""ET INFO Cisco IOS XE Web Server Auth From Suspicious Username (cisco_tac_admin) (CVE-2023-20198) (Outbound)""

SID: 2048939

Revision: 1

Class Type: misc-activity

Metadata: attack_target Client_Endpoint, created_at 2023_10_30, cve CVE_2023_20198, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Informational, updated_at 2023_10_30, reviewed_at 2023_10_30

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: "Cookie|3a 20|Auth=cisco_tac_admin"

  • Value: "GET"

  • Value: "Auth=cisco_tac_admin" Depth: 20

Within:

PCRE:

Special Options:

  • http_method

  • http_cookie

source