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Migrates alerts to an object-oriented implementation

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Migrates alert_malicious_signature alert_elephant_local_to_remote alert_elephant_remote_to_local

Migrates long_lived

Migrates alert_flow_blocked

Migrates alert_tls_old_version

Migrates alert_tls_certificate_mismatch

Migrates alert_tls_certificate_expired

Migrates alert_tls_unsafe_ciphers

Migrates alert_tls_certificate_selfsigned

Migrates alert_potentially_dangerous_protocol

Migrates alert_snmp_device_reset

Migrates alert_port_mac_changed

Migrates alert_port_duplexstatus_change

Mirgates alert_port_errors

Migrates alert_port_status_change

Migrates alert_port_load_threshold_exceeded

Migrates alert_data_exfiltration

Migrates alert_dns_data_exfiltration

Migrates alert_suspicious_tcp_probing alert_suspicious_tcp_syn_probing alert_tcp_connection_refused

Migrates alert_dns_invalid_query

Migrates alert_attack_mitigation_via_snmp

Migrates alert_lateral_movement

Migrates alert_periodicity_update

Migrates alert_dns_positive_error_ratio

Migrates alert_iec104_error
This commit is contained in:
Simone Mainardi 2020-12-22 09:54:55 +01:00
parent 35a66a0c8a
commit 3baa932a01
50 changed files with 1495 additions and 812 deletions
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67
scripts/lua/modules/alert_definitions/alert_potentially_dangerous_protocol.lua
View file

@ -2,41 +2,52 @@
-- (C) 2019-20 - ntop.org
--
local alert_keys = require "alert_keys"
-- ##############################################
-- #######################################################
local alert_keys = require "alert_keys"
local status_keys = require "flow_keys"
-- Import the classes library.
local classes = require "classes"
-- Make sure to import the Superclass!
local alert = require "alert"
-- ##############################################
local alert_potentially_dangerous_protocol = classes.class(alert)
-- ##############################################
alert_potentially_dangerous_protocol.meta = {
status_key = status_keys.ntopng.status_potentially_dangerous,
alert_key = alert_keys.ntopng.alert_potentially_dangerous_protocol,
i18n_title = "flow_details.potentially_dangerous_protocol",
icon = "fas fa-exclamation",
}
-- ##############################################
-- @brief Prepare an alert table used to generate the alert
-- @param tls_version A string indicating the TLS version detected, or nil when version is not available
-- @param tls_info A lua table with TLS info gererated calling `flow.getTLSInfo()`
-- @return A table with the alert built
local function createPotentiallyDangerous(tls_version, tls_info)
tls_info = tls_info or {}
local server_cn = tls_info["protos.tls.server_names"] or ""
local client_cn = tls_info["protos.tls.client_requested_server_name"] or ""
function alert_potentially_dangerous_protocol:init()
-- Call the parent constructor
self.super:init()
local built = {
alert_type_params = {
tls_version = tls_version,
["tls_crt.cli"] = client_cn,
["tls_crt.srv"] = server_cn,
["tls_crt.notBefore"] = tls_info["protos.tls.notBefore"],
["tls_crt.notAfter"] = tls_info["protos.tls.notAfter"],
["tls_crt.issuerDN"] = tls_info["protos.tls.issuerDN"] or "",
["tls_crt.now"] = os.time(),
["cli_ja3_signature"] = tls_info["protos.tls.ja3.client_hash"],
}
self.alert_type_params = {
-- No params
}
return built
end
-- #######################################################
return {
alert_key = alert_keys.ntopng.alert_potentially_dangerous_protocol,
i18n_title = "alerts_dashboard.potentially_dangerous_protocol",
i18n_description = "alert_messages.potentially_dangerous_protocol_description",
icon = "fas fa-exclamation",
creator = createPotentiallyDangerous,
}
-- @brief Format an alert into a human-readable string
-- @param ifid The integer interface id of the generated alert
-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
-- @return A human-readable string
function alert_potentially_dangerous_protocol.format(ifid, alert, alert_type_params)
return i18n("flow_details.potentially_dangerous_protocol")
end
-- #######################################################
return alert_potentially_dangerous_protocol