ET EXPLOIT Possible Microsoft Exchange Server OWA GetWacUrl Information Disclosure Attempt (CVE-2020-17143)

7.0.3 5.0SID: 2035138Rev: 3Enabled5 views

Fileemerging-exploit.rules

CreatedFebruary 8, 2022

UpdatedApril 25, 2024

Classificationweb-application-attack

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT Possible Microsoft Exchange Server OWA GetWacUrl Information Disclosure Attempt (CVE-2020-17143)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/owa/service.svc"; fast_pattern; http.request_header; header_lowercase; content:"action|3a 20|GetWacIframeUrlForOneDrive"; startswith; nocase; http.request_header; content:"|22|EndPointUrl|22 3a 22|"; nocase; reference:cve,2020-17143; classtype:web-application-attack; sid:2035138; rev:3; metadata:attack_target Server, created_at 2022_02_08, cve CVE_2020_17143, deployment Perimeter, deployment Internal, confidence Medium, signature_severity Major, tag Exploit, updated_at 2024_04_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

References

cve	2020-17143

Metadata

attack targetServer

created at2022_02_08

cve

CVE-2020-17143

deploymentInternal

confidenceMedium

signature severityMajor

tagExploit

updated at2024_04_25

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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