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CYFIRMA - Attack Surface - Domain/IP Vulnerability Exposure Medium Rule

Description

"This rule is triggered when CYFIRMA identifies publicly exposed vulnerabilities on domains or IP addresses within your organization's attack surface. These vulnerabilities may include outdated software, missing patches, insecure services, or misconfigurations that can be exploited by threat actors.Such exposure significantly increases the risk of exploitation, lateral movement, or data breach. Immediate investigation and remediation are recommended."

Rule type: Scheduled
Version: 1.0.1
Declared status: Available
Query frequency: 5m
Query period: 5m
Trigger: gt 0

Declared MITRE coverage

Declared sources

Metadata from the source file. No dependencies inferred from KQL.

Connectors

CyfirmaAttackSurfaceAlertsConnector

Data types

CyfirmaASDomainIPVulnerabilityAlerts_CL

KQL query

Original query, unchanged.

// Medium Severity Domain/IP Vulnerability Exposure Detected
let timeFrame = 5m;
CyfirmaASDomainIPVulnerabilityAlerts_CL
| where severity == 'High' and TimeGenerated between (ago(timeFrame) .. now())
| mv-expand pvuln = possible_vulnerabilities
| extend cve = tostring(pvuln.cveNo), vulProducts = pvuln.products
| mv-expand vul_Products = vulProducts
| summarize cveList = make_set(cve, 100), vul_products1 = make_set(vul_Products, 100)    by uid
| join kind=inner (CyfirmaASDomainIPVulnerabilityAlerts_CL
    | where severity == 'High'
    | summarize arg_max(TimeGenerated, *) by uid)
    on uid
| extend
    Vulnerabilities = strcat_array(cveList, ', '),
    VulnerabilityProducts = strcat_array(vul_products1, ', '),
    Description=description,
    FirstSeen=first_seen,
    LastSeen=last_seen,
    RiskScore=risk_score,
    Domain=sub_domain,
    TopDomain=top_domain,
    NetworkIP=ip,
    AlertUID=alert_uid,
    UID=uid,
    OpenPorts=open_ports,
    HostProvider=host_provider,
    Country=country,
    Softwares=softwares,
    WebServer=web_server,
    WebServerVersion=web_server_version,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Description,
    Domain,
    TopDomain,
    RiskScore,
    FirstSeen,
    LastSeen,
    NetworkIP,
    AlertUID,
    UID,
    Vulnerabilities,
    VulnerabilityProducts,
    OpenPorts,
    HostProvider,
    Country,
    Softwares,
    WebServer,
    WebServerVersion,
    ProviderName,
    ProductName

Declared entities

DNSHostIP

Source provenance

GitHub

Displayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.

File: Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPVulnerabilitiesMediumRule.yaml ↗
Commit: 9800e51 ↗
Source identifier: a2f2c91b-5796-45e4-82c7-61763e6c2c9c

Additional source files 2

Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPVulnerabilitiesMediumRule.yamlsource ↗Solutions/Cyfirma Attack Surface/Data/Solution_CyfirmaASAlerts.jsonsolution-membership ↗

GSTEP / CATALOG TRACKING

Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC

GSTEP sync dates, separate from the source content’s publication dates.