""ET EXPLOIT Cisco IOS XE Web UI Command Injection Vulnerability (CVE-2023-20273)""

SID: 2049007

Revision: 1

Class Type: attempted-admin

Metadata: affected_product Cisco_IOS, attack_target Networking_Equipment, created_at 2023_11_01, cve CVE_2023_20273, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Critical, updated_at 2023_11_01, reviewed_at 2023_11_01, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services

Reference:

  • cve

  • 2023-20273

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/webui/rest/softwareMgmt/installAdd" Depth: 35

  • Value: "Auth=" Depth: 5

  • Value: "|22|ipaddress|22|"

  • Value: "|22|"

  • Value: "|3a|"

  • Value: "|3a|"

  • Value: "|3a|"

  • Value: "X-Csrf-Token|3a 20|"

Within: 5

PCRE: "/^X-Csrf-Token\x3a\x20[^\r\n]+[\r\n]+$/Hmi"

Special Options:

  • http_method

  • http_uri

  • nocase

  • fast_pattern

  • http_cookie

  • http_client_body

  • nocase

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

source