""ET EXPLOIT UPnP UUID Password Change Exploit Attempt Inbound - XR300 PoC Gadgets (CVE-2021-34991)""

SID: 2034493

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_11_18, cve CVE_2021_34991, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2021_11_18, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

• cve

• 2021-34991

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

• Value: "SUBSCRIBE"

• Value: "UUID|3a 20|"

• Value: "|b7 05 00|"

• Value: "|e0 e7 02|"

Within: 10

PCRE:

Special Options:

• http_method

• http_header

• fast_pattern

• http_client_body

• http_client_body

source