kubescape / node-agent

Kubescape eBPF agent 🥷🏻
https://kubescape.io/
Apache License 2.0
8 stars 5 forks source link

fixed rule #233

Closed dwertent closed 8 months ago

dwertent commented 8 months ago

User description

Overview


Type

bug_fix, enhancement


Description


Changes walkthrough

Relevant files
Enhancement
cache.go
Enhance Logging for Global Rule Binding Addition                 

pkg/rulebindingmanager/cache/cache.go
  • Changed log level from Debug to Info when adding a global rule
    binding.
  • +1/-1     
    r1000_exec_from_malicious_source.go
    Improve Malicious Source Detection Logic in Rule R1000     

    pkg/ruleengine/v1/r1000_exec_from_malicious_source.go
  • Imported filepath package for path manipulation.
  • Modified the path check to use directory path instead of exact path in
    malicious source detection.
  • +2/-1     
    Tests
    r1000_exec_from_malicious_source_test.go
    Extend Test Coverage for Rule R1000 Malicious Source Detection

    pkg/ruleengine/v1/r1000_exec_from_malicious_source_test.go
  • Added new test cases for ProcessEvent function in rule R1000 to cover
    various scenarios including non-ExecveEventType, non-malicious source,
    and malicious source.
  • +59/-0   
    Bug_fix
    watch.go
    Remove Warning Log on Resource Listing Failure                     

    pkg/watcher/dynamicwatcher/watch.go
  • Removed warning log when failing to list resources, opting for a
    silent retry mechanism.
  • +1/-3     

    PR-Agent usage: Comment /help on the PR to get a list of all available PR-Agent tools and their descriptions

    codiumai-pr-agent-free[bot] commented 8 months ago

    PR Description updated to latest commit (https://github.com/kubescape/node-agent/commit/5192b5a423ec2265bf023058fecce19e92270f3e)

    codiumai-pr-agent-free[bot] commented 8 months ago

    PR Review

    ⏱️ Estimated effort to review [1-5] 2, because the changes are straightforward and localized to specific functionalities, but require a good understanding of the context and the impact of these changes on the system's behavior.
    🧪 Relevant tests Yes
    🔍 Possible issues Possible Bug: Changing the log level from Debug to Info in `cache.go` might unintentionally flood the logs with information that was previously deemed too verbose for normal operation. Consider the impact on log file sizes and readability.
    Logic Change: In `r1000_exec_from_malicious_source.go`, changing the check from an exact path to a directory path could potentially broaden the scope of what is considered a malicious source, possibly leading to false positives. Ensure this change aligns with the intended behavior of rule R1000.
    🔒 Security concerns No

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    codiumai-pr-agent-free[bot] commented 8 months ago

    PR Code Suggestions

    CategorySuggestions                                                                                                                                                       
    Enhancement
    Adjust the logging level to match the significance of the event. ___ **Consider using a more appropriate logging level for operational events that are expected
    under normal conditions. Using Info level for adding global rule bindings might be too
    verbose for production environments. If this event is significant and should always be
    logged, Info is appropriate; otherwise, consider using Debug.** [pkg/rulebindingmanager/cache/cache.go [185]](https://github.com/kubescape/node-agent/pull/233/files#diff-0674d450411ce55370a6341da8d3a34cadffe21ba15112d3f29955de58e51156R185-R185) ```diff -logger.L().Info("AddRuleBinding", helpers.String("ruleBinding", rbName), helpers.String("global", "true")) +logger.L().Debug("AddRuleBinding", helpers.String("ruleBinding", rbName), helpers.String("global", "true")) ```
    Uncomment the test function to ensure critical functionality is tested. ___ **Uncomment the TestProcessEvent function to ensure the ProcessEvent method is properly
    tested. It's important to have tests covering the logic for detecting executions from
    malicious sources, as this is a critical security feature.** [pkg/ruleengine/v1/r1000_exec_from_malicious_source_test.go [46-103]](https://github.com/kubescape/node-agent/pull/233/files#diff-0335c2abb82667ee7c0f955f8a4f1ab795958d30e89dc3965de2d67c6b610b00R46-R103) ```diff -// func TestProcessEvent(t *testing.T) { -// ... -// } +func TestProcessEvent(t *testing.T) { + ... +} ```
    Possible issue
    Ensure the execution path is absolute to match the logic's assumptions. ___ **Ensure that getExecPathFromEvent(execEvent) always returns an absolute path as assumed by
    the comment. If there's any chance it might not, consider adding a check or normalization
    step to ensure the path is absolute. This will prevent logic errors when checking prefixes
    against maliciousExecPathPrefixes.** [pkg/ruleengine/v1/r1000_exec_from_malicious_source.go [74]](https://github.com/kubescape/node-agent/pull/233/files#diff-00351ce4b75a85e267a68663f357265bbcc7721c2e461fa6112363fdfb2150c5R74-R74) ```diff -p := filepath.Dir(getExecPathFromEvent(execEvent)) +execPath := getExecPathFromEvent(execEvent) +if !filepath.IsAbs(execPath) { + execPath = filepath.Join("/absolute/path/base", execPath) +} +p := filepath.Dir(execPath) ```
    Add back logging for errors when listing resources fails. ___ **It seems the logging for failed attempts to list resources has been removed. Consider
    adding back logging for these errors with appropriate context. Logging such errors is
    crucial for diagnosing issues in dynamic environments.** [pkg/watcher/dynamicwatcher/watch.go [88]](https://github.com/kubescape/node-agent/pull/233/files#diff-f29578a7352bf2f04d5b87fd277128222fa7ce282adc7d71a9d628c9880a5722R88-R88) ```diff -// filed to list resources, will retry +logger.L().Ctx(ctx).Warning("get existing storage objects", helpers.Error(err), + helpers.String("resource", res.Resource), + helpers.String("retry in", d.String())) ```
    Maintainability
    Remove unnecessary import if not used. ___ **Importing "path/filepath" without using it in the new code changes could indicate an
    unnecessary import. If "path/filepath" is not used elsewhere in the file outside the diff
    provided, consider removing this import to keep the code clean and maintainable.** [pkg/ruleengine/v1/r1000_exec_from_malicious_source.go [8]](https://github.com/kubescape/node-agent/pull/233/files#diff-00351ce4b75a85e267a68663f357265bbcc7721c2e461fa6112363fdfb2150c5R8-R8) ```diff -"path/filepath" +"" ```

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    github-actions[bot] commented 8 months ago

    Summary: