The AWS AppSync service could be coerced to assume arbitrary roles in other customers' accounts which trusted the AppSync service. This was due to insufficient validation of a serviceRoleArn parameter (caused by a case-sensitivity parsing issue). With this vulnerability, if an adversary knew the ARN of the role associated with AppSync in the target account, they could use it invoke arbitrary AWS API calls.
Binary Security discovered and registered two dangling cloudapp.azure.com subdomains corresponding to subdomains at visualstudio.com. Had these been discovered and registered by an attacker, this would have been equivalent to a 1-click vulnerability for Azure DevOps: the attacker could have crafted a URL referring to the sign-in API for Azure DevOps Services (app.vssps.visualstudio.com) using one of the two subdomains in the "reply_to" field (since subdomains of visualstudio.com would be allowe…
Azure CLI contained a code injection vulnerability that could be exploited in a scenario where the host runs a command where parameter values have been provided by an external untrusted source - these could be specially crafted in such a way as to exploit the vulnerability, leading to remote code execution on the host. The vulnerability is only applicable when the Azure CLI command is run on a Windows machine and with any version of PowerShell and when the parameter value contains the `&` or `|…
In September 22', SOCRadar discovered an insecure public Azure blob storage owned by Microsoft (olyympusv2.blob.core.windows[.]net). This blob storage was used for storing emails and other documents from interactions with their customers (such as contracts and purchase orders). In total, the blob storage contained 2.4TB of data with information concerning thousands of Microsoft customers across dozens of countries, dated between 2017 and August 22'. Following disclosure, Microsoft reconfigured …
Service Fabric Explorer (SFX) is a tool for inspecting and managing Azure Service Fabric clusters. An attacker with existing access to a "Deployer" type user with CreateComposeDeployment permissions in a given cluster could create a malicious application with a specially-crafted name. This would lead to client-side template injection (CSTI) and storing a malicious XSS payload in a dashboard shared between users of the same cluster. If a victim user with administrative permissions logged into th…
Azure Arc allows customers to connect on-premises Kubernetes clusters to Azure. This is facilitated by middleware (the Azure Arc-enabled Kubernetes agent) which includes a "cluster connect" feature in the form of a reverse proxy. A vulnerability in this feature could allow an unauthenticated user to elevate their privileges and potentially gain remote administrative control over any Azure Arc-enabled cluster, as long as they know its randomly generated external DNS endpoint. Azure Stack Edge de…
An issue in Azure Cloud Shell could have allowed an attacker to take over an Azure App Service domain and leverage it to inject and execute commands in other tenants' terminals if they navigated to the domain while logged into their account. Using this method, an attacker could query the Azure IMDS on other tenants' behalf and thereby obtain their access tokens.
Azure Synapse Analytics is an analytics service for processing data using various runtimes, among them Apache Spark. Synapse provided users the capability to mount Azure File Shares to their Apache Spark Pools via a script called filesharemount.sh that would execute with elevated privileges. This script would mount the File Share to the /synfs directory. There was a race condition in the script where, if successfully exploited, a user could execute the chown command to change the ownership of a…
Amazon SNS' signature validation in the official SDK relied on a weak regex for default AWS certificate locations, that would incorrectly match an S3 bucket named `sns`. This bucket happened to be publicly readable and writeable, allowing an attacker to forge messages to any user of the official SDK SNS validator.
In GCP's case, they introduced a modification to the Cloud SQL's PostgreSQL engine allowing the role assigned to the tenant (cloudsqlsuperuser) to arbitrarily change the ownership of a table to any user or role in the database. Thus, an attacker could (1) create a new table, (2) create an index function with a malicious payload, and (3) change the table owner to GCP’s superuser role (cloudsqladmin). Next, by initiating an ANALYZE command, the malicious function is executed with GCP’s superuser …
A vulnerability was discovered in Cloud Shell that enabled command injection and remote shell access. By manipulating the "project" parameter, an attacker could have cause an unencoded Python script execution flaw. Exploiting this flaw, they could inject a command to display the contents of the "/etc/passwd" file, successfully execute arbitrary commands and obtain remote shell access. However, the impact of this is unclear, as an attacker would seemingly only be able to gain such a remote shell…
If a malicious actor with prior access to an AWS environment has permission to modify the S3 Replication Service role access policy, they could abuse cross-account replication to exfiltrate stolen data to an external bucket under their control. Moreover, when configured to replicate to multiple buckets at once, and if logging is only scoped to specific buckets (as opposed to being set to log "all current and future buckets"), then the S3 Replication Service only logs a putObject event to CloudT…
A critical security flaw in Google Cloud Platform's Cloud Workstations allows unauthorized access and privilege escalation. The vulnerability stems from persistent session management, enabling users to access and exploit credentials of higher-privileged users. This can lead to impersonation, creation of new service accounts with elevated permissions, and bypassing of access controls.
