🔶 Hacking Github AWS integrations again

Another post looking at the perils of unproperly scoping access provided by OIDC.

https://dagrz.com/writing/aws-security/hacking-github-aws-oidc

#aws

🔶 AWS Security Monitoring in 2023: Untangle the chaos

This post provides recommendations for implementing an effective security monitoring strategy in AWS.

https://marbot.io/blog/2023-08-04-aws-security-monitoring-in-2023.html

#aws

🔶 SSRF Tricks - Thread

Some tricks «rhynorater» picked up over the past 5 years of web app testing.

https://x.com/rhynorater/status/1689400476452679682?s=52&t=J3j_Bp59pI4rfliKITPeZQ

(Use VPN to open from Russia)

#aws

🔷 An Azure Tale of VPN, Conditional Access and MFA Bypass

A walkthrough review of the implementation of an on-prem VPN server that used Azure AD as the idP and enforced MFA via conditional access policies.

https://simondotsh.com/infosec/2023/08/15/azure-tale-vpn-ca-mfa-bypass.html

#azure

🔶 When a Zero Day and Access Keys Collide in the Cloud: Responding to the SugarCRM Zero-Day Vulnerability

Threat actors used SugarCRM's zero-day CVE-2023-22952 and cloud account misconfigurations to access credentials.

https://unit42.paloaltonetworks.com/sugarcrm-cloud-incident-black-hat

#aws

🔶 Identifying & Reducing Permission Explosion in AWS

The slides of a BlackHat 2023 talk that discusses how to identify, fix, and prevent permission explosion in your AWS environment.

https://i.blackhat.com/BH-US-23/Presentations/US-23-Moolrajani-Reducing-AWS-Permission-Explosion.pdf

#aws

🔶 How to setup geofencing and IP allow-list for Cognito user pool

AWS recently announced that is now possible to enable WAF protection for Cognito user pools. And one of the things you can do with this is to implement geo-fencing and IP allow/deny lists.

https://theburningmonk.com/2022/08/how-to-setup-geofencing-and-ip-allow-list-for-cognito-user-pool/

#aws

🔶 Terraform best practices for reliability at any scale

At scale, many Terraform state files are better than one. But how do you draw the boundaries and decide which resources belong in which state files? What are the best practices for organizing Terraform state files to maximize reliability, minimize the blast-radius of changes, and align with the design of cloud providers?

https://substrate.tools/blog/terraform-best-practices-for-reliability-at-any-scale

#aws

🔶 Methods to Backdoor an AWS Account

Post exploring some methods that an adversary can use to create backdoors in your AWS account: access keys, AssumeRole, changing Security Groups, UserData scripts, and SSM Send-Command.

https://mystic0x1.github.io/posts/methods-to-backdoor-an-aws-account/

#aws

🔶 Pivoting Clouds in AWS Organizations: Examining AWS Security Features and Tools for Enumeration

The architecture and considerable number of enabled/delegated service possibilities in AWS Organizations presents a serious vector for lateral movement within corporate environments. This could easily turn a single AWS account takeover into a multiple account takeover.

https://www.netspi.com/blog/technical/cloud-penetration-testing/pivoting-clouds-aws-organizations-part-2/

#aws

🔶 Risk in AWS SSM Port Forwarding

A surprising AWS Systems Manager Session Manager (SSM) default that can introduce risk, especially for customers using SSM's Port Forwarding features.

https://ramimac.me/ssm-iam

#aws

🔶 Shipping RDS IAM Authentication (with a bastion host & SSM)

A basic guide to getting RDS IAM Authentication set up when you're using a Private Endpoint.

https://ramimac.me/rds-iam-auth

#aws

🔷 New zero trust and digital sovereignty controls in Workspace, powered by AI

Google announced new zero trust, digital sovereignty, and threat defense controls powered by Google AI to help organizations keep their data safe.

https://workspace.google.com/blog/identity-and-security/accelerating-zero-trust-and-digital-sovereignty-ai

#azure

🔷 How to Detect When an Azure Guest User Account Is Being Exploited

In Azure environments, guest users are the go-to option when giving access to a user from a different tenant. However, this could prove to be a costly mistake.

https://orca.security/resources/blog/detect-guest-user-account-exploited

#azure

🔴 Grafana security update: GPG signing key rotation

Grafana signing keys have been exposed. Be sure to update their trusted certificate if you are a Grafana user.

https://grafana.com/blog/2023/08/24/grafana-security-update-gpg-signing-key-rotation/

#gcp

🔶 Authorizing cross-account KMS access with aliases

KMS aliases are a great way to make KMS keys more convenient. But permitting one account to use an KMS key in another account through a KMS alias can be difficult. This article explains why, and how to solve the problem correctly.

https://lucvandonkersgoed.com/2023/08/25/authorizing-cross-account-kms-access-with-aliases

#aws

🔷 5 Tips to prevent or limit the impact of an incident in Azure

Five low-cost and easy to implement measures with high-impact to prevent or limit the impact of an incident in Azure: setup budget quotas, restrict app registration, prevent subscriptions from entering your tenant, ingest audit logging, and limit external collaboration.

https://invictus-ir.medium.com/5-tips-to-prevent-or-limit-the-impact-of-an-incident-in-azure-e9f664fe0100

(Use VPN to open from Russia)

#azure

🔶 Verifying images in a private Amazon ECR with Kyverno and IAM Roles for Service Accounts (IRSA)

Applications, such as Kyverno, running within a Pod's containers can utilize the AWS SDK to make API requests to AWS services by leveraging AWS Identity and Access Management (IAM) permissions.

https://www.cncf.io/blog/2023/08/29/verifying-images-in-a-private-amazon-ecr-with-kyverno-and-iam-roles-for-service-accounts-irsa/

#aws

🔶🔷🔴 New Attack Vector In The Cloud: Attackers caught exploiting Object Storage Services

Security Joes Incident Response team recently became aware of a set of relatively new CVEs that were released at the end of March 2023. Surprisingly, these vulnerabilities have received little to no media coverage regarding their ease of exploitation and the potential security implications they pose to any cluster running a non-native object storage.

https://www.securityjoes.com/post/new-attack-vector-in-the-cloud-attackers-caught-exploiting-object-storage-services

#aws #azure #gcp

🔶 Cloud Detection and Response Needs To Break Down Boundaries

The attack patterns of the modern day threat actor are changing as they are able to traverse across multiple environments in the cloud. CDR needs to keep up.

https://permiso.io/blog/cloud-detection-and-response-needs-to-break-down-boundaries

#aws