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

SID: 2029206

Revision: 4

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2019_12_30, cve CVE_2019_19781, deployment Perimeter, deployment Internal, deployment SSLDecrypt, signature_severity Major, tag Exploit, 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

Reference:

  • cve

  • 2019-19781

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: $HTTP_SERVERS

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "/vpns/"

  • Value: "/../"

Within:

PCRE:

Special Options:

  • http_uri

  • nocase

  • fast_pattern

  • http_raw_uri

source