SNMPv2c/v1 used-paloaltonetworks-panos

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SNMPv2c/v1 used-paloaltonetworks-panos
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#1

SNMPv2c/v1 used-paloaltonetworks-panos

Vendor: paloaltonetworks

OS: panos

Description:
As SNMPv2 is not very secure, Indeni will alert if it is used.

Remediation Steps:
Configure SNMPv3 instead.

How does this work?
This script pulls the Palo Alto Networks firewall’s active configuration and extracts the configured services from there.

Why is this important?
SNMPv2c is an unsecure protocol and should not be used. Users should prefer the more secure SNMPv3.

Without Indeni how would you find this?
An administrator may write a script to pull this data from devices and compare against a gold configuration.

panos-show_config_running-monitoring-xml

#! META
name: panos-show_config_running-monitoring-xml
description: Fetch the running config (xml)
type: monitoring
monitoring_interval: 60 minute
requires:
    vendor: paloaltonetworks
    os.name: panos

#! COMMENTS
certificate-expiration:
    why: |
        Palo Alto Networks firewalls use certificate for a variety of different purposes. One purpose, for example, is inbound SSL inspection. If the certificate used by the firewall expires, certain services may be unavailable to external users.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration, reviews the certificates saved and retrieves their subject and expiration date.
    without-indeni: |
        An administrator may manually review the certificates and their expiration dates, by looking at the web interface.
    can-with-snmp: true
    can-with-syslog: true
timezone:
    why: |
        Most configurations in Palo Alto Networks firewalls are synchronized across cluster members. Some are not, the timezone is one of them. It is important to verify that the timezone is the same on all cluster members to avoid confusion or issues.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the timezone from there.
    without-indeni: |
        An administrator may write a script to pull this data from cluster members and compare it.
    can-with-snmp: false
    can-with-syslog: false
domain:
    why: |
        Most configurations in Palo Alto Networks firewalls are synchronized across cluster members. Some are not, the domain name is one of them. It is important to verify that the domain name is the same on all cluster members to avoid confusion or issues.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the timezone from there.
    without-indeni: |
        An administrator may write a script to pull this data from cluster members and compare it.
    can-with-snmp: false
    can-with-syslog: false
login-banner:
    why: |
        Most configurations in Palo Alto Networks firewalls are synchronized across cluster members. Some are not, the login banner is one of them. It is important to verify that the login banner is the same on all cluster members to avoid confusion or issues.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the timezone from there.
    without-indeni: |
        An administrator may write a script to pull this data from cluster members and compare it.
    can-with-snmp: false
    can-with-syslog: false
syslog-servers:
    why: |
        Tracking the currently configured Syslog servers on all devices is important to ensure consistent logging.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured Syslog servers from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
radius-servers:
    why: |
        Tracking the currently configured RADIUS servers on all devices is important to ensure consistent authentication and access.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured RADIUS servers from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
dns-servers:
    why: |
        Tracking the currently configured DNS servers on all devices is important to ensure consistent name resolution.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured DNS servers from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
ntp-servers:
    why: |
        Tracking the currently configured NTP servers on all devices is important to ensure consistent time sync.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured NTP servers from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
unencrypted-snmp-configured:
    why: |
        SNMPv2c is an unsecure protocol and should not be used. Users should prefer the more secure SNMPv3.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured services from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
telnet-enabled:
    why: |
        Telnet is an unsecure protocol and should not be used. Users may enable telnet unintentionally and should be alerted if they do so.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured services from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
http-server-enabled:
    why: |
        HTTP is an unsecure protocol and should not be used. Users may enable HTTP unintentionally and should be alerted if they do so.
    how: |
        This script pulls the Palo Alto Networks firewall's active configuration and extracts the configured services from there.
    without-indeni: |
        An administrator may write a script to pull this data from devices and compare against a gold configuration.
    can-with-snmp: false
    can-with-syslog: false
license-elements-used:
    skip-documentation: true
app-update-acceptable-lag:
    skip-documentation: true

