Cloud Foundry Cloud Controller, capi-release versions prior to 1.0.0 and cf-release versions prior to v237, contain a business logic flaw. An application developer may create an application with a route that conflicts with a platform service route and receive traffic intended for the service.
Applications in cf-release before 245 can be configured and pushed with a user-provided custom buildpack using a URL pointing to the buildpack. Although it is not recommended, a user can specify a credential in the URL (basic auth or OAuth) to access the buildpack through the CLI. For example, the user could include a GitHub username and password in the URL to access a private repo. Because the URL to access the buildpack is stored unencrypted, an operator with privileged access to the Cloud Controller database could view these credentials.
Cloud Foundry Garden-runC, versions prior to 1.11.0, contains an information exposure vulnerability. A user with access to Garden logs may be able to obtain leaked credentials and perform authenticated actions using those credentials.
Cloud Foundry Cloud Controller, versions prior to 1.52.0, contains information disclosure and path traversal vulnerabilities. An authenticated malicious user can predict the location of application blobs and leverage path traversal to create a malicious application that has the ability to overwrite arbitrary files on the Cloud Controller instance.
Cloud Foundry Silk CNI plugin, versions prior to 0.2.0, contains an improper access control vulnerability. If the platform is configured with an application security group (ASG) that overlaps with the Silk overlay network, any applications can reach any other application on the network regardless of the configured routing policies.
In Cloud Controller versions prior to 1.46.0, cf-deployment versions prior to 1.3.0, and cf-release versions prior to 283, Cloud Controller accepts refresh tokens for authentication where access tokens are expected. This exposes a vulnerability where a refresh token that would otherwise be insufficient to obtain an access token, either due to lack of client credentials or revocation, would allow authentication.
In cf-deployment before 1.14.0 and routing-release before 0.172.0, the Cloud Foundry Gorouter mishandles WebSocket requests for AWS Application Load Balancers (ALBs) and some other HTTP-aware Load Balancers. A user with developer privileges could use this vulnerability to steal data or cause denial of service.
In Garden versions 0.22.0-0.329.0, a vulnerability has been discovered in the garden-linux nstar executable that allows access to files on the host system. By staging an application on Cloud Foundry using Diego and Garden installations with a malicious custom buildpack an end user could read files on the host system that the BOSH-created vcap user has permissions to read and then package them into their app droplet.
An issue was discovered in these Pivotal Cloud Foundry products: all versions prior to cf-release v270, UAA v3.x prior to v3.20.2, and UAA bosh v30.x versions prior to v30.8 and all other versions prior to v45.0. A cross-site scripting (XSS) attack is possible in the clientId parameter of a request to the UAA OpenID Connect check session iframe endpoint used for single logout session management.
An issue was discovered in Cloud Foundry Foundation capi-release (all versions prior to 1.45.0), cf-release (all versions prior to v280), and cf-deployment (all versions prior to v1.0.0). The Cloud Controller does not prevent space developers from creating subdomains to an already existing route that belongs to a different user in a different org and space, aka an "Application Subdomain Takeover."