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 Security Alert: [low] [braces]
  Type: Regular Expression Denial of Service
  Advisory Version: <2.3.1
  Current version: 0.1.5
  Recommendation: Upgrade to version 2.3.1 or higher.
  Url: https://npmjs.com/advisories/786
  Detail: Versions of `braces` prior to 2.3.1 are vulnerable to Regular Expression Denial of Service (ReDoS). Untrusted input may cause catastrophic backtracking while matching regular expressions. This can cause the application to be unresponsive leading to
Denial of Service.
 



 Security Alert: [high] [cached-path-relative]
  Type: Prototype Pollution
  Advisory Version: <=1.0.1
  Current version: 1.0.1
  Recommendation: Update to version 1.0.2 or later.
  Url: https://npmjs.com/advisories/739
  Detail: Version of `cached-path-relative` before 1.0.2 are vulnerable to prototype pollution.
 



 Security Alert: [moderate] [concat-stream]
  Type: Memory Exposure
  Advisory Version: >=1.3.0 <1.3.2 || >=1.4.0 <1.4.11 || >=1.5.0 <1.5.2
  Current version: 1.5.0
  Recommendation: Update to version 1.5.2, 1.4.11, 1.3.2 or later.

If you are unable to update make sure user provided input into the `write()` function is not a number.
  Url: https://npmjs.com/advisories/597
  Detail: Versions of `concat-stream` before 1.5.2 are vulnerable to memory exposure if userp provided input is passed into `write()`

Versions <1.3.0 are not affected due to not using unguarded Buffer constructor.

 



 Security Alert: [low] [debug]
  Type: Regular Expression Denial of Service
  Advisory Version: <= 2.6.8 || >= 3.0.0 <= 3.0.1
  Current version: 0.7.4
  Recommendation: Version 2.x.x: Update to version 2.6.9 or later.
Version 3.x.x: Update to version 3.1.0 or later.

  Url: https://npmjs.com/advisories/534
  Detail: Affected versions of `debug` are vulnerable to regular expression denial of service when untrusted user input is passed into the `o` formatter. 

As it takes 50,000 characters to block the event loop for 2 seconds, this issue is a low severity issue.
 



 Security Alert: [low] [deep-extend]
  Type: Prototype Pollution
  Advisory Version: <=0.5.0
  Current version: 0.4.2
  Recommendation: Update to version 0.5.1 or later.
  Url: https://npmjs.com/advisories/612
  Detail: Versions of `deep-extend` before 0.5.1 are vulnerable to prototype pollution.
 



 Security Alert: [high] [fstream]
  Type: Arbitrary File Overwrite
  Advisory Version: <1.0.12
  Current version: 1.0.11
  Recommendation: Upgrade to version 1.0.12 or later.
  Url: https://npmjs.com/advisories/886
  Detail: Versions of `fstream` prior to 1.0.12 are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system and a file that matches the hardlink will overwrite the system's file with the co
ntents of the extracted file. The `fstream.DirWriter()` function is vulnerable.
 



 Security Alert: [critical] [growl]
  Type: Command Injection
  Advisory Version: <1.10.2
  Current version: 1.9.2
  Recommendation: Update to version 1.10.2 or later.
  Url: https://npmjs.com/advisories/146
  Detail: Affected versions of `growl` do not properly sanitize input prior to passing it into a shell command, allowing for arbitrary command execution.
 



 Security Alert: [moderate] [hoek]
  Type: Prototype Pollution
  Advisory Version: <= 4.2.0 || >= 5.0.0 < 5.0.3
  Current version: 2.16.3
  Recommendation: Update to version 4.2.1, 5.0.3 or later.
  Url: https://npmjs.com/advisories/566
  Detail: Versions of `hoek` prior to 4.2.1 and 5.0.3 are vulnerable to prototype pollution.

The `merge` function, and the `applyToDefaults` and `applyToDefaultsWithShallow` functions which leverage `merge` behind the scenes, are vulnerable to a prototype pollution attack when provided an _unvalidated_ payload created from a JSON string containing th
e `__proto__` property.

This can be demonstrated like so:

```javascript
var Hoek = require('hoek');
var malicious_payload = '{"__proto__":{"oops":"It works !"}}';

var a = {};
console.log("Before : " + a.oops);
Hoek.merge({}, JSON.parse(malicious_payload));
console.log("After : " + a.oops);
```

This type of attack can be used to overwrite existing properties causing a potential denial of service.
 



