Perform comprehensive cloud asset inventory and relationship mapping using Cartography to build a Neo4j security graph of infrastructure assets, IAM permissions, and attack paths across AWS, GCP, and Azure.
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Perform comprehensive cloud asset inventory and relationship mapping using Cartography to build a Neo4j security graph of infrastructure assets, IAM permissions, and attack paths across AWS, GCP, and Azure.
Cartography is a CNCF sandbox project (originally created at Lyft) that consolidates infrastructure assets and their relationships into a Neo4j graph database. It queries cloud APIs to discover resources, maps relationships between them, and enables security teams to identify attack paths, generate asset reports, and find areas for security improvement. The graph model reveals hidden connections such as IAM permission chains, network paths, and cross-account trust relationships.
When to Use
When conducting security assessments that involve performing cloud asset inventory with cartography
When following incident response procedures for related security events
When performing scheduled security testing or auditing activities
When validating security controls through hands-on testing
Detection Gaps & Validation
A partial sync looks like a complete graph: Cartography only ingests the modules and accounts you configure, and silently drops resources it lacks permission to read. Validate completeness by comparing node counts to ground truth, e.g. MATCH (b:S3Bucket) RETURN count(b) against aws s3api list-buckets, and MATCH (a:AWSAccount) RETURN a.id against your org account list.
Stale nodes survive failed cleanups: nodes and relationships from a prior run linger if a sync errors mid-cleanup, producing phantom attack paths. Filter on freshness - WHERE n.lastupdated >= <run_epoch> - and discard results older than the latest sync.
Attack-path queries miss long or unmodeled edges: a *1..5 variable-length match won't find a 6-hop path, and Cartography doesn't model every relationship (resource-based S3/KMS policies, SCPs, session policies). Widen hop limits cautiously and corroborate IAM escalation paths with PMapper.
anonymous_access reflects sync-time ACL/policy only: it does not account for account-level S3 Block Public Access. Before reporting a public bucket, confirm with aws s3api get-public-access-block.
Region/global confusion: IAM and S3 are global, but EC2/security-group data is per-region - a graph synced for one region under-reports network exposure.
How to validate a finding: treat each Cypher hit as a lead, then independently reproduce it with the AWS CLI (or ScoutSuite) before it goes in a report.
Don't treat the inventory as authoritative until node counts reconcile with the cloud APIs, every result is filtered to the latest , and all in-scope accounts/regions are present in the graph.
lastupdated
Prerequisites
Python 3.8+
Neo4j 4.x or 5.x database
Cloud provider credentials (AWS, GCP, Azure)
Docker (optional, for Neo4j deployment)
Minimum 4GB RAM for Neo4j, more for large environments
MATCH (b:S3Bucket)
WHERE b.anonymous_access = true
OR b.anonymous_actions IS NOT NULL
RETURN b.name, b.anonymous_actions, b.region, b.arn
ORDER BY b.name
Identify IAM users with admin policies
MATCH (user:AWSUser)-[:POLICY]->(policy:AWSPolicy)
WHERE policy.name = 'AdministratorAccess'
OR policy.arn CONTAINS 'AdministratorAccess'
RETURN user.name, user.arn, policy.name, user.password_last_used
Find EC2 instances exposed to internet
MATCH (instance:EC2Instance)-[:MEMBER_OF_EC2_SECURITY_GROUP]->(sg:EC2SecurityGroup)
-[:MEMBER_OF_EC2_SECURITY_GROUP_RULE]->(rule:IpRule)
WHERE rule.fromport <= 22 AND rule.toport >= 22
AND rule.protocol IN ['tcp', '-1']
AND '0.0.0.0/0' IN rule.ipranges
RETURN instance.instanceid, instance.publicipaddress, sg.groupid, sg.name
Discover cross-account trust relationships
MATCH (role:AWSRole)-[:TRUSTS_AWS_PRINCIPAL]->(principal:AWSPrincipal)
WHERE principal.arn CONTAINS ':root'
AND NOT principal.arn CONTAINS role.accountid
RETURN role.arn, role.name, principal.arn AS trusted_account
ORDER BY role.name
Find attack path from public EC2 to sensitive S3
MATCH path = (instance:EC2Instance)-[:STS_ASSUME_ROLE_ALLOWS|MEMBER_OF_EC2_SECURITY_GROUP|
POLICY|INSTANCE_PROFILE*1..5]->(bucket:S3Bucket)
WHERE instance.publicipaddress IS NOT NULL
AND bucket.name CONTAINS 'sensitive'
RETURN path
LIMIT 25
Identify unused IAM roles
MATCH (role:AWSRole)
WHERE role.last_used IS NULL
OR role.last_used < datetime().epochMillis - (90 * 24 * 60 * 60 * 1000)
RETURN role.name, role.arn, role.last_used
ORDER BY role.last_used
Find Lambda functions with overprivileged roles
MATCH (func:AWSLambda)-[:STS_ASSUME_ROLE_ALLOWS]->(role:AWSRole)-[:POLICY]->(policy:AWSPolicy)
WHERE policy.name = 'AdministratorAccess'
RETURN func.name, func.arn, role.name, policy.name
Network path analysis
MATCH (vpc:AWSVpc)-[:RESOURCE]->(subnet:EC2Subnet)-[:MEMBER_OF_SUBNET]->(instance:EC2Instance)
WHERE instance.publicipaddress IS NOT NULL
RETURN vpc.id, subnet.subnetid, subnet.cidr_block, instance.instanceid,
instance.publicipaddress, instance.state
