""ET WEB_SERVER Possible Perl Shell in HTTP POST""

SID: 2016641

Revision: 5

Class Type: web-application-attack

Metadata: created_at 2013_03_22, updated_at 2013_03_22

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HTTP_SERVERS

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "#!/usr/bin/perl"

Within:

PCRE:

Special Options:

  • nocase

  • http_method

  • nocase

  • http_client_body

source