""ET EXPLOIT ARG-W4 ASDL Router DNS Changer Exploit Attempt M2""

SID: 2031808

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Networking_Equipment, created_at 2021_03_04, deployment Perimeter, performance_impact Moderate, signature_severity Major, tag DNS_Hijack, 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: "/form2wan.cgi?wantype=1"

  • Value: "&wan_dns2="

  • Value: "&wan_dns3="

  • Value: "&submit.htm"

  • Value: "wan.htm=send&save="

Within:

PCRE:

Special Options:

  • http_uri

  • nocase

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • fast_pattern

  • nocase

source