""ET EXPLOIT WS_FTP .NET Deserialization Exploit Attempt (CVE-2023-40044)""

SID: 2048383

Revision: 1

Class Type: attempted-admin

Metadata: affected_product WS_FTP, attack_target FTP_Server, created_at 2023_10_03, cve CVE_2023_40044, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_10_03, reviewed_at 2023_10_03

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/AHT/AhtApiService.asmx/AuthUser"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d|"

  • Value: !"|3b 20|filename|3d|"

  • Value: "Content-Type"

  • Value: "|3a 20|multipart/form-data|3b|"

Within: 22

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

  • nocase

  • http_header

source