From 26619e28cc7c2fbea89380cd1d30ab93751700be Mon Sep 17 00:00:00 2001
From: Jack Clancy <jack.clancy93@gmail.com>
Date: Wed, 10 Jan 2018 00:17:52 -0500
Subject: [PATCH] Enforce HTTPS / Prevent Reverse Tabnabbing (#773)

* working version of test custom rule config

* setting no imports to false so tests will pass

* adding anchor blank noopener rule, rule currently off to allow tests to pass

* removing copied code from tslint-microsoft-contrib

* adding tslint-microsoft-contrib to dev deps

* extending tslint for external http rule

* locking tslint-microsoft-contrib version and turning on target blank noopener rule

* final fixes for pull #663

* add noopener noreferrer as needed

* fixing false positives for a tags without href

* really fix linting errors

* fix imports

* remove accidently(?) added LedgerNano duplicate file
---
 .../components/BalanceSidebar/AccountInfo.tsx | 12 ++-
 common/components/BalanceSidebar/Promos.tsx   |  1 +
 common/components/ErrorScreen/index.tsx       |  2 +-
 .../TransactionSucceeded.tsx                  |  7 +-
 .../Header/components/GasPriceDropdown.tsx    |  6 +-
 .../Header/components/NavigationLink.tsx      |  8 +-
 .../components/DeterministicWalletsModal.tsx  | 10 +-
 .../WalletDecrypt/components/LedgerNano.tsx   | 10 +-
 .../WalletDecrypt/components/Mnemonic.tsx     |  2 +-
 .../WalletDecrypt/components/Trezor.tsx       |  6 +-
 common/components/ui/Help.tsx                 |  2 +-
 common/components/ui/NewTabLink.tsx           |  2 +-
 common/containers/Tabs/Help/index.tsx         |  3 +-
 .../Tabs/Swap/components/BitcoinQR.tsx        |  2 +-
 .../Tabs/Swap/components/CurrentRates.tsx     |  7 +-
 .../Swap/components/SwapInfoHeaderTitle.tsx   |  7 +-
 .../Tabs/Swap/components/SwapProgress.tsx     |  4 +-
 common/index.html                             |  8 +-
 .../noExternalHttpLinkRule.js                 | 95 ++++++++++++++++++
 .../noExternalHttpLinkRule.ts                 | 96 +++++++++++++++++++
 package.json                                  |  1 +
 tslint.json                                   |  6 +-
 22 files changed, 266 insertions(+), 31 deletions(-)
 create mode 100644 custom_linting_rules/noExternalHttpLinkRule.js
 create mode 100644 custom_linting_rules/noExternalHttpLinkRule.ts

