Release Date: 26/03/2023 | Issue: 180

CloudSecList is a newsletter for busy professionals who want to keep up to date with the cloud security industry. Hand-curated by Marco Lancini.

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This week's articles

How we built DMARC Management using Cloudflare Workers #build, #cloudflare

How Cloudflare built their new DMARC Management solution entirely on top of the Workers platform.

A Guide to Delegated Administrator in AWS Organizations and Multi-Account Management #aws, #explain, #iam

A guide to managing multiple AWS Accounts using AWS Organizations and how to reduce blast radius by leveraging Delegated Administrator capabilities to avoid usage of the management root account.

Using Service Control Policies to protect security baselines #aws, #defend

Post illustrating a specific use case of SCPs that protects the security baseline, or landing zone, configuration you've created for accounts.

Bypassing CloudTrail in AWS Service Catalog, and Other Logging Research #attack, #aws

Public disclosure of a CloudTrail bypass in AWS Service Catalog and other logging research.

Mitigating SSRF in 2023 #attack, #aws, #defend

Article reviewing the different ways of triggering SSRF and discussing which mitigation techniques are most effective.

Implementing Magic Links with Amazon Cognito: A Step-by-Step Guide #aws, #build, #iam

A popular passwordless authentication method is magic links. Although this is not something that Cognito supports out of the box, it can be implemented using its Lambda hooks.

The illustrated guide to S3 pre-signed URLs #aws, #build

Article discussing in great detail what pre-signed URLs are, how to use them, and some best practices to keep in mind.

Network policies are not the right abstraction (for developers) #explain, #kubernetes

Post examining multiple flaws that prevent network policies, on their own, from being an effective solution for a real-world use case.

The 4 Kubernetes policy types #explain, #kubernetes

Post introducing the four types of policies available in Kubernetes (API Objects, Admission Controllers, ValidatingAdmissionPolicy, and Dynamic Admission Controls) and provide guidance on how they should be used.

Top 15 Kubectl plugins for security engineers #defend, #kubernetes

This article aims to address the most common or useful Kubernetes plugins for improving your security posture.

Kubernetes Removals and Major Changes In v1.27 #build, #kubernetes

Article identifying and describing some of the planned (breaking) changes for the Kubernetes v1.27 release.

Escalating Privileges with Azure Function Apps #attack, #azure

Undocumented APIs used by the Azure Function Apps Portal menu allowed for arbitrary file reads on the Function App containers.

Tools

copacetic

CLI tool for directly patching container images using reports from vulnerability scanners.

untitledgoosetool

An incident response tool that adds novel authentication and data gathering methods in order to run a full investigation against a customer's Azure Active Directory (AzureAD), Azure, and M365 environments.

aws-cost-cli

CLI tool to perform cost analysis on your AWS account with Slack integration.

shield-advanced

Scripts and Lambdas to help with automated deployment of AWS Shield Advanced.

amazon-cognito-passwordless-auth

Passwordless authentication with Amazon Cognito: FIDO2 (WebAuthn), Magic Link, SMS OTP Step Up.

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From the cloud providers

Simplify management of Network Firewall rule groups with VPC managed prefix lists

How to use managed prefix lists to simplify management of AWS Network Firewall rules and policies across a VPC.

How to use Amazon Macie to reduce the cost of discovering sensitive data

Macie offers several capabilities to help reduce the cost of discovering sensitive data, including automated data discovery, which can reduce your spend with new data sampling techniques that are custom-built for S3.

AWS Clean Rooms Now Generally Available: Collaborate with Your Partners without Sharing Raw Data

Clean Rooms is an analytics service that helps companies and their partners more easily and securely analyze and collaborate on their collective datasets without sharing or copying each other's data.

Use backups to recover from security incidents

Key AWS services and features that provide backup and recovery solutions to restore your data based upon the lessons the AWS CIRT has learned when supporting customers experiencing security events.

Your cloud, your way: Google Distributed Cloud Hosted is generally available

Google Distributed Cloud (GDC) Hosted is an air-gapped cloud solution for customers with stringent data management and sovereignty requirements.

General availability: Azure Virtual Network Manager

Azure Virtual Network Manager (AVNM) is now generally available. AVNM is a one-stop shop for managing the connectivity and security of your network resources at scale.

Generally available: Encryption scopes on hierarchical namespace enabled storage accounts

You can now use separate encryption keys for each customer in a single hierarchical namespace enabled storage account.

Public preview: Listener TLS certificates management available in the Azure portal

You can now manage the TLS certificates associated with Listeners through Azure portal.

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Thanks,
Marco

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