Summary
Apache Camel Karavan insufficiently validates resources defined in a project's kubernetes.yaml during deployment. An authenticated user, including users with otherwise limited roles, may cause Karavan to apply security-sensitive Kubernetes resources within the permissions of its service account.
Apache Camel Karavan insufficiently validates resources defined in a project's kubernetes.yaml during deployment. An authenticated user, including users with otherwise limited roles, may cause Karavan to apply security-sensitive Kubernetes resources within the permissions of its service account.
Affected context
The issue occurs in Karavan deployments that process project-defined Kubernetes manifests and apply their contents to a cluster. Risk increases when the Karavan service account has broad permissions, when the target namespace is not tightly constrained, or when pod security controls allow host-level access and privileged workload settings.
The issue occurs in Karavan deployments that process project-defined Kubernetes manifests and apply their contents to a cluster. Risk increases when the Karavan service account has broad permissions, when the target namespace is not tightly constrained, or when pod security controls allow host-level access and privileged workload settings.
Exploit preconditions
- Attack surface: Karavan's deployment workflow and project
kubernetes.yamlprocessing - Required access: Authenticated access to Karavan with permissions to initiate or influence a deployment
- Trigger point: Deployment startup, when the project manifest is unmarshalled and submitted to Kubernetes
- Why exploitation is possible: Resource kinds, target namespaces, and security-sensitive pod options are not sufficiently restricted before resources are applied
- Attack surface: Karavan's deployment workflow and project
kubernetes.yamlprocessing - Required access: Authenticated access to Karavan with permissions to initiate or influence a deployment
- Trigger point: Deployment startup, when the project manifest is unmarshalled and submitted to Kubernetes
- Why exploitation is possible: Resource kinds, target namespaces, and security-sensitive pod options are not sufficiently restricted before resources are applied
Why this happens
The vulnerability results from treating user-influenced Kubernetes manifest content as deployable configuration without enforcing an allowlist of resource kinds, approved namespaces, and safe pod security properties. This behavior maps to CWE-20: Improper Input Validation, because structurally valid but security-sensitive input is accepted without adequately checking whether it is permitted in the deployment context.
The vulnerability results from treating user-influenced Kubernetes manifest content as deployable configuration without enforcing an allowlist of resource kinds, approved namespaces, and safe pod security properties. This behavior maps to CWE-20: Improper Input Validation, because structurally valid but security-sensitive input is accepted without adequately checking whether it is permitted in the deployment context.
Potential impact
- Unauthorized creation or modification of Kubernetes resources
- Execution of workloads with host networking, process, or IPC access
- Access to host files through hostPath volumes
- Exposure of host ports or sensitive cluster services
- Privilege escalation through privileged containers, added capabilities, or related options
- Compromise of workloads or cluster resources reachable by the service account
- Data disclosure, service disruption, or persistence within the cluster
- Unauthorized creation or modification of Kubernetes resources
- Execution of workloads with host networking, process, or IPC access
- Access to host files through hostPath volumes
- Exposure of host ports or sensitive cluster services
- Privilege escalation through privileged containers, added capabilities, or related options
- Compromise of workloads or cluster resources reachable by the service account
- Data disclosure, service disruption, or persistence within the cluster
General mitigation guidance
Mitigation generally focuses on making deployment input narrowly scoped and secure by default.
Common defensive patterns include:
- Allowing only explicitly approved Kubernetes resource kinds
- Pinning deployments to an authorized namespace and rejecting namespace overrides
- Rejecting hostNetwork, hostPID, hostIPC, hostPath, host ports, privileged containers, privilege escalation, and unauthorized capabilities unless explicitly required and separately approved
- Validating manifests against a strict schema and organizational policy before submission
- Running the deployment service account with least-privilege permissions
- Applying admission controls and workload security policies as defense in depth
- Separating project authors from users who can deploy security-sensitive resources
These controls reduce reliance on user-provided manifest content and limit the consequences of validation failures.
Mitigation generally focuses on making deployment input narrowly scoped and secure by default.
Common defensive patterns include:
- Allowing only explicitly approved Kubernetes resource kinds
- Pinning deployments to an authorized namespace and rejecting namespace overrides
- Rejecting hostNetwork, hostPID, hostIPC, hostPath, host ports, privileged containers, privilege escalation, and unauthorized capabilities unless explicitly required and separately approved
- Validating manifests against a strict schema and organizational policy before submission
- Running the deployment service account with least-privilege permissions
- Applying admission controls and workload security policies as defense in depth
- Separating project authors from users who can deploy security-sensitive resources
These controls reduce reliance on user-provided manifest content and limit the consequences of validation failures.
How teams detect issues like this
Organizations can identify this class of issue through:
- Static analysis and code review checks for unrestricted Kubernetes manifest application
- Searches for missing resource-kind allowlists, namespace enforcement, and pod-security validation
- Policy checks covering host namespaces, hostPath volumes, privileged containers, capabilities, and privilege escalation
- Audit-log monitoring for unexpected resource kinds, namespaces, or security-sensitive pod settings
- CI and admission-policy validation of generated Kubernetes manifests
- Automated security review tools that flag excessive service-account permissions and unsafe workload attributes
Organizations can identify this class of issue through:
- Static analysis and code review checks for unrestricted Kubernetes manifest application
- Searches for missing resource-kind allowlists, namespace enforcement, and pod-security validation
- Policy checks covering host namespaces, hostPath volumes, privileged containers, capabilities, and privilege escalation
- Audit-log monitoring for unexpected resource kinds, namespaces, or security-sensitive pod settings
- CI and admission-policy validation of generated Kubernetes manifests
- Automated security review tools that flag excessive service-account permissions and unsafe workload attributes
Sources
| Source | Link |
|---|---|
| camel. | camel.apache.org/ |
| github. | github.com/ |
| openwall. | openwall.com/ |