 Security Alert: [high] [js-yaml]
  Type: Code Injection
  Advisory Version: <3.13.1
  Current version: 3.8.4
  Recommendation: Upgrade to version 3.13.1.
  Url: https://npmjs.com/advisories/813
  Detail: Versions of `js-yaml` prior to 3.13.1 are vulnerable to Code Injection. The `load()` function may execute arbitrary code injected through a malicious YAML file. Objects that have `toString` as key, JavaScript code as value and are used as explicit m
apping keys allow attackers to execute the supplied code through the `load()` function. The `safeLoad()` function is unaffected.

An example payload is 
`{ toString: !<tag:yaml.org,2002:js/function> 'function (){return Date.now()}' } : 1` 
which returns the object 
{
  "1553107949161": 1
}
 



 Security Alert: [moderate] [js-yaml]
  Type: Denial of Service
  Advisory Version: <3.13.0
  Current version: 3.8.4
  Recommendation: Upgrade to version 3.13.0.
  Url: https://npmjs.com/advisories/788
  Detail: Versions of `js-yaml` prior to 3.13.0 are vulnerable to Denial of Service. By parsing a carefully-crafted YAML file, the node process stalls and may exhaust system resources leading to a Denial of Service.
 



 Security Alert: [moderate] [lodash]
  Type: Prototype Pollution
  Advisory Version: <4.17.11
  Current version: 3.10.1
  Recommendation: Update to version 4.17.11 or later.
  Url: https://npmjs.com/advisories/782
  Detail: Versions of `lodash` before 4.17.5 are vulnerable to prototype pollution. 

The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of `Object` via `{constructor: {prototype: {...}}}` causing the addition or modification of an existing property that will exist on all
objects.


 



 Security Alert: [low] [lodash]
  Type: Prototype Pollution
  Advisory Version: <4.17.5
  Current version: 3.10.1
  Recommendation: Update to version 4.17.5 or later.
  Url: https://npmjs.com/advisories/577
  Detail: Versions of `lodash` before 4.17.5 are vulnerable to prototype pollution. 

The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of `Object` via `__proto__` causing the addition or modification of an existing property that will exist on all objects.


 



 Security Alert: [moderate] [mime]
  Type: Regular Expression Denial of Service
  Advisory Version: < 1.4.1 || > 2.0.0 < 2.0.3
  Current version: 1.3.6
  Recommendation: Update to version 2.0.3 or later.
  Url: https://npmjs.com/advisories/535
  Detail: Affected versions of `mime` are vulnerable to regular expression denial of service when a mime lookup is performed on untrusted user input.
 



 Security Alert: [high] [parsejson]
  Type: Regular Expression Denial of Service
  Advisory Version: <=0.0.3
  Current version: 0.0.3
  Recommendation: The `parsejson` package has not been functionally updated since it was initially released.

Additionally, it provides functionality which is natively included in Node.js, and therefore the native `JSON.parse()` should be used, for both performance and security reasons.
  Url: https://npmjs.com/advisories/528
  Detail: Affected versions of `parsejson` are vulnerable to a regular expression denial of service when parsing untrusted user input.
 



 Security Alert: [low] [randomatic]
  Type: Cryptographically Weak PRNG
  Advisory Version: <3.0.0
  Current version: 1.1.6
  Recommendation: Update to version 3.0.0 or later.

  Url: https://npmjs.com/advisories/157
  Detail: Affected versions of `randomatic` generate random values using a cryptographically weak psuedo-random number generator. This may result in predictable values instead of random values as intended.


 



 Security Alert: [high] [sshpk]
  Type: Regular Expression Denial of Service
  Advisory Version: <1.13.2 || >=1.14.0 <1.14.1
  Current version: 1.13.0
  Recommendation: Update to version 1.13.2, 1.14.1 or later.
  Url: https://npmjs.com/advisories/606
  Detail: Versions of `sshpk` before 1.13.2 or 1.14.1 are vulnerable to regular expression denial of service when parsing crafted invalid public keys.
 



 Security Alert: [moderate] [static-eval]
  Type: Sandbox Breakout / Arbitrary Code Execution
  Advisory Version: <=2.0.1
  Current version: 0.2.4
  Recommendation: Upgrade to version 2.0.2 or later.
  Url: https://npmjs.com/advisories/758
  Detail: Versions of `static-eval`prior to 2.0.2 pass untrusted user input directly to the global function constructor, resulting in an arbitrary code execution vulnerability when user input is parsed via the package.

## Proof of concept
```
var evaluate = require('static-eval');
var parse = require('esprima').parse;

var src = process.argv[2];
var payload = '(function({x}){return x.constructor})({x:"".sub})("console.log(process.env)")()'
var ast = parse(payload).body[0].expression;
console.log(evaluate(ast, {x:1}));
```
 



 Security Alert: [moderate] [static-eval]
  Type: Sandbox Breakout / Arbitrary Code Execution
  Advisory Version: <=1.1.1
  Current version: 0.2.4
  Recommendation: Update to version 2.0.0 or later.
  Url: https://npmjs.com/advisories/548
  Detail: Affected versions of `static-eval` pass untrusted user input directly to the global function constructor, resulting in an arbitrary code execution vulnerability when user input is parsed via the package.