diff --git a/common/components/BalanceSidebar/AccountInfo.tsx b/common/components/BalanceSidebar/AccountInfo.tsx
index 074a2188..e363b4e3 100644
--- a/common/components/BalanceSidebar/AccountInfo.tsx
+++ b/common/components/BalanceSidebar/AccountInfo.tsx
@@ -93,14 +93,22 @@ export default class AccountInfo extends React.Component<Props, State> {
             <ul className="AccountInfo-list">
               {!!blockExplorer && (
                 <li className="AccountInfo-list-item">
-                  <a href={blockExplorer.address(address)} target="_blank">
+                  <a
+                    href={blockExplorer.address(address)}
+                    target="_blank"
+                    rel="noopener noreferrer"
+                  >
                     {`${network.name} (${blockExplorer.name})`}
                   </a>
                 </li>
               )}
               {!!tokenExplorer && (
                 <li className="AccountInfo-list-item">
-                  <a href={tokenExplorer.address(address)} target="_blank">
+                  <a
+                    href={tokenExplorer.address(address)}
+                    target="_blank"
+                    rel="noopener noreferrer"
+                  >
                     {`Tokens (${tokenExplorer.name})`}
                   </a>
                 </li>
diff --git a/common/components/BalanceSidebar/Promos.tsx b/common/components/BalanceSidebar/Promos.tsx
index 06693d12..6c4ac07c 100644
--- a/common/components/BalanceSidebar/Promos.tsx
+++ b/common/components/BalanceSidebar/Promos.tsx
@@ -58,6 +58,7 @@ export default class Promos extends React.Component<{}, State> {
         className="Promos-promo"
         key={promo.href}
         target="_blank"
+        rel="noopener noreferrer"
         href={promo.href}
         style={{ backgroundColor: promo.color }}
       >
diff --git a/common/components/ErrorScreen/index.tsx b/common/components/ErrorScreen/index.tsx
index bb263c4f..643283b3 100644
--- a/common/components/ErrorScreen/index.tsx
+++ b/common/components/ErrorScreen/index.tsx
@@ -19,7 +19,7 @@ const ErrorScreen: React.SFC<Props> = ({ error }) => {
           Please contact{' '}
           <a
             target="_blank"
-            rel="noopener"
+            rel="noopener noreferrer"
             href={`mailto:support@myetherwallet.com?Subject=${SUBJECT}&body=${DESCRIPTION}`}
           >
             support@myetherwallet.com
diff --git a/common/components/ExtendedNotifications/TransactionSucceeded.tsx b/common/components/ExtendedNotifications/TransactionSucceeded.tsx
index 8385db35..074da8d0 100644
--- a/common/components/ExtendedNotifications/TransactionSucceeded.tsx
+++ b/common/components/ExtendedNotifications/TransactionSucceeded.tsx
@@ -14,7 +14,12 @@ const TransactionSucceeded = ({ txHash, blockExplorer }: TransactionSucceededPro
   return (
     <div>
       <p>{translateRaw('SUCCESS_3') + txHash}</p>
-      <a className="btn btn-xs btn-info string" href={txHashLink} target="_blank" rel="noopener">
+      <a
+        className="btn btn-xs btn-info string"
+        href={txHashLink}
+        target="_blank"
+        rel="noopener noreferrer"
+      >
         Verify Transaction
       </a>
     </div>
diff --git a/common/components/Header/components/GasPriceDropdown.tsx b/common/components/Header/components/GasPriceDropdown.tsx
index 7110a9af..a2610815 100644
--- a/common/components/Header/components/GasPriceDropdown.tsx
+++ b/common/components/Header/components/GasPriceDropdown.tsx
@@ -61,7 +61,11 @@ export default class GasPriceDropdown extends Component<Props> {
             <code>21 GWEI</code>.
           </p>
           <p>
-            <a href={`${knowledgeBaseURL}/gas/what-is-gas-ethereum`} target="_blank">
+            <a
+              href={`${knowledgeBaseURL}/gas/what-is-gas-ethereum`}
+              target="_blank"
+              rel="noopener noreferrer"
+            >
               Read more
             </a>
           </p>
diff --git a/common/components/Header/components/NavigationLink.tsx b/common/components/Header/components/NavigationLink.tsx
index 8d6f0a48..42ca117e 100644
--- a/common/components/Header/components/NavigationLink.tsx
+++ b/common/components/Header/components/NavigationLink.tsx
@@ -35,7 +35,13 @@ class NavigationLink extends React.Component<Props, {}> {
 
     const linkEl =
       link.external || !link.to ? (
-        <a className={linkClasses} href={link.to} aria-label={linkLabel} target="_blank">
+        <a
+          className={linkClasses}
+          href={link.to}
+          aria-label={linkLabel}
+          target="_blank"
+          rel="noopener noreferrer"
+        >
           {translate(link.name)}
         </a>
       ) : (
diff --git a/common/components/WalletDecrypt/components/DeterministicWalletsModal.tsx b/common/components/WalletDecrypt/components/DeterministicWalletsModal.tsx
index 15e502ae..769d088a 100644
--- a/common/components/WalletDecrypt/components/DeterministicWalletsModal.tsx
+++ b/common/components/WalletDecrypt/components/DeterministicWalletsModal.tsx
@@ -292,7 +292,11 @@ class DeterministicWalletsModalClass extends React.Component<Props, State> {
           )}
         </td>
         <td>
-          <a target="_blank" href={`https://ethplorer.io/address/${wallet.address}`}>
+          <a
+            target="_blank"
+            href={`https://ethplorer.io/address/${wallet.address}`}
+            rel="noopener noreferrer"
+          >
             <i className="DWModal-addresses-table-more" />
           </a>
         </td>
@@ -310,7 +314,9 @@ function mapStateToProps(state: AppState) {
   };
 }
 
