""ET EXPLOIT ManageEngine AdSelfService Plus - Arbritrary File Upload Attempt (CVE-2021-40539)""

SID: 2034363

Revision: 1

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_11_09, cve CVE_2021_40539, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2021_11_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

  • cve

  • 2021-40539

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: "/RestAPI/"

  • Value: "form-data|3b 20|name=|22|methodToCall|22|"

  • Value: "unspecified"

  • Value: "|20|name=|22|Save|22|"

Within: 30

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_client_body

source