Apache - Apache 2449 flaw CVE-2021-41773
Id | 767f9dc4-3b01-11ec-8d3d-0242ac130003 |
Rulename | Apache - Apache 2.4.49 flaw CVE-2021-41773 |
Description | Detects using Apache 2.4.49 flaw CVE-2021-41773 |
Severity | High |
Tactics | InitialAccess LateralMovement |
Techniques | T1190 T1133 T1210 |
Required data connectors | CustomLogsAma |
Kind | Scheduled |
Query frequency | 10m |
Query period | 10m |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheCVE-2021-41773.yaml |
Version | 1.0.3 |
Arm template | 767f9dc4-3b01-11ec-8d3d-0242ac130003.json |
ApacheHTTPServer
| where HttpRequestMethod =~ "GET"
| where UrlOriginal has_all ("/cgi-bin/", "/%2e%2e/")
| where HttpStatusCode == "200"
| extend UrlCustomEntity = UrlOriginal
id: 767f9dc4-3b01-11ec-8d3d-0242ac130003
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheCVE-2021-41773.yaml
requiredDataConnectors:
- datatypes:
- ApacheHTTPServer_CL
connectorId: CustomLogsAma
description: |
'Detects using Apache 2.4.49 flaw CVE-2021-41773'
severity: High
queryPeriod: 10m
kind: Scheduled
tactics:
- InitialAccess
- LateralMovement
queryFrequency: 10m
query: |
ApacheHTTPServer
| where HttpRequestMethod =~ "GET"
| where UrlOriginal has_all ("/cgi-bin/", "/%2e%2e/")
| where HttpStatusCode == "200"
| extend UrlCustomEntity = UrlOriginal
version: 1.0.3
triggerThreshold: 0
name: Apache - Apache 2.4.49 flaw CVE-2021-41773
entityMappings:
- entityType: URL
fieldMappings:
- columnName: UrlCustomEntity
identifier: Url
status: Available
relevantTechniques:
- T1190
- T1133
- T1210
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/767f9dc4-3b01-11ec-8d3d-0242ac130003')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/767f9dc4-3b01-11ec-8d3d-0242ac130003')]",
"properties": {
"alertRuleTemplateName": "767f9dc4-3b01-11ec-8d3d-0242ac130003",
"customDetails": null,
"description": "'Detects using Apache 2.4.49 flaw CVE-2021-41773'\n",
"displayName": "Apache - Apache 2.4.49 flaw CVE-2021-41773",
"enabled": true,
"entityMappings": [
{
"entityType": "URL",
"fieldMappings": [
{
"columnName": "UrlCustomEntity",
"identifier": "Url"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheCVE-2021-41773.yaml",
"query": "ApacheHTTPServer\n| where HttpRequestMethod =~ \"GET\"\n| where UrlOriginal has_all (\"/cgi-bin/\", \"/%2e%2e/\")\n| where HttpStatusCode == \"200\" \n| extend UrlCustomEntity = UrlOriginal\n",
"queryFrequency": "PT10M",
"queryPeriod": "PT10M",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess",
"LateralMovement"
],
"techniques": [
"T1133",
"T1190",
"T1210"
],
"templateVersion": "1.0.3",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}