Isai
66 lines
2.3 KiB
TOML
66 lines
2.3 KiB
TOML
[metadata]
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creation_date = "2022/09/13"
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integration = "kubernetes"
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maturity = "production"
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min_stack_comments = "New fields added to Kubernetes Integration"
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min_stack_version = "8.4.0"
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updated_date = "2022/10/03"
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[rule]
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author = ["Elastic"]
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description = """
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This rule detects when an unauthenticated user request is authorized within the cluster. Attackers may attempt to use
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anonymous accounts to gain initial access to the cluster or to avoid attribution of their activities within the cluster.
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This rule excludes the /healthz, /livez and /readyz endpoints which are commonly accessed anonymously.
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"""
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false_positives = [
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"""
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Anonymous access to the API server is a dangerous setting enabled by default. Common anonymous connections (e.g.,
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health checks) have been excluded from this rule. All other instances of authorized anonymous requests should be
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investigated.
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""",
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]
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index = ["logs-kubernetes.*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Kubernetes Anonymous Request Authorized"
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note = """## Setup
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The Kubernetes Fleet integration with Audit Logs enabled or similarly structured data is required to be compatible with this rule."""
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references = [
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"https://media.defense.gov/2022/Aug/29/2003066362/-1/-1/0/CTR_KUBERNETES_HARDENING_GUIDANCE_1.2_20220829.PDF",
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]
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risk_score = 47
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rule_id = "63c057cc-339a-11ed-a261-0242ac120002"
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severity = "medium"
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tags = ["Elastic", "Kubernetes", "Continuous Monitoring", "Execution", "Initial Access", "Defense Evasion"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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event.dataset : "kubernetes.audit_logs"
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and kubernetes.audit.annotations.authorization_k8s_io/decision:"allow"
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and (kubernetes.audit.user.username:("system:anonymous" or "system:unauthenticated") or not kubernetes.audit.user.username:*)
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and not kubernetes.audit.objectRef.resource:("healthz" or "livez" or "readyz")
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1078"
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name = "Valid Accounts"
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reference = "https://attack.mitre.org/techniques/T1078/"
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[[rule.threat.technique.subtechnique]]
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id = "T1078.001"
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name = "Default Accounts"
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reference = "https://attack.mitre.org/techniques/T1078/001/"
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[rule.threat.tactic]
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id = "TA0001"
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name = "Initial Access"
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reference = "https://attack.mitre.org/tactics/TA0001/"
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