Auth

Authentication is present in almost all web applications nowadays.

CSRF

Cross-Site Request Forgery (CSRF) is an attack that forces an end user to execute unwanted actions on a web application in which they're currently authenticated.

• Prohibit CSRF middleware before methodOverride

  Prohibits express.csrf() middleware before express.methodOverride().

  ESLint

Cryptography

Cryptography is a security technique widely used and there are several cryptographic functions, but not all of them are secure.

• Prohibit potential hot spot string comparisons

  Prohibits potential hot spot string comparisons of passwords, secrets and hashes.

  ESLint
• Prohibit crypto.pseudoRandomBytes

  Prohibits crypto.pseudoRandomBytes since it's not cryptographically strong.

  ESLint

DoS

The Denial of Service (DoS) attack is focused on making a resource (site, application, server) unavailable for the purpose it was designed.

• Prohibit Buffer with noAssert

  Prohibits buffer read / write calls that use noAssert set to true.

  ESLint

File Access

An attacker may use special paths to access files that should not be accessible.

• Prohibit calls to fs functions with expression

  Prohibits calls to fs functions that take a non Literal value as the filename parameter.

  ESLint

Firefox OS

Sensitive APIs of Firefox OS.

• camera permission

  This function allows reading and modifying camera settings and is only available to higher privileged Firefox OS application.

  ESLint
• Cellbroadcast permission

  Usage of sensitive API

  ESLint
• Usage of mozNetworkStats

  Usage of sensitive API

  ESLint
• handle mozActivity

  This function allows registering message handlers for Web Activities.

  ESLint
• embed-apps permission

  Usage of sensitive API

  ESLint
• bluetooth permission

  This function is only available to higher privileged Firefox OS applications.

  ESLint
• Browser permission

  This function is only available to higher privileged Firefox OS applications. MozBrowser frames have specific, elevated permissions.

  ESLint
• wappush permission

  This specifies a handler for WAP Push notifications. In general, mozSetMessageHandler allows handling WebActivities. The origin of the activity and its data might be untrusted.

  ESLint
• Create contextual fragment

  Writing user specified HTML to the DOM may lead to Cross-Site Scripting

  ESLint
• mobile network permission

  Usage of sensitive API

  ESLint
• Call addEventListener

  Certain events (like message) may cause untrusted third party data.

  ESLint
• Message handler

  Check to make sure message handler validates to protect against malicious cross-origin message.

  ESLint
• Usage of mozPermissionSettings

  This function is only available to higher privileged Firefox OS applications. It allows managing and revoking apps permissions.

  ESLint
• Usage of mozMobileMessage

  Usage of sensitive API

  ESLint
• device-storage:videos permission

  Usage of sensitive API

  ESLint
• Webapps manage

  This function is only available to higher privileged Firefox OS applications. It allows managing the phone's app.

  ESLint
• Usage of mozContacts

  This function allows reading and modifying the phone's contacts. It is only available to higher privileged Firefox OS applications.

  ESLint
• new MozActivity()

  This function creates new Web Activities and can transfer data from one app to another

  ESLint
• Make InterAppCommunication

  ESLint
• device-storage:crashes permission

  Usage of sensitive API

  ESLint
• device-storage:pictures permission

  Usage of sensitive API

  ESLint
• Usage of mozNotification

  Usage of sensitive API

  ESLint
• speaker-control permission

  Usage of sensitive API

  ESLint
• Usage of mozTelephony

  Usage of sensitive API

  ESLint
• device-storage:sdcard permission

  Usage of sensitive API

  ESLint
• device-storage:music permission

  Usage of sensitive API

  ESLint
• Usage of mozWifiManager

  This function is only available to higher privileged Firefox OS applications. It allows managing the Wifi features of the phone.

  ESLint
• mozSystem object

  XMLHttpRequests of type system may contact and read data from third party origins

  ESLint
• Background sensors permission

  This exercises the proximity API to check whether the phone is close to something (i.e. held to the ear).

