""ET EXPLOIT Possible EyesOfNetwork Remote File Upload with PHP WebShell Inbound (CVE-2021-27513)""

SID: 2034160

Revision: 1

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_10_09, cve CVE_2021_27513, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2021_10_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

  • cve

  • 2021-27513

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: "/module/admin_itsm/ajax.php"

  • Value: "|0d 0a 0d 0a|<?php"

  • Value: "name=|22|itsm_type_request|22|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

source