#! REMOTE::HTTP
url: /api?type=op&cmd=<show><config><running></running></config></show>&key=${api-key}
protocol: HTTPS

#! PARSER::XML
_vars:
    root: /response/result/config
_metrics:
    -
        _groups:
            ${root}/shared/certificate/entry:
                _value.double:
                    _text: "expiry-epoch"
                _tags:
                    name:
                        _text: "subject"
                    "im.name":
                        _constant: "certificate-expiration"
                    "live-config":
                        _constant: "true"
                    "display-name":
                        _constant: "Certificate Expiration"
                    "im.dstype.displayType":
                        _constant: "date"
                    "im.identity-tags":
                        _constant: "name"
    -
        _value.complex:
            value:
                _text: "${root}/devices/entry/deviceconfig/system/timezone"
        _tags:
            "im.name":
                _constant: "timezone"
            "live-config":
                _constant: "true"
            "display-name":
                _constant: "Timezone"
    -
        _value.complex:
            value:
                _text: "${root}/devices/entry/deviceconfig/system/domain"
        _tags:
            "im.name":
                _constant: "domain"
            "live-config":
                _constant: "true"
            "display-name":
                _constant: "Domain"
    -
        _value.complex:
            value:
                _text: "${root}/devices/entry/deviceconfig/system/login-banner"
        _tags:
            "im.name":
                _constant: "login-banner"
            "live-config":
                _constant: "true"
            "display-name":
                _constant: "Login Banner"
    -
        _tags:
            "im.name":
                _constant: "app-update-acceptable-lag"
            "live-config":
                _constant: "true"
            "display-name":
                _constant: "Application Packages - Acceptable Lag"
            "im.dstype.displayType":
                _constant: "duration"
        _temp:
            isweekly:
                _count: "${root}/devices/entry/deviceconfig/system/update-schedule/threats/recurring/weekly"
            ishourly:
                _count: "${root}/devices/entry/deviceconfig/system/update-schedule/threats/recurring/hourly"
            isdaily:
                _count: "${root}/devices/entry/deviceconfig/system/update-schedule/threats/recurring/daily"
            threshold:
                # This is a hack. The threshold may, or may not exist.
                # If we were to refer to it directly and it didn't exist, the entire metric
                # would have been aborted. So instead, we "name" the text of it, as well as
                # another, related node. If the threshold exists, we'll be getting its value.
                # If it doesn't, we'll get "recurring" (the name of the node in the second path)
                _name: "${root}/devices/entry/deviceconfig/system/update-schedule/threats/recurring/threshold/text() | ${root}/devices/entry/deviceconfig/system/update-schedule/threats/recurring[not(threshold)]"
        _transform:
            _value.double: |
                    {
                        # The acceptable lag depends on the kind of schedule used
                        acceptablelag=0
                        if (temp("isweekly") == "1") {
                            acceptablelag=8*24*3600
                        } else if (temp("ishourly") == "1") {
                            acceptablelag=2*3600
                        } else if (temp("isdaily") == "1") {
                            acceptablelag=47*3600
                        }

                        # Add threshold
                        if (temp("threshold") != "recurring") {
                            acceptablelag = acceptablelag + (temp("threshold") * 3600)
                        }

