""ET WEB_SPECIFIC_APPS Possible CrushFTP as2-to Anonymous User Rename Attempt (CVE-2023-43177)""

SID: 2049265

Revision: 1

Class Type: attempted-user

Metadata: attack_target FTP_Server, created_at 2023_11_20, cve CVE_2023_43177, deployment Perimeter, deployment Internet, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2023_11_20

Reference:

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: $HOME_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/WebInterface/"

  • Value: "as2-to|3a 20|"

  • Value: "Cookie|3a 20|CrushAuth|3d|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_header

  • nocase

  • fast_pattern

source