Rule History

SID: 2035138 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Feb 8, 2022, 12:00 PM

Message:

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

Rule:

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.header; content:"Action|3a 20|GetWacIframeUrlForOneDrive"; nocase; content:"|22|EndPointUrl|22 3a 22|"; nocase; reference:cve,2020-17143; classtype:web-application-attack; sid:2035138; rev:2; 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 2022_02_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

Created:

Feb 8, 2022, 12:00 PM

Updated:

Feb 8, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 21, 2024, 3:00 AM

Filename:

rules/emerging-exploit.rules