""ET EXPLOIT pfBlockerNG HTTP Host Header Remote Code Execution Attempt (CVE-2022-31814)""

SID: 2044629

Revision: 1

Class Type: attempted-admin

Metadata: affected_product IoT, attack_target Networking_Equipment, created_at 2023_03_15, cve CVE_2022_31814, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_03_15, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

  • cve

  • 2022-31814

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HTTP_SERVERS,$HOME_NET]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/pfblockerng/www/index.php"

  • Value: "Host|3a 20 2a 3b|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source