AWS CodeArtifact was susceptible to dependency confusion / substitution (i.e, publication of a malicious package to a public repository with the same name as an organization’s internal package). AWS fixed this issue by adding package origin controls, allowing users to limit how versions of a given package can be added to a CodeArtifact repository.
The Microsoft Azure Site Recovery suite contained a DLL hijacking flaw that allowed for privilege escalation from any low privileged user to SYSTEM on hosts where this service was installed. Incorrect permissions on the cxprocessserver service's executable directory allowed new files to be created in it by any user. Since the service ran automatically and with SYSTEM privileges and attempted to load DLLs from the directory, this allowed for a DLL hijacking / planting attack.
Amazon Elastic Kubernetes Service (EKS) uses IAM to provide authentication to the cluster through the AWS IAM Authenticator for Kubernetes (aws-iam-authenticator). aws-iam-authenticator can be installed on any Kubernetes cluster, and it is installed by default in any EKS cluster both on AWS cloud and on-premises (Amazon EKS Anywhere). A security issue was discovered in aws-iam-authenticator where an allow-listed IAM identity may be able to modify their username and escalate privileges. The bug …
A vulnerability in Service Fabric allows Linux containers to escalate their privileges in order to gain root privileges on the node, and then compromise all of the nodes in the cluster. An attacker would need to have read/write access to the cluster, and the vulnerability could be exploited on containers that are configured to have runtime access, but this is granted by default to every container. Though the bug exists in both the Windows and Linux versions, it is only exploitable on Linux.
Azure forces the install of an agent on Linux VMs, which contained a vulnerability that allowed privilege escalation (note that this vulnerability is different than OMIGOD, which also resided in the OMI agent).
Executing Cloud Functions or Cloud Run in any project and in any organization allowed bypassing the GKE Authorized Networks (aka Kubernetes control plane firewalls) of a cluster in a different project or organization.
Two API calls used by Amazon Managed Workflows for Apache Airflow (MWAA) to convert AWS IAM credentials into tokens that can be used to login to Airflow (CreateCliToken and CreateWebLoginToken) were logging the tokens to Cloudtrail. The event included the hostname for the airflow server, so everything required to login to Airflow was in the event. However, the issue was largely mitigated by the fact that the tokens are only valid for 60 seconds and CloudTrail delivers logs on average about ever…
While testing rate-limiter protection, The researcher noticed that when forcing HTTP/1 requests and injecting a space after `X-Forwarded-For` he was able to override this specific header, letting him impersonate any IP. Any internal header could have beem overridden, also the one that should not be exposed/forwarded by the client, such as `CloudFront-Viewer-Country-Region` or any other `CloudFront` enhanced header. This special security issue was affecting all AWS users with that a specific set…
Azure Synapse Analytics and Azure Data Factory were vulnerable to cross-tenant access and code execution. This was made possible via a combination of (1) a shell injection RCE vulnerability in the integration runtime, (2) credentials for multiple customers stored on a shared host and (3) an insecure management server API.
Two malicious versions were created of packages previously used by AWS. The packages were officially authored and maintained by AWS before they were removed by their legitimate author, and once the packages were removed, their names became available and the two packages were then populated with malicious code. If AWS-deployed software had any dependencies on these packages, this would have led to a dependency confusion attack.
A chain of critical vulnerabilities was discovered in Azure Database for PostgreSQL Flexible Server, allowing unauthorized read access to other customers’ PostgreSQL databases, thus bypassing tenant isolation. If exploited, a malicious actor could have replicated and gained read access to Azure PostgreSQL Flexible Server customer databases.
The Amazon SSM Agent (used for managing EC2 instances via Amazon Systems Manager) created a world-writable sudoers file, which would have allowed local attackers to inject Sudo rules and escalate privileges to root. This could occur in certain situations involving a race condition.
AWS's hotpatches for Log4shell worked as intended but introduced new container escape vulnerabilities.
The AWS VPN Client application is affected by an arbitrary file write as SYSTEM, which can lead to privilege escalation and an information disclosure vulnerability that allows the user's Net-NTLMv2 hash to be leaked via a UNC path in a VPN configuration file.
A vulnerability was discovered in the Aurora PostgreSQL log_fdw extension for Amazon Relational Database Service (RDS), allowing an attacker to read files on the EC2 host and obtain credentials for an internal AWS service.
Undocumented Azure AD APIs could allow access to internal information of any organization that uses Azure AD. Collected details included licensing information, mailbox information, and directory synchronization status.
The AWS RDS service does not enable secure transport layer security by default, allowing clients to connect insecurely. Additionally, for the more commonly used MySQL and MariaDB RDS engine types, this setting cannot be enabled at all.
