""ET EXPLOIT Cisco IOS XE Web Server Possible Authentication Bypass Attempt (CVE-2023-20198) (Outbound)""

SID: 2048940

Revision: 3

Class Type: attempted-admin

Metadata: attack_target Networking_Equipment, created_at 2023_10_30, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, updated_at 2023_10_31, reviewed_at 2024_01_26

Reference:

  • cve

  • 2023-20198

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "|25|25"

  • Value: "|3c|SOAP|3a|Body|3e|"

  • Value: "|3c|request correlator|3d 22|"

Within:

PCRE:

Special Options:

  • http_method

  • http_raw_uri

  • http_client_body

  • nocase

  • http_client_body

  • nocase

  • fast_pattern

source