VPC with private subnets has no Secrets Manager endpoint

Severity
Low
Service
Secrets Manager
Check ID
SECRETSMANAGER_NO_VPC_ENDPOINT

What this check finds

Secrets Manager is in use but a VPC with private subnets retrieves secrets over the public internet rather than a private interface endpoint. An interface endpoint keeps secret retrieval on the AWS network and lets an endpoint policy constrain access.

Passing looks like: Private Secrets Manager access via VPC endpoint.

How to fix it

Create an interface VPC endpoint for Secrets Manager.

AWS console

VPC → Endpoints → Create endpoint → com.amazonaws.{region}.secretsmanager (Interface) → select the VPC and private subnets → attach a restrictive security group.

Compliance controls it is evidence for

A failing result counts against these controls in KloudLytics; a passing one is evidence towards them. How compliance mapping works

Compliance controls mapped to VPC with private subnets has no Secrets Manager endpoint
FrameworkControls
NIST SP 800-53 Rev5 (Moderate)
  • CA-3 Information Exchange
  • SC-7 Boundary Protection
NIST Cybersecurity Framework 2.0
  • PR.IR-01 Networks and environments are protected from unauthorized logical access and usage
ISO/IEC 27001:2022 Annex A
  • A.8.20 Networks security
  • A.8.21 Security of network services

Checked on every scan

KloudLytics runs this check each time it scans a connected AWS account, through a read-only role, and lists every affected resource with its region. On Pro and Business a fix is written for the specific resource rather than the general case above. The exact access it needs

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