""ET EXPLOIT Citrix App Delivery Controller and Citrix Gateway M1 (CVE-2019-19781)""

SID: 2034279

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_10_28, cve CVE_2019_19781, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2022_02_04, reviewed_at 2023_08_22, 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: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/newbm.pl"

  • Value: "NSC_USER|3a 20|"

  • Value: "NSC_NONCE|3a 20|"

  • Value: "url="

  • Value: "template.new"

Within:

PCRE: "/\/newbm.pl$/Ui"

Special Options:

  • http_method

  • http_uri

  • nocase

  • fast_pattern

  • http_header

  • nocase

  • http_header

  • nocase

  • nocase

  • http_client_body

  • http_client_body

  • nocase

source