-export const DeterministicWalletsModal = connect(mapStateToProps, {
+const DeterministicWalletsModal = connect(mapStateToProps, {
   getDeterministicWallets,
   setDesiredToken
 })(DeterministicWalletsModalClass);
+
+export default DeterministicWalletsModal;
diff --git a/common/components/WalletDecrypt/components/LedgerNano.tsx b/common/components/WalletDecrypt/components/LedgerNano.tsx
index ef993076..7d97c49e 100644
--- a/common/components/WalletDecrypt/components/LedgerNano.tsx
+++ b/common/components/WalletDecrypt/components/LedgerNano.tsx
@@ -1,7 +1,7 @@
 import './LedgerNano.scss';
 import React, { Component } from 'react';
 import translate, { translateRaw } from 'translations';
-import { DeterministicWalletsModal } from './DeterministicWalletsModal';
+import DeterministicWalletsModal from './DeterministicWalletsModal';
 import { LedgerWallet } from 'libs/wallet';
 import Ledger3 from 'vendor/ledger3';
 import LedgerEth from 'vendor/ledger-eth';
@@ -81,7 +81,7 @@ export class LedgerNanoSDecrypt extends Component<Props, State> {
           className="LedgerDecrypt-buy btn btn-sm btn-default"
           href="https://www.ledgerwallet.com/r/fa4b?path=/products/"
           target="_blank"
-          rel="noopener"
+          rel="noopener noreferrer"
         >
           {translate('Don’t have a Ledger? Order one now!')}
         </a>
@@ -92,9 +92,9 @@ export class LedgerNanoSDecrypt extends Component<Props, State> {
           Guides:
           <div>
             <a
-              href="http://support.ledgerwallet.com/knowledge_base/topics/how-to-use-myetherwallet-with-ledger"
+              href="https://support.ledgerwallet.com/knowledge_base/topics/how-to-use-myetherwallet-with-ledger"
               target="_blank"
-              rel="noopener"
+              rel="noopener noreferrer"
             >
               How to use MyEtherWallet with your Nano S
             </a>
@@ -103,7 +103,7 @@ export class LedgerNanoSDecrypt extends Component<Props, State> {
             <a
               href="https://ledger.groovehq.com/knowledge_base/topics/how-to-secure-your-eth-tokens-augur-rep-dot-dot-dot-with-your-nano-s"
               target="_blank"
-              rel="noopener"
+              rel="noopener noreferrer"
             >
               How to secure your tokens with your Nano S
             </a>
diff --git a/common/components/WalletDecrypt/components/Mnemonic.tsx b/common/components/WalletDecrypt/components/Mnemonic.tsx
index 0a880807..b9fd2ca8 100644
--- a/common/components/WalletDecrypt/components/Mnemonic.tsx
+++ b/common/components/WalletDecrypt/components/Mnemonic.tsx
@@ -2,7 +2,7 @@ import { mnemonicToSeed, validateMnemonic } from 'bip39';
 import DPATHS from 'config/dpaths';
 import React, { Component } from 'react';
 import translate, { translateRaw } from 'translations';
-import { DeterministicWalletsModal } from './DeterministicWalletsModal';
+import DeterministicWalletsModal from './DeterministicWalletsModal';
 import { formatMnemonic } from 'utils/formatters';
 
 const DEFAULT_PATH = DPATHS.MNEMONIC[0].value;
diff --git a/common/components/WalletDecrypt/components/Trezor.tsx b/common/components/WalletDecrypt/components/Trezor.tsx
index aea42c2c..26971a5b 100644
--- a/common/components/WalletDecrypt/components/Trezor.tsx
+++ b/common/components/WalletDecrypt/components/Trezor.tsx
@@ -3,7 +3,7 @@ import { TrezorWallet } from 'libs/wallet';
 import React, { Component } from 'react';
 import translate, { translateRaw } from 'translations';
 import TrezorConnect from 'vendor/trezor-connect';
-import { DeterministicWalletsModal } from './DeterministicWalletsModal';
+import DeterministicWalletsModal from './DeterministicWalletsModal';
 import './Trezor.scss';
 import { Spinner } from 'components/ui';
 const DEFAULT_PATH = DPATHS.TREZOR[0].value;
@@ -53,7 +53,7 @@ export class TrezorDecrypt extends Component<Props, State> {
           className="TrezorDecrypt-buy btn btn-sm btn-default"
           href="https://trezor.io/?a=myetherwallet.com"
           target="_blank"
-          rel="noopener"
+          rel="noopener noreferrer"
         >
           {translate('Don’t have a TREZOR? Order one now!')}
         </a>
@@ -65,7 +65,7 @@ export class TrezorDecrypt extends Component<Props, State> {
           <a
             href="https://blog.trezor.io/trezor-integration-with-myetherwallet-3e217a652e08"
             target="_blank"
-            rel="noopener"
+            rel="noopener noreferrer"
           >
             How to use TREZOR with MyEtherWallet
           </a>
diff --git a/common/components/ui/Help.tsx b/common/components/ui/Help.tsx
index 3cea97b1..de018200 100644
--- a/common/components/ui/Help.tsx
+++ b/common/components/ui/Help.tsx
@@ -11,7 +11,7 @@ interface Props {
 
