Rule History

SID: 2035109 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2 • Feb 5, 2022, 12:00 PM

Message:

ET EXPLOIT Possible Citrix Application Delivery Controller Arbitrary Code Execution Attempt (CVE-2019-19781) M4

Rule:

alert http any any -> $HTTP_SERVERS any (msg:"ET EXPLOIT Possible Citrix Application Delivery Controller Arbitrary Code Execution Attempt (CVE-2019-19781) M4"; flow:established,to_server; http.uri; content:"/vpns/"; nocase; fast_pattern; http.uri.raw; pcre:"/(?:(?:%2F|\/)(?:\.|%2E){2}(?:%2F|\/))/i"; reference:url,support.citrix.com/article/CTX267679; reference:cve,2019-19781; classtype:attempted-admin; sid:2035109; rev:2; metadata:attack_target Server, created_at 2022_02_05, cve CVE_2019_19781, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2022_02_05, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)

Created:

Feb 5, 2022, 12:00 PM

Updated:

Feb 5, 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