Ruben Groenewoud
7cc841cc87
* [New Rule] PE via UID INT_MAX Bug * changed file name * Should be more decisive * fix * Update rules/linux/privilege_escalation_linux_uid_int_max_bug.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Update rules/linux/privilege_escalation_linux_uid_int_max_bug.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Update rules/linux/privilege_escalation_linux_uid_int_max_bug.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> --------- Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
48 lines
1.7 KiB
TOML
48 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2023/07/27"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/07/27"
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[rule]
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author = ["Elastic"]
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description = """
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This rule monitors for the execution of the systemd-run command by a user with a UID that is larger than the maximum
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allowed UID size (INT_MAX). Some older Linux versions were affected by a bug which allows user accounts with a UID
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greater than INT_MAX to escalate privileges by spawning a shell through systemd-run.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Potential Privilege Escalation via UID INT_MAX Bug Detected"
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references = [
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"https://twitter.com/paragonsec/status/1071152249529884674",
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"https://github.com/mirchr/security-research/blob/master/vulnerabilities/CVE-2018-19788.sh",
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"https://gitlab.freedesktop.org/polkit/polkit/-/issues/74"]
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risk_score = 47
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rule_id = "d55436a8-719c-445f-92c4-c113ff2f9ba5"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Privilege Escalation"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where host.os.type == "linux" and event.action == "exec" and event.type == "start" and
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process.name == "systemd-run" and process.args == "-t" and process.args_count >= 3 and user.id >= "1000000000"
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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 = "T1068"
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name = "Exploitation for Privilege Escalation"
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reference = "https://attack.mitre.org/techniques/T1068/"
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[rule.threat.tactic]
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id = "TA0004"
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name = "Privilege Escalation"
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reference = "https://attack.mitre.org/tactics/TA0004/"
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