 const Help = ({ size = 'x1', link }: Props) => {
   return (
-    <a href={link} className={`Help Help-${size}`} target={'_blank'}>
+    <a href={link} className={`Help Help-${size}`} target="_blank" rel="noopener noreferrer">
       <img src={icon} />
     </a>
   );
diff --git a/common/components/ui/NewTabLink.tsx b/common/components/ui/NewTabLink.tsx
index b93da2d0..cbd11930 100644
--- a/common/components/ui/NewTabLink.tsx
+++ b/common/components/ui/NewTabLink.tsx
@@ -36,7 +36,7 @@ interface NewTabLinkProps extends AAttributes {
 }
 
 const NewTabLink = ({ content, children, ...rest }: NewTabLinkProps) => (
-  <a target="_blank" rel="noopener" {...rest}>
+  <a target="_blank" rel="noopener noreferrer" {...rest}>
     {content || children}
   </a>
 );
diff --git a/common/containers/Tabs/Help/index.tsx b/common/containers/Tabs/Help/index.tsx
index 4a74cd4a..6bba17dc 100644
--- a/common/containers/Tabs/Help/index.tsx
+++ b/common/containers/Tabs/Help/index.tsx
@@ -17,6 +17,7 @@ const Help = () => (
                     <a
                       href="https://www.reddit.com/r/ethereum/comments/47nkoi/psa_check_your_ethaddressorg_wallets_and_any/d0eo45o"
                       target="_blank"
+                      rel="noopener noreferrer"
                     >
                       <span className="text-danger">{translate('HELP_Warning')}</span>
                     </a>
@@ -25,7 +26,7 @@ const Help = () => (
                 <li>
                   <h3>
                     This page is deprecated. Please check out our more up-to-date and searchable{' '}
-                    <a href={knowledgeBaseURL} target="_blank">
+                    <a href={knowledgeBaseURL} target="_blank" rel="noopener noreferrer">
                       Knowledge Base.{' '}
                     </a>
                   </h3>
diff --git a/common/containers/Tabs/Swap/components/BitcoinQR.tsx b/common/containers/Tabs/Swap/components/BitcoinQR.tsx
index 39f29758..27cd3a51 100644
--- a/common/containers/Tabs/Swap/components/BitcoinQR.tsx
+++ b/common/containers/Tabs/Swap/components/BitcoinQR.tsx
@@ -21,7 +21,7 @@ export default class BitcoinQR extends Component<Props, {}> {
             Orders that take too long will have to be processed manually &amp; and may delay the
             amount of time it takes to receive your coins.
             <br />
-            <a href="https://shapeshift.io/#/btcfee" target="_blank" rel="noopener">
+            <a href="https://shapeshift.io/#/btcfee" target="_blank" rel="noopener noreferrer">
               Please use the recommended TX fees seen here.
             </a>
           </p>
diff --git a/common/containers/Tabs/Swap/components/CurrentRates.tsx b/common/containers/Tabs/Swap/components/CurrentRates.tsx
index 6c7686c3..58ca0540 100644
--- a/common/containers/Tabs/Swap/components/CurrentRates.tsx
+++ b/common/containers/Tabs/Swap/components/CurrentRates.tsx
@@ -88,7 +88,12 @@ export default class CurrentRates extends Component<Props> {
 
