch SLA performance.

⏱️ Effort Estimate

Manual

Ongoing per-CVE remediation; 40-60 hours initial program setup

With EchelonGraph

EchelonGraph correlates CVEs to live workloads; tracks SLA per finding

🔗 Cross-Framework References

SOC2-CC6.8ISO27001-A.8.8PCI-6.2

Automate NIST 800-53 SI-2 compliance

EchelonGraph continuously monitors this control across all your cloud accounts.

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