                        print acceptablelag
                    }
    -
        _tags:
            "im.name":
                _constant: "panw-app-update-action"
            "live-config":
                _constant: "true"
            "display-name":
                _constant: "Application Packages - Update Action"
            "im.dstype.displayType":
                _constant: "string"
        _value.complex:
            value:
                _text: "${root}/devices/entry/deviceconfig/system/update-schedule/threats/recurring/*/action"
    -
        _groups:
            "${root}//syslog/entry/server/entry":
                _value.complex:
                    "host":
                        _text: "server"
                    "severity":
                        _text: "facility"
                _tags:
                    "im.name":
                        _constant: "syslog-servers"
                    "live-config":
                        _constant: "true"
                    "display-name":
                        _constant: "Syslog Servers"
        _value: complex-array
    -
        _groups:
            "${root}//radius/entry/server/entry":
                _value.complex:
                    "host":
                        _text: "ip-address"
                    "port":
                        _text: "port"
                _tags:
                    "im.name":
                        _constant: "radius-servers"
                    "live-config":
                        _constant: "true"
                    "display-name":
                        _constant: "RADIUS Servers"
        _value: complex-array
    -
        _groups:
            "/response/result/config/devices/entry/deviceconfig/system/dns-setting/servers/*":
                _value.complex:
                    "ipaddress":
                        _text: .
                _tags:
                    "im.name":
                        _constant: "dns-servers"
                    "live-config":
                        _constant: "true"
                    "display-name":
                        _constant: "DNS Servers"
        _value: complex-array
    -
        _groups:
            "/response/result/config/devices/entry/deviceconfig/system/ntp-servers/*/ntp-server-address":
                _value.complex:
                    "ipaddress":
                        _text: .
                _tags:
                    "im.name":
                        _constant: "ntp-servers"
                    "live-config":
                        _constant: "true"
                    "display-name":
                        _constant: "NTP Servers"
        _value: complex-array
    -
        _value.double:
            _count: /response/result/config/devices/entry/vsys/entry
        _tags:
            "name":
                _constant: "vsys"
            "im.name":
                _constant: "license-elements-used"
            "live-config":
                _constant: "true"
            "display-name":
                _constant: "Licenses - Usage"
            "im.dstype.displayType":
                _constant: "number"
            "im.identity-tags":
                _constant: "name"
    -
        _tags:
            "im.name":
                _constant: "unencrypted-snmp-configured"
        _temp:
            hasSnmpV2c:
                _count: "/response/result/config/devices/entry/deviceconfig/system/snmp-setting/access-setting/version/v2c"
        _transform:
            _value.complex:
                value: |
                    {
                        if (temp("hasSnmpV2c") == "1") {
                            print "true"
                        } else {
                            print "false"
                        }
                    }
    -
        _tags:
            "im.name":
                _constant: "telnet-enabled"
        _temp:
            hasTelnetAtNo:
                _count: "${root}/devices/entry/deviceconfig/system/service/disable-telnet[text() = 'no']"
        _transform:
            _value.complex:
                value: |
                    {
                        if (temp("hasTelnetAtNo") == "1") {
                            print "true"
                        } else {
                            print "false"
                        }
                    }
    -
        _tags:
            "im.name":
                _constant: "http-server-enabled"
        _temp:
            hasHttpAtNo:
                _count: "${root}/devices/entry/deviceconfig/system/service/disable-http[text() = 'no']"
        _transform:
            _value.complex:
                value: |
                    {
                        if (temp("hasHttpAtNo") == "1") {
                            print "true"
                        } else {
                            print "false"
                        }
                    }

cross_vendor_snmp_v2

package com.indeni.server.rules.library.templatebased.crossvendor

import com.indeni.ruleengine.expressions.conditions.{Equals => RuleEquals, Not => RuleNot, Or => RuleOr}
import com.indeni.ruleengine.expressions.data.SnapshotExpression
import com.indeni.server.rules.RuleContext
import com.indeni.server.rules.library._
import com.indeni.server.sensor.models.managementprocess.alerts.dto.AlertSeverity

/**
  *
  */
case class cross_vendor_snmp_v2() extends SingleSnapshotValueCheckTemplateRule(
  ruleName = "cross_vendor_snmp_v2",
  ruleFriendlyName = "All Devices: SNMPv2c/v1 used",
  ruleDescription = "As SNMPv2 is not very secure, Indeni will alert if it is used.",
  severity = AlertSeverity.WARN,
  metricName = "unencrypted-snmp-configured",
  alertDescription = "Older versions of SNMP do not use encryption. This could potentially allow an attacker to obtain valuable information about the infrastructure.",
  baseRemediationText = "Configure SNMPv3 instead.",
  complexCondition = RuleEquals(RuleHelper.createComplexStringConstantExpression("true"), SnapshotExpression("unencrypted-snmp-configured").asSingle().mostRecent().value().noneable)
)(ConditionalRemediationSteps.VENDOR_F5 -> "Review https://support.f5.com/csp/article/K13625")