  ESLint
• Usage of mozSettings

  This function is only available to higher privileged Firefox OS applications. It allows access to the phone's settings

  ESLint
• device-storage: apps permission

  Usage of sensitive API

  ESLint
• network-events permission

  Usage of sensitive API

  ESLint
• Usage of mozVoicemail

  This function is only available to higher privileged Firefox OS applications. It allows controlling the phone's Voicemail features.

  ESLint
• handle system message

  This function allows registering message handlers for Web Activities.

  ESLint
• Usage of mozPower

  This function is only available to higher privileged Firefox OS applications. It allows access to power management features.

  ESLint
• geolocation permission

  This function gives access to information about the user's location.

  ESLint
• video-capture permission

  This function allows prompting for audio and video recording.

  ESLint
• Usage of mozKeyboard

  Usage of sensitive API

  ESLint
• mobile network permission

  Usage of sensitive API

  ESLint
• alarms permission

  This function is only available to higher privileged Firefox OS applications and allows setting and editing alarms. Frequent alarms might prevent power saving and drain the battery.

  ESLint
• network-events permission

  Usage of sensitive API

  ESLint
• Usage of mozMobileConnection

  Usage of sensitive API

  ESLint
• Time permission

  This function is only available to higher privileged Firefox OS applications.

  ESLint
• Receive InterAppCommunication

  This function sets a handler for inter app communication messages. In general, mozSetMessageHandler allows handling WebActivities. The origin of the activity and its data might be untrusted.

  ESLint
• Usage of mozInputMethod

  Usage of sensitive API

  ESLint
• Usage of mozDownloadManager

  Usage of sensitive API

  ESLint
• Usage of getDeviceStorage

  Usage of sensitive API

  ESLint
• Usage of mozNfc

  Usage of sensitive API

  ESLint
• Idle permission

  This function is only available to higher privileged Firefox OS applications.

  ESLint
• Access datastore

  This API allows access to datastores that may be used to serve or retrieve data from third party apps

  ESLint
• Usage of mozMobileConnections

  Usage of sensitive API

  ESLint
• Usage of mozTCPSocket

  This function allows creating connections and communicating with remote servers.

  ESLint
• Usage pf cell broadcasts

  Usage of sensitive API

  ESLint
• Usage of mozPhoneNumberService

  Usage of sensitive API

  ESLint
• Usage of mozFMRadio

  This function is only available to higher privileged Firefox OS applications.

  ESLint
• Input manage permission

  Usage of sensitive API

  ESLint

Input validation

Input not validated may originate SQL Injection attacks for instance.

• Prohibit calls to require with expression

  Prohibits calls to require with non-literal argument.

  ESLint
• desktop-notification permission

  This function generate notifications from the app. It is only available to higher privileged Firefox OS applications.

  ESLint
• Prohibit Script URLs

  Prohibits using return of a script as URL, you have to parse it first

  ESLint
• new Function()

  Controlling of the first argument to Function(...) results in direct script execution.

  ESLint
• Prohibit no Markup escaping in Mustache

  Prohibits having disabled Markup escaping in Mustache.

  ESLint
• Prohibit RegExp's with expression

  Prohibits RegExp's created from non-literal strings.

  ESLint
• Call setInterval

  Calling setInterval with a first argument as string (or string concatenation) with user input may lead to XSS

  ESLint
• Call execScript

  Using execScript with user input leads to Cross Site Scripting (Internet Explorer only)

  ESLint
• Prohibit eval with expression

  Prohibits eval statement with non Literal argument types.

  ESLint
• ESLint_no-unsafe-innerhtml_no-unsafe-innerhtml

  ESLint_no-unsafe-innerhtml_no-unsafe-innerhtml

  ESLint
• Call setTimeout

  Calling setTimeout with a first argument as string (or string concatenation) with user input may lead to XSS

  ESLint
• Usage parseFromString

  This function creates a DOM from strings. Depending on their source it is likely important to sanitize it before an insertion into the DOM happens

  ESLint
• Call function

  Controlling of the first argument to Function(...) results in direct script execution.