         <section className="SwapRates-panel row">
           {children}
-          <a className="SwapRates-panel-logo" href={providerURL} target="_blank">
+          <a
+            className="SwapRates-panel-logo"
+            href={providerURL}
+            target="_blank"
+            rel="noopener noreferrer"
+          >
             <img src={providerLogo} width={120} height={49} />
           </a>
         </section>
diff --git a/common/containers/Tabs/Swap/components/SwapInfoHeaderTitle.tsx b/common/containers/Tabs/Swap/components/SwapInfoHeaderTitle.tsx
index d0b37a97..27e86ed8 100644
--- a/common/containers/Tabs/Swap/components/SwapInfoHeaderTitle.tsx
+++ b/common/containers/Tabs/Swap/components/SwapInfoHeaderTitle.tsx
@@ -27,7 +27,12 @@ export default class SwapInfoHeaderTitle extends Component<SwapInfoHeaderTitlePr
           <h3 className="SwapInfo-top-title">{translate('SWAP_information')}</h3>
         </div>
         <div className="col-xs-3">
-          <a className="SwapInfo-top-logo" href={bityReferralURL} target="_blank" rel="noopener">
+          <a
+            className="SwapInfo-top-logo"
+            href={bityReferralURL}
+            target="_blank"
+            rel="noopener noreferrer"
+          >
             <img className="SwapInfo-top-logo-img" src={logoToRender} />
           </a>
         </div>
diff --git a/common/containers/Tabs/Swap/components/SwapProgress.tsx b/common/containers/Tabs/Swap/components/SwapProgress.tsx
index ce390c59..a84789ab 100644
--- a/common/containers/Tabs/Swap/components/SwapProgress.tsx
+++ b/common/containers/Tabs/Swap/components/SwapProgress.tsx
@@ -49,7 +49,7 @@ export default class SwapProgress extends Component<Props, State> {
         if (destinationId !== 'BTC') {
           link = bityConfig.ETHTxExplorer(outputTx);
           linkElement = (
-            <a href={link} target="_blank" rel="noopener">
+            <a href={link} target="_blank" rel="noopener noreferrer">
               {notificationMessage}
             </a>
           );
@@ -57,7 +57,7 @@ export default class SwapProgress extends Component<Props, State> {
         } else {
           link = bityConfig.BTCTxExplorer(outputTx);
           linkElement = (
-            <a href={link} target="_blank" rel="noopener">
+            <a href={link} target="_blank" rel="noopener noreferrer">
               {notificationMessage}
             </a>
           );
diff --git a/common/index.html b/common/index.html
index d77f5fbf..69e84eb1 100644
--- a/common/index.html
+++ b/common/index.html
@@ -22,7 +22,7 @@
       </p>
       <p>
         If you are not sure why you are seeing this message, or are unsure of how to enable Javascript, please visit
-        <a href="https://www.enable-javascript.com/" rel="noopener" target="_blank">enable-javascript.com</a>
+        <a href="https://www.enable-javascript.com/" rel="noopener noreferrer" target="_blank">enable-javascript.com</a>
         to learn more.
       </p>
     </div>
@@ -41,18 +41,18 @@
         to a laptop or computer to continue using MyEtherWallet.
       </p>
       <div class="BadBrowser-content-browsers is-desktop">
-        <a class="BadBrowser-content-browsers-browser firefox" href="https://www.mozilla.org/en-US/firefox/new/" rel="noopener" target="_blank">
+        <a class="BadBrowser-content-browsers-browser firefox" href="https://www.mozilla.org/en-US/firefox/new/" rel="noopener noreferrer" target="_blank">
           <span class="BadBrowser-content-browsers-browser-name">
             Firefox
           </span>
         </a>
-        <a class="BadBrowser-content-browsers-browser chrome" href="https://www.google.com/chrome/browser/desktop/index.html" rel="noopener"
+        <a class="BadBrowser-content-browsers-browser chrome" href="https://www.google.com/chrome/browser/desktop/index.html" rel="noopener noreferrer"
           target="_blank">
           <span class="BadBrowser-content-browsers-browser-name">
             Chrome
           </span>
         </a>
-        <a class="BadBrowser-content-browsers-browser opera" href="http://www.opera.com/" rel="noopener" target="_blank">
