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PASSEDsecurity / security_cert_audit_weak_ciphers
Security Audit Failure — Weak Cipher Suites on Production
A quarterly security audit discovers that 23 production services are still offering deprecated cipher suites including RC4, DES, and 3DES. Several services also support TLS 1.0 and 1.1. This fails PCI DSS Requirement 4.1 and multiple CIS benchmarks.
Pattern
UNKNOWN
Severity
CRITICAL
Confidence
85%
Remediation
Remote Hands
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | UNKNOWN | UNKNOWN | |
| Severity Assessment | CRITICAL | CRITICAL | |
| Incident Correlation | Yes | 18 linked | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Remote Hands — Corax contacts on-site support via call, email, or API |
Scenario Conditions
Quarterly automated security scan. 23 services offering weak ciphers. RC4, DES, 3DES detected. TLS 1.0/1.1 still enabled. PCI DSS compliance at risk. External-facing services included.
Injected Error Messages (2)
Nessus security scan HIGH findings — 23 production services offering deprecated cipher suites, affected ciphers: TLS_RSA_WITH_RC4_128_SHA (15 services), TLS_RSA_WITH_3DES_EDE_CBC_SHA (23 services), TLS_RSA_WITH_DES_CBC_SHA (8 services), additionally 12 services still accepting TLS 1.0 connections and 18 accepting TLS 1.1, PCI DSS Requirement 4.1 violation for 7 in-scope services, Nessus plugin IDs: 20007, 65821, 78479
external portal TLS configuration non-compliant — portal.company.com negotiating TLS 1.0 with RC4 cipher when offered by client, Qualys rating: F, BEAST and POODLE attacks possible, HSTS header missing, external-facing service accessible to customers and partners, immediate remediation required to disable legacy protocol versions and weak cipher suites
Neural Engine Root Cause Analysis
This incident involves two distinct issues: (1) The Nessus security scanner service at http://10.10.100.92:8834 is down/unreachable, and (2) Critical security vulnerabilities discovered in the last successful scan showing 23 production services using deprecated cipher suites and insecure TLS protocols. The scanner downtime prevents continuous security monitoring while the identified vulnerabilities expose the infrastructure to cryptographic attacks and PCI DSS compliance violations.
Remediation Plan
1. Immediately restore Nessus scanner service (restart service, check system resources, verify network connectivity). 2. Validate scanner functionality with test scan. 3. Address critical security findings: update SSL/TLS configurations on all 23 affected services to disable deprecated ciphers (RC4, 3DES, DES). 4. Enforce minimum TLS 1.2 protocol across all services. 5. Prioritize the 7 PCI DSS in-scope services for immediate remediation. 6. Implement automated SSL/TLS configuration compliance checks. 7. Schedule follow-up security scan to verify remediation.
Tested: 2026-03-30Monitors: 2 | Incidents: 2Test ID: cmnckewav08zrobqeeacqdqu7