  ESLint
• Prohibit eval()

  Prohibits the usage of eval()

  ESLint
• Call setImmediate

  Calling setImmediate with a first argument as string (or string concatenation) with user input may lead to XSS

  ESLint
• Call generateCRMFRequest

  Due to a bug in Firefox, this function may be used as an obfuscated way to call execute scripts from strings (like eval). This may lead to Cross-Site-Scripting.

  ESLint
• Call eval

  Controlling of the first argument to eval(...) results in direct script execution.

  ESLint

Insecure Storage

Storing sensitive data using this APIs is not safe.

• Local Storage

  Client-side data storage.

  ESLint
• Session Storage

  Client-side data storage.

  ESLint
• Local Storage

  Client-side data storage.

  ESLint
• Session storage

  Client-side data storage.

  ESLint
• IndexedDB

  Client-side data storage.

  ESLint
• ESLint_scanjs-rules_property_indexedDB

  ESLint_scanjs-rules_property_indexedDB

  ESLint

Insecure modules/libraries

Consider possible security implications associated with some modules.

Other

Other language specific security issues.

• Prohibit instances of child_process

  Prohibits instances of child_process.

  ESLint
• Prohibit instances of var[var]

  Prohibits instances of var[var].

  ESLint

Regex

Regex can be used in a Denial of Service attack, that exploits the fact that most Regular Expression implementations may reach heavy computation situations that cause them to work very slowly (exponentially related to input size).

• Prohibit Unsafe Regular Expression

  Prohibits Unsafe Regular Expression (new RegExp).

  ESLint

Routes

Badly configured routes can give unintended access to an attacker.

SQL Injection

A SQL injection attack consists of insertion or 'injection' of a SQL query via the input data from the client to the application.

Unexpected behaviour

Assigning values to private APIs might lead to unexpected behaviour.

• Assign to src

  Assignments to the document's location may lead to spoofing and unexpected redirects. It may also lead to script execution, depending on the affected HTML Tag (i.e. object)

  ESLint
• Assign to mozAudioChannelType

  This function is only available to higher privileged Firefox OS applications.

  ESLint
• Assign to protocol

  Assignments to the document's location may lead to spoofing and unexpected redirects.

  ESLint
• Assign to location

  Assignments to the document's location may lead to spoofing and unexpected redirects. Furthermore, it can cause Cross-Site Scripting, when javascipt: URIs are used

  ESLint
• Assign to mozAudioChannel

  This function is only available to higher privileged Firefox OS applications.

  ESLint
• Assign to search

  Assignments to the document's location may lead to spoofing and unexpected redirects.

  ESLint
• Assign to hostname

  Assignments to the document's location may lead to spoofing and unexpected redirects.

  ESLint
• Assign to pathname

  Assignments to the document's location may lead to spoofing and unexpected redirects.

  ESLint
• Checks for assignments in condition tests.

  Unintended use of AssignmentExpression in If Statement.

  ESLint
• Assign to href

  Assignments to the document's location may lead to spoofing and unexpected redirects. Furthermore, it can cause Cross-Site Scripting, when javascipt: URIs are used.

  ESLint
• Assign to onmessage

  Check to make sure message handler validates to protect against malicious cross-origin message.

  ESLint

XSS

XSS enables attackers to inject client-side scripts into web pages viewed by other users.

• Call document.write

  Writing user specified HTML to the DOM may lead to Cross-Site Scripting

  ESLint
• attention permission

  Attention popups fill the whole display. URLs pointing to javascript: and data: protocols can lead to XSS. Popups can also confuse and misdirect users.

  ESLint
• Call document.writeln

  Writing user specified HTML to the DOM may lead to Cross-Site Scripting

  ESLint
• ESLint_scanjs-rules_call_open_remote=true

  ESLint_scanjs-rules_call_open_remote=true

  ESLint