+        <a class="BadBrowser-content-browsers-browser opera" href="http://www.opera.com/" rel="noopener noreferrer" target="_blank">
           <span class="BadBrowser-content-browsers-browser-name">
             Opera
           </span>
diff --git a/custom_linting_rules/noExternalHttpLinkRule.js b/custom_linting_rules/noExternalHttpLinkRule.js
new file mode 100644
index 00000000..45741cfd
--- /dev/null
+++ b/custom_linting_rules/noExternalHttpLinkRule.js
@@ -0,0 +1,95 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = Object.setPrototypeOf ||
+        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
+    return function (d, b) {
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+exports.__esModule = true;
+var ts = require("typescript");
+var Lint = require("tslint");
+var ErrorTolerantWalker_1 = require("../node_modules/tslint-microsoft-contrib/utils/ErrorTolerantWalker");
+var JsxAttribute_1 = require("../node_modules/tslint-microsoft-contrib/utils/JsxAttribute");
+var FAILURE_STRING = 'Anchor tags with an external link must use https';
+/**
+ * Implementation of the no-external-http-link rule.
+ */
+var Rule = /** @class */ (function (_super) {
+    __extends(Rule, _super);
+    function Rule() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    Rule.prototype.apply = function (sourceFile) {
+        if (sourceFile.languageVariant === ts.LanguageVariant.JSX) {
+            return this.applyWithWalker(new NoExternalHttpLinkRuleWalker(sourceFile, this.getOptions()));
+        }
+        else {
+            return [];
+        }
+    };
+    Rule.metadata = {
+        ruleName: 'tno-external-http-link',
+        type: 'functionality',
+        description: 'Anchor tags with an external link must use https',
+        options: null,
+        optionsDescription: '',
+        typescriptOnly: true,
+        issueClass: 'SDL',
+        issueType: 'Error',
+        severity: 'Critical',
+        level: 'Mandatory',
+        group: 'Security',
+        commonWeaknessEnumeration: '242,676'
+    };
+    return Rule;
+}(Lint.Rules.AbstractRule));
+exports.Rule = Rule;
+var NoExternalHttpLinkRuleWalker = /** @class */ (function (_super) {
+    __extends(NoExternalHttpLinkRuleWalker, _super);
+    function NoExternalHttpLinkRuleWalker() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    NoExternalHttpLinkRuleWalker.prototype.visitJsxElement = function (node) {
+        var openingElement = node.openingElement;
+        this.validateOpeningElement(openingElement);
+        _super.prototype.visitJsxElement.call(this, node);
+    };
+    NoExternalHttpLinkRuleWalker.prototype.visitJsxSelfClosingElement = function (node) {
+        this.validateOpeningElement(node);
+        _super.prototype.visitJsxSelfClosingElement.call(this, node);
+    };
+    NoExternalHttpLinkRuleWalker.prototype.validateOpeningElement = function (openingElement) {
+        if (openingElement.tagName.getText() === 'a') {
+            var allAttributes = JsxAttribute_1.getJsxAttributesFromJsxElement(openingElement);
+            var href = allAttributes.href;
+            if (href !== null && !isSafeHrefAttributeValue(href) && JsxAttribute_1.getStringLiteral(href) !== 'undefined') {
+                this.addFailureAt(openingElement.getStart(), openingElement.getWidth(), FAILURE_STRING);
+            }
+        }
+    };
+    return NoExternalHttpLinkRuleWalker;
+}(ErrorTolerantWalker_1.ErrorTolerantWalker));
+function isSafeHrefAttributeValue(attribute) {
+    if (JsxAttribute_1.isEmpty(attribute)) {
+        return false;
+    }
+    if (attribute.initializer.kind === ts.SyntaxKind.JsxExpression) {
+        var expression = attribute.initializer;
+        if (expression.expression !== null &&
+            expression.expression.kind !== ts.SyntaxKind.StringLiteral) {
+            return true; // attribute value is not a string literal, so do not validate
+        }
+    }
+    var stringValue = JsxAttribute_1.getStringLiteral(attribute);
+    if (stringValue === '#') {
+        return true;
+    }
+    else if (stringValue === null || stringValue.length === 0) {
+        return false;
+    }
+    return stringValue.indexOf('https://') >= 0;
+}
diff --git a/custom_linting_rules/noExternalHttpLinkRule.ts b/custom_linting_rules/noExternalHttpLinkRule.ts
