Christophe Tafani-Dereeper

Today, I’m thrilled to release a new open-source project I’ve been working on in the past few weeks: Stratus Red Team, an adversary emulation and purple teaming tool, focused on emulating common attack techniques in cloud environments.

I’m a huge fan of disposable security labs, both for offensive and defensive purposes (see: Automating the provisioning of Active Directory labs in Azure). After writing Cloud Security Breaches and Vulnerabilities: 2021 in Review, I wanted to build a “purposely vulnerable AWS lab” with a typical attack path including static, long-lived credentials and with a supply-chain security element.

When using AWS in an enterprise environment, best practices dictate to use a single sign-on service for identity and access management. AWS SSO is a popular solution, integrating with third-party providers such as Okta and allowing to centrally manage roles and permissions in multiple AWS accounts. In this post, we demonstrate that AWS SSO is vulnerable by design to device code authentication phishing – just like any identity provider implementing OpenID Connect device code authentication. This technique was first demonstrated by Dr. Nestori Syynimaa for Azure AD. The feature provides a powerful phishing vector for attackers, rendering ineffective controls suchContinue reading… Phishing for AWS credentials via AWS SSO device code authentication

In this short blog post, we describe how to retrieve AWS security credentials (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY and AWS_SESSION_TOKEN) when authenticated in the AWS Console.

In cloud environments, companies usually describe their infrastructure as code using tools like Terraform or CloudFormation. In this post, we review the landscape of tools that allow us to perform static analysis of Terraform code in order to identify cloud security issues and misconfigurations even before they pose an actual security risk.