""ET EXPLOIT TerraMaster TOS RCE via OS Command Injection Inbound (CVE-2020-28188)""

SID: 2034200

Revision: 4

Class Type: attempted-admin

Metadata: affected_product Web_Server_Applications, attack_target Server, created_at 2021_10_15, cve CVE_2020_28188, deployment Perimeter, former_category EXPLOIT, signature_severity Major, updated_at 2023_01_13

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "|2e|php|3f|Event|3d|"

  • Value: "wget"

  • Value: !"oast.fun"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^(?:\x3b|\x0a|\x26|\x60|\x7C|\x24)/R"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_uri

  • http_uri

  • http_header

source