CloudSec Wine

🔶 CVE-2021-38112: AWS WorkSpaces Remote Code Execution A vulnerability in the AWS WorkSpaces desktop client (CVE-2021-38112), which allows commands to be executed if a victim opens a malicious WorkSpaces URI from their browser. https://rhinosecuritylabs.com/aws/cve-2021-38112-aws-workspaces-rce/ #aws

🔶 AWS federation comes to GitHub Actions GitHub Actions has a new functionality that can vend OpenID Connect credentials to jobs running on the platform. This is very exciting for AWS account administrators as it means that CI/CD jobs no longer need any long-term secrets to be stored in GitHub. https://awsteele.com/blog/2021/09/15/aws-federation-comes-to-github-actions.html #aws

🔶 IAM Vulnerable - An AWS IAM Privilege Escalation Playground The IAM Vulnerable tool helps you learn how to identify and then exploit intentionally vulnerable IAM configurations that allow for privilege escalation. https://labs.bishopfox.com/tech-blog/iam-vulnerable-an-aws-iam-privilege-escalation-playground #aws

🔷 Agent Exposes Azure Customers To Unauthorized Code Execution Azure customers on Linux machines - which account for over half of all Azure instances according to Microsoft - are at risk if they use any of the services relying on OMI (Open Management Infrastructure), a Windows Management Infrastructure (WMI) for UNIX/Linux systems. The RCE is the simplest RCE you can ever imagine: simply remove the auth header and you are root. This Twitter thread is also useful to understand the impact of this flaw. https://www.wiz.io/blog/secret-agent-exposes-azure-customers-to-unauthorized-code-execution #azure

🔶 AWS Authentication: Principals in AWS IAM Newcomers to AWS can sometimes get confused by what it means to have AWS credentials. This article aims to explain the basics of AWS authentication, that is, the way you gain an identity that you can use to access AWS services. https://ben11kehoe.medium.com/principals-in-aws-iam-38c4a3dc322a #aws

🔴 Bypassing GCP Org Policy with Custom Metadata Google makes use of custom metadata to authorize access to AI Notebooks and their web UIs. Individuals granted access via custom metadata need not have any IAM permissions on the compute instance, on the service account running the Notebook or even be a member of the Organization. This kind of authorization bypasses a specific Organization Policy Constraint which restricts cross-domain resource sharing. https://kattraxler.github.io/gcp/hacking/2021/09/10/gcp-org-policy-bypass-ai-notebooks.html #gcp

🔷 Coordinated disclosure of vulnerability in Azure Container Instances Service Microsoft recently mitigated a vulnerability reported by a security researcher in the Azure Container Instances (ACI) that could potentially allow a user to access other customers information in the ACI service. Microsoft's investigation surfaced no unauthorized access to customer data. You can also check the original post disclosing the vulnerability and another that explains What to do? to address it. https://msrc-blog.microsoft.com/2021/09/08/coordinated-disclosure-of-vulnerability-in-azure-container-instances-service/ #azure

🔴 Automate Your Security in GCP with Serverless Computing Talk exploring serverless open source tools and other cloud-native options that allow you to automate your cloud security without the need for human interaction. https://youtu.be/jCQTeglIfeI #gcp

🔷 Azure-Pentest A collection of resources and notes useful for pentest and red team engagements against Azure. https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Methodology%20and%20Resources/Cloud%20-%20Azure%20Pentest.md #azure

🔶 Inside Figma: getting out of the (secure) shell Tips from the Figma security team to help other teams secure Systems Manager and protect their most sensitive data. https://www.figma.com/blog/inside-figma-getting-out-of-the-secure-shell/ #aws

🔷 ChaosDB: How we hacked thousands of Azure customers’ databases Researchers were able to gain complete unrestricted access to the accounts and databases of several thousand Microsoft Azure customers. Also refer to the companion blog post to learn how to protect your environment from ChaosDB. https://www.wiz.io/blog/chaosdb-how-we-hacked-thousands-of-azure-customers-databases #azure

🔶 Security Implication of Root principal in AWS An interesting way of abusing the AWS KMS for data exfiltration in restricted VPCs. https://niebardzo.github.io/2021-08-23-root-principal-in-aws/ #aws

🔷 Illogical Apps - Exploring and Exploiting Azure Logic Apps How to obtain sensitive information as an user with the Reader role, and how to identify/abuse API Connection hijack scenarios as a Contributor in Azure Logic Apps. https://www.netspi.com/blog/technical/cloud-penetration-testing/illogical-apps-exploring-exploiting-azure-logic-apps/ #azure

🔶 AWS OIDC Authentication with SPIFFE How to authenticate data center applications to AWS using automated SPIFFE credentials. https://developer.squareup.com/blog/aws-oidc-authentication-with-spiffe/ #aws

🔴 Using the new Google Cloud Config Controller to provision and manage cloud services via the Kubernetes Resource Model How to manually configure a GKE cluster, and how to use the new Config Controller to provision and configure services via automation. https://seroter.com/2021/08/18/using-the-new-google-cloud-config-controller-to-provision-and-manage-cloud-services-via-the-kubernetes-resource-model/ #gcp

Yandex Cloud Security Checklist Dear friends, we have prepared for you the first checklist on the secure configuration of Yandex.Cloud. It is based on an aggregation of everything that is in the YC documentation on the topic of security, plus some experience revealed in the framework of audits. Globally, the checklist is split into network security and access control domains. The main problem is that almost all the security mechanisms (security groups, audit trails), which are already few, are either in the preview stage or are connected on-demand. The rest of the mechanisms are connected through the marketplace from several of third-party commercial solutions. UPD. By the way, if you want to pass some of the checks by automated means, then we recommend Cloud Advisor. There, in particular, there is still the opportunity to conduct a free scan. #yandex

Yandex Cloud Security Checklist Друзья, подготовили для Вас первый чеклист по безопасной конфигурации Яндекс.Облака. В основе лежит агрегация всего, что есть в документации YC на тему безопасности, плюс некоторый собственный опыт, выявленный в рамках аудитов. Глобально чеклист разбит на домены сетевой безопасности и контроля доступа. Основная проблема в том, что почти все механизмы безопасности (Security Groups, Audit Trails), которых и так немного, находятся либо на стадии Preview, либо подключаются по запросу. Остальные механизмы подключаются через маркетплейс из числа сторонних коммерческих решений. UPD. Кстати, если хотите часть проверок пройти автоматизированными средствами, то рекомендуем Cloud Advisor. Там, в частности, пока еще есть возможность провести бесплатное сканирование. #yandex

🔶 The last S3 security document that we’ll ever need, and how to use it 163 page Threat Model of S3 by TrustOnCloud’s Jonathan Rault covering: 1️⃣ Best practices (best security/effort ratio) 2️⃣ Reviewing the service depending on your application(s), and implementing the controls based on your risk tolerance 3️⃣ Onboarding for large enterprises/agencies 4️⃣ Compliance mapping to demonstrate a risk-based approach, gap analysis and formulating an action plan https://trustoncloud.com/the-last-s3-security-document-that-well-ever-need/ #aws