""ET EXPLOIT SonicWall SMA Authenticated Command Injection Attempt CVE-2021-20039""

SID: 2034986

Revision: 1

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2022_01_26, cve CVE_2021_20039, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2022_01_26, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

  • cve

  • 2021-20039

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "delete"

  • Value: "CERT"

  • Value: "n"

  • Value: "perl"

  • Value: "base64"

  • Value: "POST /cgi-bin/viewcert HTTP/1.1"

Within: 30

PCRE:

Special Options:

  • nocase

  • http_client_body

  • nocase

  • http_client_body

  • nocase

  • http_client_body

  • nocase

  • http_client_body

  • nocase

  • http_client_body

  • fast_pattern

source