""ET EXPLOIT ARG-W4 ASDL Router DNS Changer Exploit Attempt""

SID: 2027907

Revision: 3

Class Type: attempted-admin

Metadata: attack_target Networking_Equipment, created_at 2019_08_23, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2021_03_04

Reference:

Protocol: tcp

Source Network: any

Source Port: any

Destination Network: $HOME_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "/form2dns.cgi?dnsmode=1&dns1="

  • Value: "&dns2="

  • Value: "&dns3="

  • Value: "&submit.htm?dns.htm=send&save="

Within:

PCRE:

Special Options:

  • http_uri

  • nocase

  • http_uri

  • http_uri

  • http_uri

  • fast_pattern

  • nocase

source