EBS snapshot is public

Severity: High
Service: EC2
Check ID: EBS_SNAPSHOT_PUBLIC

What this check finds

This is essentially a copy of a hard-drive and may contain sensitive information. These are very easy for attackers to find.

Passing looks like: EBS snapshots are private.

How to fix it

Make the snapshot private immediately.

AWS CLI

aws ec2 modify-snapshot-attribute --snapshot-id SNAPSHOT_ID --attribute createVolumePermission --operation-type remove --group-names all

Names in capitals are placeholders for your own resource. Review a command before you run it.

AWS console

EC2 → Snapshots → select snapshot → Actions → Modify Permissions → Private.

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 EBS snapshot is public
Framework	Controls
PCI-DSS v4.0.1	3.5 Primary account number (PAN) is secured wherever it is stored
HIPAA Security Rule	164.312(a)(2)(iv) Encryption and Decryption of ePHI at Rest
SOC 2 — Trust Services Criteria	C1.2 Access Restrictions and Secure Disposal
NIST SP 800-53 Rev5 (Moderate)	AC-3 Access Enforcement SC-7 Boundary Protection
NIST Cybersecurity Framework 2.0	PR.AA-05 Access permissions and authorizations are enforced with least privilege PR.IR-01 Networks and environments are protected from unauthorized logical access and usage
ISO/IEC 27001:2022 Annex A	A.5.15 Access control A.8.20 Networks security

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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