78
tenable.com
Findings
5
·
2
·
1
Checks
8 passive
Executive Summary
AI-GENERATED
tenable.com scored 78/100, meeting baseline requirements but with 2 findings that require attention. The vendor can proceed with a remediation timeline agreement.
Critical gaps in: Security Headers. Positive signals: Known Breaches, TLS Configuration, HSTS Header all passed.
3 action items identified, including 0 critical. The issues are configuration gaps, not architectural problems. A focused remediation effort of 2–5 days could address all findings.
Action Items
Ordered by priority · 3 items
1
Add missing security headers (CSP, X-Frame-Options, Referrer-Policy)
3 of 5 recommended security headers are missing on tenable.com: CSP, X-Frame-Options, Referrer-Policy. These headers protect against clickjacking, MIME-sniffing, and unauthorized browser feature access. Adding them is a server configuration change with no application code changes required.
Compliance Impact
PCI-DSS 4.0Req 6.4.1
Security headers are required application controls
OWASPSecure Headers
Recommended baseline for web applications
Remediation Steps
1
Add Content-Security-Policy header (start with report-only to avoid breakage)
2
Add: X-Frame-Options: DENY (or SAMEORIGIN if you use iframes)
3
Add: Referrer-Policy: strict-origin-when-cross-origin
4
Verify with: curl -sI https://tenable.com | grep -iE 'content-security|x-frame|x-content|referrer|permissions'
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2
Strengthen email authentication configuration
Email authentication is partially configured for tenable.com but has gaps. Actions needed: add SPF record. Until DMARC enforcement is active, spoofed emails may still reach recipients.
Compliance Impact
NIST CSFPR.AC-7
Email authentication is a required access control
Remediation Steps
1
Add SPF record if missing: v=spf1 include:_spf.google.com -all
2
Verify with: nslookup -type=txt _dmarc.tenable.com
3
Review certificate configuration
Certificate issues found for tenable.com: wildcard certificate in use. Wildcard certificates have a broader blast radius if compromised. These are operational hygiene items, not immediate security risks.
Remediation Steps
1
Consider replacing wildcard cert with individual certs for critical subdomains
2
Consolidate certificate issuance to 1–2 trusted CAs
Scan Findings
Security Headers
Critical
DMARC / Email Security
Warning
Certificate Hygiene
Warning
Known Breaches
Healthy
TLS Configuration
Healthy
HSTS Header
Healthy
CVE Exposure
Healthy
DNS Configuration
Healthy