[9.0] [Security Solution] - Feat Add Severity and risk_score to the Siem migrations (#211202)
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…m migrations (elastic#211202) ## Summary Handles below Features: - elastic/security-team#11837 This PR adds `risk_score` and `severity` based on below 3 rules - `Rule Severity` should be mapped to Splunk's `alert.severity`. - `Rule Severity` values should be mapped as mentioned in below section Mapping Elastic Security Rule's Severity with Splunk's Severity > > |Splunk's Severity| Elastic Rule Severity | > |---|---| > |1- Info|Low| > |2-Low|Low| > |3-Medium|Medium| > |4-High|High| > |5-Critical|Critical| - Elastic Security Rule's `Risk Score` derived from the `Severity` of the Rulet based on below mapping( [Source](https://www.elastic.co/guide/en/security/current/rules-ui-create.html#rule-ui-basic-params) )  ## Desk Testing [splunk_rules_test_severity.json](https://github.com/user-attachments/files/18825855/splunk_rules_test_severity.json) 1. Use the above attached test file which has the `alert.severity` exported from Splunk. 2. Check the Severity of the translated rule should match the mapping given above. Expect results like below : <img width="1474" alt="Screenshot 2025-02-17 at 14 19 23" src="https://github.com/user-attachments/assets/a8459c71-3208-480e-8049-05293a0a3d2a" /> ### Checklist Check the PR satisfies following conditions. Reviewers should verify this PR satisfies this list as well. - [x] Any text added follows [EUI's writing guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses sentence case text and includes [i18n support](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md) - [x] [Unit or functional tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html) were updated or added to match the most common scenarios ### Identify risks Does this PR introduce any risks? For example, consider risks like hard to test bugs, performance regression, potential of data loss. Describe the risk, its severity, and mitigation for each identified risk. Invite stakeholders and evaluate how to proceed before merging. - [ ] [See some risk examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) - [ ] ... --------- Co-authored-by: kibanamachine <[email protected]> (cherry picked from commit 74ef9fc)
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Backport
This will backport the following commits from
mainto9.0:Severityandrisk_scoreto the Siem migrations (#211202)Questions ?
Please refer to the Backport tool documentation