Eric Forte
57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
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# or more contributor license agreements. Licensed under the Elastic License
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# 2.0; you may not use this file except in compliance with the Elastic License
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# 2.0.
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import sys
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from . import RtaMetadata, common
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metadata = RtaMetadata(
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uuid="a78663dc-9561-40a9-b4eb-f15e31c690cc",
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platforms=["linux"],
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endpoint=[
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{
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"rule_name": "Potential Privilege Escalation via OverlayFS",
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"rule_id": "ca9de348-a09d-4c67-af21-5645b70003d0",
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},
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],
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siem=[
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{
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"rule_name": "Potential Privilege Escalation via OverlayFS",
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"rule_id": "b51dbc92-84e2-4af1-ba47-65183fcd0c57",
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},
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],
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techniques=["T1068"],
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)
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@common.requires_os(*metadata.platforms)
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def main() -> None:
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common.log("Creating a fake unshare executable..")
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masquerade = "/tmp/unshare"
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source = common.get_path("bin", "linux.ditto_and_spawn")
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common.copy_file(source, masquerade)
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# Execute command
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commands = [masquerade, "-rm", "cap_setuid"]
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common.log("Launching fake commands to set cap_setuid via unshare")
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common.execute([*commands], timeout=2, kill=True)
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common.log("Unshare simulation succesful")
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common.log("Faking uid change via same parent")
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sudo_commands = ["sudo", "su"]
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common.execute([*sudo_commands], timeout=2, kill=True)
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common.log("Uid change simulation succesful")
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# cleanup
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common.remove_file(masquerade)
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if __name__ == "__main__":
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sys.exit(main())
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