SigmaHQ/rules/web/web_expl_exchange_cve_2021_28480.yml
2021-08-18 18:58:20 +00:00

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YAML

title: Exchange Exploitation CVE-2021-28480
id: a2a9d722-0acb-4096-bccc-daaf91a5037b
status: experimental
description: Detects successful exploitation of Exchange vulnerability as reported in CVE-2021-28480
references:
- https://twitter.com/GossiTheDog/status/1392965209132871683?s=20
author: Florian Roth
date: 2021/05/14
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
c-uri|contains: '/owa/calendar/a'
cs-method: 'POST'
filter:
sc-status: 503
condition: selection and not filter
falsepositives:
- Unknown
level: critical