elastic/kibana

[Security Solution][Alerts] Warn users when rule interval is larger than time range searched

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#154,963 创建于 2023年4月13日

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Feature:DE O11yFeature:Detection AlertsTeam:Detection Engineconsider-nexteffort:lowenhancementgood first issuesdh-linkedv8.8.0value:high

描述

Currently it's possible to specify arbitrary values for to, from, and interval in the detection rules APIs. This can lead to scenarios where the difference between to and from is smaller than the rule interval and some time periods will not be searched by the rule. For example, if we have

to: 'now-5m',
from: 'now-7m',
interval: '5m',

then the rule searches a 2 minute time period every 5 minutes. This leaves 3 out of every 5 minutes un-searched. We should add additional validation in rule APIs and/or runtime checks at rule execution time to prevent/warn users about misconfigurations like this.

Related Issues

贡献者指南

技术栈
typescriptnodejs
领域
backendapisecurity
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
Understanding of detection rules APIBasic knowledge of Kibana security solution
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
Investigate the existing rule API validation in the Kibana security solution. Examine the related issue #154967 for context. The implementation could involve adding validation in the rule creation/update API to check that the time range (difference between 'to' and 'from') is not smaller than the interval, and possibly adding runtime warnings. Consider where to add the warning: in the API response, in the rule execution log, or in the UI. Review the server side code in the alerting plugin and the security solution plugin.