Release Date: 23/04/2023 | Issue: 184

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

Data Driven Detection Engineering #strategy

A post arguing for stronger software engineering skills in cybersecurity, and a focus on data engineering.

Mind The Gap - Bringing Together Cloud Services and Managed K8s Environments #explain, #kubernetes

Slides from a KubeCon EU 2023 talk which describes common security pitfalls in managed Kubernetes environments.

State of Cloud Threat Detection and Response Report #strategy

A report which summarizes the survey responses of 400 security leaders and SecOps practitioners in North America regarding the capabilities, practices, and behaviors of protecting against, identifying, and remediating cloud-based threats.

Crafting Container Images That Won't Drive You Crazy #build, #containers, #explain

Jetstack shares some container security best practices, including using minimal base images, running as non-root users, managing secrets, signing images, and generating SBOMs.

Cloud Red Teaming: AWS Initial Access & Privilege Escalation #attack, #aws, #azure, #gcp

Slides from a session that covered the latest cloud focused attack vectors and described viable strategies on how to detect their malicious usage within your cloud environments.

Container security fundamentals part 3: Capabilities #containers, #explain

A look at how capabilities are used in Linux and container systems.

Detecting the Use of Stolen AWS Lambda Credentials #aws, #monitor

A novel technique which uses AWS CloudTrail to detect the use of stolen credentials.

New Phone, Who Dis? How Cloud Environments Are Exploited for Smishing Campaigns #attack, #aws

Commodity threat actors have recently begun to exploit cloud environments for smishing campaigns, employing techniques strikingly similar to those used in SES enumeration and abuse.

Hacking Your Cloud: Tokens Edition 2.0 #attack, #azure

Techniques attackers might use to exploit cloud tokens and gain access to resources. Strong token management, limiting privileges, and token revocation policies help mitigate risks.

BrokenSesame: Accidental write permissions to private registry allowed potential RCE to Alibaba Cloud Database Services #alibaba, #attack

A container escape vulnerability, combined with accidental 'write' permissions to a private registry, opened a backdoor for Wiz Research to access Alibaba Cloud databases and potentially compromise its services through a supply-chain attack.

Asset Key Thief security vulnerability technical details #attack, #gcp

A persistent Service Account private key exfiltration privilege escalation technique that potentially affected Google Cloud Service Accounts, now remediated promptly by the Google Cloud team.

First-Ever Attack Leveraging Kubernetes RBAC to Backdoor Clusters #attack, #kubernetes

For the first time evidence that attackers are exploiting Kubernetes Role-Based Access Control (RBAC) in the wild to create backdoors.

Kubernetes 1.24 Security Audit #attack, #kubernetes

NCC Group performed a security evaluation of Kubernetes 1.24.0 release. Key findings included concerns with the administrative experience, flaws in communication between the API Server and the Kubelet which may result in an elevation of privilege, and flaws in input sanitization which provide a limited authorization bypass.

Kubernetes 1.27: Query Node Logs Using The Kubelet API #kubernetes, #monitor

Kubernetes 1.27 introduced a new feature called Node log query that allows viewing logs of services running on the node.

SLSA v1.0 is now final! #announcement, #supply-chain

After almost two years since SLSA's initial preview release, the first official stable version, SLSA v1.0, has been released.

Tools

managed-kubernetes-auditing-toolkit

All-in-one auditing toolkit for identifying common security issues in managed Kubernetes environments.

awesome-layers

A curated list of awesome AWS Lambda Layers.

github-audit-alerter

Slack alert bot for matching Github Audit Events.

iam-access-key-report

A tool that will enumerate data about all active IAM access keys across an AWS Organization and will enrich each key with account tag information.

edge

Recon tool for cloud provider attribution.

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From the cloud providers

Scale your authorization needs for Secrets Manager using ABAC with IAM Identity Center

How to use principles of attribute-based access control (ABAC) to define dynamic IAM permission policies in AWS IAM Identity Center by using user attributes from an external identity provider (IdP) and resource tags in Secrets Manager.

How to implement a centralized immutable backup solution with AWS Backup

Post walking through different AWS Backup features that you can use to implement a centralized immutable backup solution to implement protections against unauthorized access to your backup data in your central backup account.

How to prioritize IAM Access Analyzer findings

IAM Access Analyzer helps to identify resource policies that allow public access, and prioritizing the findings can be done by focusing on resources that are critical to business operations and data privacy. Use resource tagging for easier organization and filtering, and continuously monitor and remediate findings.

Use IAM roles to connect GitHub Actions to actions in AWS

This post focuses on creating an IAM OIDC identity provider for GitHub and demonstrates how to authorize access into an AWS account from a specific branch and repository.

Take control of your supply chain with Artifact Registry

Remote and virtual repositories from Google Cloud Artifact Registry can help add assurance to your software supply chain.

Migrate from PSP policies to Policy Bundle

How to migrate Pod Security Policies (PSPs) to the new format in the Kubernetes 1.21 release.

Running Infrastructure-as-Code with the least privilege possible

Google service account impersonation lets you run your terraform code and manage resources without overly broad access.

Access managed services globally with Private Service Connect

Private Service Connect offers secure, private connectivity to managed services, which are now accessible by hybrid networks and for global services.

Announcing the general availability of Azure CNI Overlay in Azure Kubernetes Service

Azure CNI Overlay assigns IP addresses from the user-defined overlay address space instead of using IP addresses from the VNET. It uses the routing of these private address spaces as a native virtual network feature. This means that cluster nodes do not need to perform any extra encapsulation to make the overlay container network work.

Istio-based service mesh add-on for Azure Kubernetes Service

Microsoft introduced the public preview of the Istio add-on for Azure Kubernetes Service.

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Marco

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