By now it’s become apparent that the bulk of security incidents involving cloud platforms revolve around some type of configuration issue. An analysis of those cloud configurations published today by the Unit 42 research arm of Palo Alto Networks suggests that the root cause of the issue is most likely the templates many developers and DevOps teams rely on to configure cloud infrastructure. In fact, according to Unit 42’s analysis, more than 199,000 templates have medium-to-high vulnerabilities in use on public clouds.
Matt Chiodi, chief security officer for public cloud for Palo Alto Networks, said the issue stems from the rate at which organizations now want to be able to deploy applications on public cloud. Templates greatly accelerate the process but very few of those templates have been vetted by a cybersecurity team.
According to the report, the most commonly used templates are created using YAML files on instances of Kubernetes (39%), Terraform and CloudFormation (24%). The most vulnerabilities were discovered in templates created using CloudFormation (42%), Terraform (22%) and YAML for Kubernetes (9%).
Chiodi noted most templates are created through a simple three-step DevOps process: design, code and deploy. Unfortunately, in the rush to deploy most DevOps teams forget to scan for vulnerability issues. As a result, Chiodi said cybercriminals have become very adept at siphoning off cloud resources to mine cryptocurrencies at low-enough consumption rates to go unnoticed by many IT organizations.
Other significant cloud security issues surfaced in the report include the fact that 43% of cloud databases are not encrypted and that 60% of cloud storage systems have logging disabled, which Chiodi noted makes it impossible to know whether those systems have been compromised. In addition, the report finds 76% of cloud workloads expose SSH (port 22), while 69% of organizations expose RDP (port 3389) and 27% are using outdated versions of Transport Layer Security.
Overall, the goal now needs to be to make it as simple as possible for DevOps teams to do the right cybersecurity thing going forward, said Chioti.
Unit 42 researchers employed a publicly available GitHub Searching application programming interface (API) to find AWS CloudFormation files, Kubernetes YAML files and HashiCorp Terraform files. Hundreds of thousands of templates were then downloaded and analyzed by the Prisma Cloud infrastructure-as-code (IaC) Scanner to identify the insecure configurations. Each IaC file was also sent to an IaC resource checker to analyze the cloud resources being used in the template. Researchers also used Palo Alto Network’s proprietary AutoFocus and Wildfire tools to identify and investigate cybercrime groups through their usage of custom toolsets (malware samples). Those samples were dynamically and statically analyzed to ensure indicators of compromise.
The Unit 42 research makes it clear there’s a lot of room for improvement when it comes to employing best DevSecOps processes in the age of the cloud. The challenge, however, may have little to do with the tools available. Rather, it’s the absence of a structured set of processes through which DevOps teams and cybersecurity professionals can collaborate that appears to be inflicting the most damage.
— Mike Vizard
