improve remediation - return fix path in every case

YiscahLevySilas1 commented 7 months ago

User description

Overview

Type

enhancement

Description

Simplified the logic for checking privilege escalation in containers by removing the return of paths from is_allow_privilege_escalation_container.
Introduced a new function get_fix_path to generate fix paths for adjusting container security contexts.
Updated expected test outputs for CronJob, Pod, and Workloads to align with the new fix path generation approach.

Changes walkthrough

Relevant files

Enhancement

raw.rego

Simplify Privilege Escalation Check and Introduce Fix Path Generation

rules/rule-allow-privilege-escalation/raw.rego

Simplified the is_allow_privilege_escalation_container function to no
longer return paths.

Introduced get_fix_path function to generate fix paths for security
context adjustments.

+17/-44

Tests

expected.json `Update Expected Test Output for CronJob` rules/rule-allow-privilege-escalation/test/cronjob/expected.json Updated expected test output to reflect changes in fix path generation.	+50/-46
expected.json `Update Expected Test Output for Pod` rules/rule-allow-privilege-escalation/test/pod/expected.json Updated expected test output for Pod to include new fix path structure.	+30/-19
expected.json `Update Expected Test Output for Workloads` rules/rule-allow-privilege-escalation/test/workloads/expected.json Adjusted expected test output for workloads to match new fix path logic.	+59/-46

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codiumai-pr-agent-free[bot] commented 7 months ago

PR Description updated to latest commit (https://github.com/kubescape/regolibrary/commit/9abea86e8e997954f5256078e364c3c6187a68c8)

codiumai-pr-agent-free[bot] commented 7 months ago

PR Review

⏱️ Estimated effort to review [1-5]	2, because the changes are mostly structural and involve refactoring existing logic without adding significant new functionality. The changes are straightforward and localized to specific functions, making it easier to review.
🧪 Relevant tests	Yes
🔍 Possible issues	Possible Bug: The refactored `is_allow_privilege_escalation_container` function no longer returns any paths (failed or fixed), which were previously used to generate alert messages. This change could potentially affect how alerts are generated and displayed, missing out on providing specific paths that need attention.
🔍 Possible issues	Consistency Issue: The removal of `get_failed_path` and `get_fixed_path` functions and the change in how `fixPath` is generated could lead to inconsistencies in how data is presented to the users, especially if other parts of the system still rely on the old structure.
🔒 Security concerns	No

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codiumai-pr-agent-free[bot] commented 7 months ago

