improve remediations - C-0020, C-0045

YiscahLevySilas1 commented 5 months ago

User description

Overview

Type

enhancement, bug_fix

Description

Enhanced volume and volumeMounts data extraction and remediation paths in Rego policies.
Updated expected test results to align with the new remediation paths logic.
Corrected test input to accurately test volumeMounts remediation.
Simplified readOnly volumeMounts remediation logic in Rego policies.

Changes walkthrough

Relevant files

Enhancement

raw.rego `Enhance Volume and VolumeMounts Data Extraction and Remediation` rules/alert-mount-potential-credentials-paths/raw.rego Refactored volume data extraction to include `spec` and `volumeMounts` data. Enhanced remediation paths to include both volume and volumeMounts paths. Simplified function `get_volumes` to `get_pod_spec` for clarity.	+24/-17
raw.rego `Simplify readOnly VolumeMounts Remediation Logic` rules/alert-rw-hostpath/raw.rego Simplified readOnly volumeMounts remediation logic. Removed unnecessary code paths and simplified remediation path generation.	+8/-37

Tests

expected.json `Update Expected Test Results for Enhanced Remediation Paths` rules/alert-mount-potential-credentials-paths/test/deployment_eks_failed/expected.json Updated expected test results to reflect new remediation paths including volumeMounts.	+12/-8
deployment.yaml `Correct Test Input for VolumeMounts Verification` rules/alert-mount-potential-credentials-paths/test/deployment_eks_failed/input/deployment.yaml - Corrected volume name in test input to match expected volumeMounts.	+1/-1
expected.json `Update Pod Configuration Test Results for Enhanced Remediation` rules/alert-mount-potential-credentials-paths/test/pod_eks_failed/expected.json Updated expected test results for Pod configuration to include volumeMounts paths.	+26/-22
expected.json `Update Expected Test Results for Simplified readOnly Remediation` rules/alert-rw-hostpath/test/deployment/expected.json Updated expected test results to reflect simplified readOnly remediation logic.	+51/-41

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codiumai-pr-agent-free[bot] commented 5 months ago

PR Description updated to latest commit (https://github.com/kubescape/regolibrary/commit/0cf5571692ce8fb13d014620b65fa90ea308c045)

github-actions[bot] commented 5 months ago

Summary:

License scan: failure
Credentials scan: failure
Vulnerabilities scan: failure
Unit test: success
Go linting: success

codiumai-pr-agent-free[bot] commented 5 months ago

PR Review

⏱️ Estimated effort to review [1-5]	2, because the changes are mostly focused on refactoring and enhancing existing logic with a clear focus on volume and volumeMounts handling in Rego policies. The PR is well-structured, making it easier to understand the intent behind the changes.
🧪 Relevant tests	Yes
🔍 Possible issues	Possible Bug: The refactoring changes the way volume mounts are handled by introducing a new function `get_pod_spec` and changing the logic in `is_unsafe_paths`. It's crucial to ensure that these changes do not inadvertently alter the behavior of the policy in edge cases not covered by the tests.
🔍 Possible issues	Performance Concern: The addition of `volume_mounts` function and its usage in `deny[msga]` could potentially increase the complexity and execution time of the policy, especially for resources with a large number of containers and volume mounts. It would be beneficial to evaluate the performance impact of these changes.
🔒 Security concerns	No

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codiumai-pr-agent-free[bot] commented 5 months ago

PR Code Suggestions

Category	Suggestions
Enhancement	Refactor repeated logic into a single function for better maintainability. ___ To enhance code maintainability and readability, consider refactoring the repeated logic in `get_pod_spec` for different Kubernetes resource kinds into a single function that handles all cases dynamically based on the resource kind. [rules/alert-mount-potential-credentials-paths/raw.rego [40-42]](https://github.com/kubescape/regolibrary/pull/617/files#diff-136b16029ff5e1abeae8c2e2fb8e805fb161d554291121483bbd6e9ac07c147bR40-R42) ```diff get_pod_spec(resources) := result { - resources.kind == "Pod" - result = {"spec": resources.spec, "start_of_path": "spec."} + kind_to_path := { + "Deployment": "spec.template.spec.", + "ReplicaSet": "spec.template.spec.", + "DaemonSet": "spec.template.spec.", + "StatefulSet": "spec.template.spec.", + "Job": "spec.template.spec.", + "Pod": "spec.", + "CronJob": "spec.jobTemplate.spec.template.spec." + } + start_of_path := kind_to_path[resources.kind] + result = {"spec": resources.spec, "start_of_path": start_of_path} } ```
	Add error handling to the `volume_mounts` function for unmatched volume names. ___ To ensure the robustness of the `volume_mounts` function, consider adding error handling or a default case to handle unexpected inputs or scenarios where the volume name does not match any in the `volumeMounts` list. [rules/alert-mount-potential-credentials-paths/raw.rego [95-97]](https://github.com/kubescape/regolibrary/pull/617/files#diff-136b16029ff5e1abeae8c2e2fb8e805fb161d554291121483bbd6e9ac07c147bR95-R97) ```diff -volume_mounts(name, volume_mounts, str) = [path] { +volume_mounts(name, volume_mounts, str) = result { + some j name == volume_mounts[j].name - path := sprintf("%s.volumeMounts[%v]", [str, j]) -} else = [] + result = [sprintf("%s.volumeMounts[%v]", [str, j])] +} else = {"error": "Volume name not found in volumeMounts"} ```
	Improve clarity by explicitly checking `readOnly` is `false` in `is_rw_mount`. ___ The `is_rw_mount` function could be enhanced by checking if `mount.readOnly` is explicitly set to `false` instead of just not being `true`. This would make the function's intent clearer and its behavior more predictable. [rules/alert-rw-hostpath/raw.rego [84-85]](https://github.com/kubescape/regolibrary/pull/617/files#diff-8fbf2825b670642de0825afe0191314b5c4edcec285e5fae9e73fbe80ff86cc4R84-R85) ```diff is_rw_mount(mount, start_of_path, i, k) = fix_path { - not mount.readOnly == true + mount.readOnly == false fix_path = {"path": sprintf("%vcontainers[%v].volumeMounts[%v].readOnly", [start_of_path, i, k]), "value":"true"} } ```
Maintainability	Merge `get_pod_spec` function definitions into a single function for efficiency. ___ To improve code efficiency and readability, consider merging the `get_pod_spec` function definitions into a single function that handles all cases using conditional logic. This approach reduces repetition and makes the code easier to maintain. [rules/alert-mount-potential-credentials-paths/raw.rego [40-42]](https://github.com/kubescape/regolibrary/pull/617/files#diff-136b16029ff5e1abeae8c2e2fb8e805fb161d554291121483bbd6e9ac07c147bR40-R42) ```diff get_pod_spec(resources) := result { - resources.kind == "Pod" - result = {"spec": resources.spec, "start_of_path": "spec."} + kind_to_path := { + "Deployment": "spec.template.spec.", + "ReplicaSet": "spec.template.spec.", + "DaemonSet": "spec.template.spec.", + "StatefulSet": "spec.template.spec.", + "Job": "spec.template.spec.", + "Pod": "spec.", + "CronJob": "spec.jobTemplate.spec.template.spec." + } + start_of_path := kind_to_path[resources.kind] + result = {"spec": resources.spec, "start_of_path": start_of_path} } ```

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kubescape / regolibrary