🛡️ Google GCE Network allows unrestricted traffic to Redis🟢
- Contextual name: 🛡️ GCE Network allows unrestricted traffic to Redis🟢
- ID:
/ce/ca/google/vpc/network-redis-access - Tags:
- Policy Type:
COMPLIANCE_POLICY - Policy Categories:
SECURITY
Logic
Description
Description
This policy identifies Google GCE Networks that have Firewall Rules allowing unrestricted incoming traffic (
0.0.0.0/0) from the internet to the default Redis port,TCP 6379.In GCP, Firewall Rules are defined at the VPC Network level. Each rule either allows or denies traffic based on its configuration. These configurations specify the type of traffic (e.g., protocols and ports) and the source or destination (e.g., IP addresses, subnets, and instances).
Rationale
Redis is an in-memory key-value store commonly used as a cache, message broker, or database. By default, Redis does not enforce authentication and is designed for use within trusted private networks. Exposing Redis to the public internet is a critical security vulnerability that allows unauthenticated users to connect, read, modify, or delete all stored data. Attackers could also exploit certain Redis commands to execute malicious code or gain control over the underlying server.
Redis instances should always be deployed in private subnets with access restricted to authorized application hosts and administrators only.
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Remediation
Remediation
From Google Cloud Console
- Go to
VPC Network.- Go to the
Firewall Rules.- Click the
Firewall Ruleto be modified.- Click
Edit.- Modify
Source IP rangesto specificIP.- Click
Save.From Google Cloud CLI
Identify Firewall Rules Allowing Public Access
gcloud compute networks get-effective-firewalls default \
--format="table(NAME, DIRECTION, IP_RANGES)" \
--filter="IP_RANGES:0.0.0.0/0 AND DIRECTION:INGRESS"Restrict the Source Range
Once you have identified the firewall rules, update each one to restrict access to trusted CIDR ranges:
gcloud compute firewall-rules update {{firewall-rule-name}} \
--source-ranges={{cidr-range1}},{{cidr-range2}}