new file mode 100644
index 00000000..8f88e2c2
--- /dev/null
+++ b/custom_linting_rules/noExternalHttpLinkRule.ts
@@ -0,0 +1,96 @@
+import * as ts from 'typescript';
+import * as Lint from 'tslint';
+
+import { ErrorTolerantWalker } from '../node_modules/tslint-microsoft-contrib/utils/ErrorTolerantWalker';
+import { ExtendedMetadata } from '../node_modules/tslint-microsoft-contrib/utils/ExtendedMetadata';
+import { Utils } from '../node_modules/tslint-microsoft-contrib/utils/Utils';
+
+import {
+  getJsxAttributesFromJsxElement,
+  getStringLiteral,
+  isEmpty
+} from '../node_modules/tslint-microsoft-contrib/utils/JsxAttribute';
+
+const FAILURE_STRING = 'Anchor tags with an external link must use https';
+
+/**
+ * Implementation of the no-external-http-link rule.
+ */
+export class Rule extends Lint.Rules.AbstractRule {
+  public static metadata: ExtendedMetadata = {
+    ruleName: 'tno-external-http-link',
+    type: 'functionality',
+    description: 'Anchor tags with an external link must use https',
+    options: null,
+    optionsDescription: '',
+    typescriptOnly: true,
+    issueClass: 'SDL',
+    issueType: 'Error',
+    severity: 'Critical',
+    level: 'Mandatory',
+    group: 'Security',
+    commonWeaknessEnumeration: '242,676'
+  };
+
+  public apply(sourceFile: ts.SourceFile): Lint.RuleFailure[] {
+    if (sourceFile.languageVariant === ts.LanguageVariant.JSX) {
+      return this.applyWithWalker(new NoExternalHttpLinkRuleWalker(sourceFile, this.getOptions()));
+    } else {
+      return [];
+    }
+  }
+}
+
+class NoExternalHttpLinkRuleWalker extends ErrorTolerantWalker {
+  protected visitJsxElement(node: ts.JsxElement): void {
+    const openingElement: ts.JsxOpeningElement = node.openingElement;
+    this.validateOpeningElement(openingElement);
+    super.visitJsxElement(node);
+  }
+
+  protected visitJsxSelfClosingElement(node: ts.JsxSelfClosingElement): void {
+    this.validateOpeningElement(node);
+    super.visitJsxSelfClosingElement(node);
+  }
+
+  private validateOpeningElement(openingElement: ts.JsxOpeningLikeElement): void {
+    if (openingElement.tagName.getText() === 'a') {
+      const allAttributes: { [propName: string]: ts.JsxAttribute } = getJsxAttributesFromJsxElement(
+        openingElement
+      );
+      const href: ts.JsxAttribute = allAttributes.href;
+      if (
+        href !== null &&
+        !isSafeHrefAttributeValue(href) &&
+        getStringLiteral(href) !== 'undefined'
+      ) {
+        this.addFailureAt(openingElement.getStart(), openingElement.getWidth(), FAILURE_STRING);
+      }
+    }
+  }
+}
+
+function isSafeHrefAttributeValue(attribute: ts.JsxAttribute): boolean {
+  if (isEmpty(attribute)) {
+    return false;
+  }
+
+  if (attribute.initializer.kind === ts.SyntaxKind.JsxExpression) {
+    const expression: ts.JsxExpression = <ts.JsxExpression>attribute.initializer;
+    if (
+      expression.expression !== null &&
+      expression.expression.kind !== ts.SyntaxKind.StringLiteral
+    ) {
+      return true; // attribute value is not a string literal, so do not validate
+    }
+  }
+
+  const stringValue = getStringLiteral(attribute);
+  if (stringValue === '#') {
+    return true;
+  } else if (stringValue === null || stringValue.length === 0) {
+    return false;
+  }
+
+  return stringValue.indexOf('https://') >= 0;
+}
diff --git a/package.json b/package.json
index 918b0429..6b19cf05 100644
--- a/package.json
+++ b/package.json
@@ -109,6 +109,7 @@
     "ts-loader": "3.2.0",
     "tslint": "5.8.0",
     "tslint-config-prettier": "1.6.0",
+    "tslint-microsoft-contrib": "5.0.1",
     "tslint-react": "3.3.3",
     "types-rlp": "0.0.1",
     "typescript": "2.6.2",
diff --git a/tslint.json b/tslint.json
index 1f943613..122d5c9b 100644
--- a/tslint.json
+++ b/tslint.json
@@ -23,7 +23,9 @@
     "no-var-requires": false,
     "jsx-wrap-multiline": false,
     "comment-format": false,
-    "ordered-imports": false
+    "ordered-imports": false,
+    "react-anchor-blank-noopener": true,
+    "no-external-http-link": true
   },
-  "rulesDirectory": []
+  "rulesDirectory": ["node_modules/tslint-microsoft-contrib", "custom_linting_rules"]
 }