""ET EXPLOIT Possible Microsoft Exchange RCE Inbound M2 (CVE-2021-34473)""
SID: 2033711
Revision: 2
Class Type: attempted-admin
Metadata: affected_product Microsoft_Exchange, attack_target Server, created_at 2021_08_12, cve CVE_2021_34473, deployment Perimeter, deployment Internal, deployment SSLDecrypt, signature_severity Major, tag Exploit, updated_at 2022_12_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application
Reference:
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cve
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2021-34473
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: [$HOME_NET,$HTTP_SERVERS]
Destination Port: [443,444,$HTTP_PORTS]
Flow: established,to_server
Contents:
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Value: "POST"
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Value: "/autodiscover.json?"
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Value: "/PowerShell/"
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Value: "X-Rps-CAT="
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Value: "Email="
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Value: "autodiscover/"
Within: 20
PCRE:
Special Options:
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http_method
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http_uri
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nocase
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http_uri
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fast_pattern
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http_uri
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http_uri
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http_uri