""ET EXPLOIT Cisco HyperFlex OS Command Injection M1 (CVE-2021-1497)""

SID: 2034043

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_09_29, cve CVE_2021_1497, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2021_09_29, mitre_tactic_id TA0008, mitre_tactic_name Lateral_Movement, mitre_technique_id T1210, mitre_technique_name Exploitation_Of_Remote_Services

Reference:

  • cve

  • 2021-1497

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/auth" Depth: 5

  • Value: "username="

  • Value: "password="

  • Value: "%3b"

Within:

PCRE: "/^%3b(?:%[a-f0-9]{2}){5,}/U"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • http_client_body

  • nocase

  • fast_pattern

  • http_client_body

source