THE article highlights vulnerabilities in publicly exposed serverless applications, focusing on the security risks associated with Google Cloud Run services. Key points include:
1. **Vulnerability Exposure**: Serverless applications can be compromised through attack vectors like Local File Inclusion (LFI) and Command Injection, resulting in unauthorized access to sensitive data and potential full environment takeover.
2. **Attack Scenarios**: Detailed examples illustrate how flaws in code can be exploited, emphasizing the importance of input validation to prevent arbitrary file access and unauthorized command execution.
3. **Hardening Strategies**: Mandiant recommends several protective measures:
- Implementing a Secure Software Development Lifecycle (S-SDLC)
- Using dedicated service accounts, limiting permissions to essential functions via Identity and Access Management (IAM)
- Employing a Web Application Firewall (WAF) for filtering malicious traffic
- Isolating public-facing services in separate Google Cloud projects
- Integrating Cloud Armor for additional security against common vulnerabilities.
4. **Defense-in-Depth Approach**: Organizations should adopt robust security practices, including continuous security testing and proactive vulnerability identification during development.
5. **Serverless Architecture Controls**: The article emphasizes the importance of restricting access to sensitive resources and suggests using VPC Service Controls to limit lateral movement within the cloud infrastructure.
The conclusion stresses the need for integrating security early in the development process and prioritizing comprehensive defense strategies.