""ET WEB_SPECIFIC_APPS Inductive Automation remoteSystemID Check (CVE-2023-39476)""

SID: 2047920

Revision: 1

Class Type: attempted-admin

Metadata: created_at 2023_09_05, cve CVE_2023_39476, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_09_05, reviewed_at 2023_09_05

Reference:

  • cve

  • 2023-39476

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HOME_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/system/ws-control-servelet?name=" Depth: 33

  • Value: "uuid="

  • Value: "url=http|3a 2f 2f|localhost/system"

  • Value: "Connection|3a 20|"

  • Value: "Sec-WebSocket-Version|3a 20|"

  • Value: "Sec-WebSocket-Key|3a 20|"

  • Value: "Upgrade|3a 20|"

  • Value: "User-Agent|3a 20|"

  • Value: "Host|3a 20|"

Within:

PCRE: "/url=http|3a\x202f\x202f|localhost\/system$/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_uri

  • http_uri

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

source