PR Code Suggestions

Category	Suggestions
Enhancement	Simplify the logic in the `is_allow_privilege_escalation_container` function. ___ The conditions in the `is_allow_privilege_escalation_container` function seem to be overly complex and potentially redundant. Consider simplifying the logic by combining conditions that lead to the same outcome, and ensure that the logic accurately reflects the intended policy for handling privilege escalation in containers. [rules/rule-allow-privilege-escalation/raw.rego [69-73]](https://github.com/kubescape/regolibrary/pull/614/files#diff-13e6d2d500bd736926a934b7bc48bc076e22fac2adf9f80147047fbee89b5cdcR69-R73) ```diff is_allow_privilege_escalation_container(container) { - not container.securityContext.allowPrivilegeEscalation == false - not container.securityContext.allowPrivilegeEscalation == true + container.securityContext.allowPrivilegeEscalation psps := [psp \| psp= input[_]; psp.kind == "PodSecurityPolicy"] count(psps) == 0 } ```
	Make the `get_fix_path` function more flexible by parameterizing remediation values. ___ The `get_fix_path` function creates fix paths with hardcoded "false" values for security context settings. Consider parameterizing these values or providing a mechanism to specify different remediation actions based on the policy or context. [rules/rule-allow-privilege-escalation/raw.rego [100-102]](https://github.com/kubescape/regolibrary/pull/614/files#diff-13e6d2d500bd736926a934b7bc48bc076e22fac2adf9f80147047fbee89b5cdcR100-R102) ```diff -get_fix_path(i, start_of_path) = fixPath { - fixPath = [{"path": sprintf("%vcontainers[%v].securityContext.allowPrivilegeEscalation", [start_of_path, i]), "value":"false"}, - {"path": sprintf("%vcontainers[%v].securityContext.privileged", [start_of_path, i]), "value":"false"}] +get_fix_path(i, start_of_path, escalationValue, privilegedValue) = fixPath { + fixPath = [{"path": sprintf("%vcontainers[%v].securityContext.allowPrivilegeEscalation", [start_of_path, i]), "value": escalationValue}, + {"path": sprintf("%vcontainers[%v].securityContext.privileged", [start_of_path, i]), "value": privilegedValue}] } ```
	Streamline the logic for checking `allowPrivilegeEscalation` in the container security context. ___ The logic for checking `allowPrivilegeEscalation` within `is_allow_privilege_escalation_container` seems to be contradictory or redundant. Specifically, checking for both `not false` and `not true` conditions could be streamlined to directly assess the desired policy enforcement. [rules/rule-allow-privilege-escalation/raw.rego [69-71]](https://github.com/kubescape/regolibrary/pull/614/files#diff-13e6d2d500bd736926a934b7bc48bc076e22fac2adf9f80147047fbee89b5cdcR69-R71) ```diff is_allow_privilege_escalation_container(container) { - not container.securityContext.allowPrivilegeEscalation == false - not container.securityContext.allowPrivilegeEscalation == true + container.securityContext.allowPrivilegeEscalation == true } ```
Maintainability	Refactor repeated `is_allow_privilege_escalation_container` definitions into a single function. ___ The repeated definitions of `is_allow_privilege_escalation_container` with slight variations for handling PodSecurityPolicies (PSPs) could be refactored into a single, more concise function that handles all cases. This would improve maintainability and readability. [rules/rule-allow-privilege-escalation/raw.rego [69-83]](https://github.com/kubescape/regolibrary/pull/614/files#diff-13e6d2d500bd736926a934b7bc48bc076e22fac2adf9f80147047fbee89b5cdcR69-R83) ```diff is_allow_privilege_escalation_container(container) { - not container.securityContext.allowPrivilegeEscalation == false - not container.securityContext.allowPrivilegeEscalation == true + container.securityContext.allowPrivilegeEscalation psps := [psp \| psp= input[_]; psp.kind == "PodSecurityPolicy"] - count(psps) == 0 -} -is_allow_privilege_escalation_container(container) { - not container.securityContext.allowPrivilegeEscalation == false - not container.securityContext.allowPrivilegeEscalation == true - psps := [psp \| psp= input[_]; psp.kind == "PodSecurityPolicy"] - count(psps) > 0 - psp := psps[_] - not psp.spec.allowPrivilegeEscalation == false + count(psps) == 0 \|\| (count(psps) > 0 && psp := psps[_]; not psp.spec.allowPrivilegeEscalation == false) } ```
Best practice	Add validation checks in `get_fix_path` to ensure the integrity of generated paths. ___ Consider adding error handling or validation checks within `get_fix_path` to ensure that the indices and paths being generated are valid and do not lead to runtime errors or unintended behavior. [rules/rule-allow-privilege-escalation/raw.rego [100-102]](https://github.com/kubescape/regolibrary/pull/614/files#diff-13e6d2d500bd736926a934b7bc48bc076e22fac2adf9f80147047fbee89b5cdcR100-R102) ```diff get_fix_path(i, start_of_path) = fixPath { + # Validate i and start_of_path before proceeding + assert(i >= 0, "Container index must be non-negative.") + assert(start_of_path != "", "Start of path cannot be empty.") fixPath = [{"path": sprintf("%vcontainers[%v].securityContext.allowPrivilegeEscalation", [start_of_path, i]), "value":"false"}, {"path": sprintf("%vcontainers[%v].securityContext.privileged", [start_of_path, i]), "value":"false"}] } ```

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github-actions[bot] commented 7 months ago

Summary:

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

github-actions[bot] commented 7 months ago

Summary:

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

kubescape / regolibrary