## Proof of concept
```
var evaluate = require('static-eval');
var parse = require('esprima').parse;
var src = '(function(){console.log(process.pid)})()';
var ast = parse(src).body[0].expression;
var res = evaluate(ast, {});
// Will print the process id
```
 



 Security Alert: [moderate] [stringstream]
  Type: Out-of-bounds Read
  Advisory Version: <=0.0.5
  Current version: 0.0.5
  Recommendation: No fix is currently available for this vulnerability. It is our recommendation to not install or use this module if user input is being passed in to `stringstream`.

  Url: https://npmjs.com/advisories/664
  Detail: All versions of `stringstream` are vulnerable to out-of-bounds read as it allocates uninitialized Buffers when number is passed in input stream on Node.js 4.x and below.
 



 Security Alert: [high] [tar]
  Type: Arbitrary File Overwrite
  Advisory Version: <2.2.2 || >=3.0.0 <4.4.2
  Current version: 2.2.1
  Recommendation: For tar 4.x, upgrade to version 4.4.2 or later.
For tar 2.x, upgrade to version 2.2.2 or later.
  Url: https://npmjs.com/advisories/803
  Detail: Versions of `tar` prior to 4.4.2 for 4.x and 2.2.2 for 2.x are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink will overwrite the sys
tem's file with the contents of the extracted file.
 



 Security Alert: [high] [tough-cookie]
  Type: Regular Expression Denial of Service
  Advisory Version: <2.3.3
  Current version: 2.3.2
  Recommendation: Update to version 2.3.3 or later.
  Url: https://npmjs.com/advisories/525
  Detail: Affected versions of `tough-cookie` are susceptible to a regular expression denial of service.

The amplification on this vulnerability is relatively low - it takes around 2 seconds for the engine to execute on a malicious input which is 50,000 characters in length.

If node was compiled using the `-DHTTP_MAX_HEADER_SIZE` however, the impact of the vulnerability can be significant, as the primary limitation for the vulnerability is the default max HTTP header length in node.
 



 Security Alert: [moderate] [tunnel-agent]
  Type: Memory Exposure
  Advisory Version: <0.6.0
  Current version: 0.4.3
  Recommendation: Update to version 0.6.0 or later.
  Url: https://npmjs.com/advisories/598
  Detail: Versions of `tunnel-agent` before 0.6.0 are vulnerable to memory exposure.

This is exploitable if user supplied input is provided to the auth value and is a number.

Proof-of-concept:
```js
require('request')({
  method: 'GET',
  uri: 'http://www.example.com',
  tunnel: true,
  proxy:{
    protocol: 'http:',
    host:'127.0.0.1',
    port:8080,
    auth:USERSUPPLIEDINPUT // number
  }
});
```
 



 Security Alert: [high] [ws]
  Type: Denial of Service
  Advisory Version: <1.1.5 || >=2.0.0 <3.3.1
  Current version: 1.1.2
  Recommendation: Update to version 3.3.1 or later.
  Url: https://npmjs.com/advisories/550
  Detail: Affected versions of `ws` can crash when a specially crafted `Sec-WebSocket-Extensions` header containing `Object.prototype` property names as extension or parameter names is sent.

## Proof of concept

```
const WebSocket = require('ws');
const net = require('net');

const wss = new WebSocket.Server({ port: 3000 }, function () {
  const payload = 'constructor';  // or ',;constructor'

  const request = [
    'GET / HTTP/1.1',
    'Connection: Upgrade',
    'Sec-WebSocket-Key: test',
    'Sec-WebSocket-Version: 8',
    `Sec-WebSocket-Extensions: ${payload}`,
    'Upgrade: websocket',
    '\r\n'
  ].join('\r\n');

  const socket = net.connect(3000, function () {
    socket.resume();
    socket.write(request);
  });
});
```
 



 Security Alert: [high] [handlebars]
  Type: Prototype Pollution
  Advisory Version: <=4.0.13 || >=4.1.0 <4.1.2
  Current version: 4.0.11
  Recommendation: For handlebars 4.1.x upgrade to 4.1.2 or later.
For handlebars 4.0.x upgrade to 4.0.14 or later.
  Url: https://npmjs.com/advisories/755
  Detail: Versions of `handlebars` prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.
 



 Security Alert: [high] [cryptiles]
  Type: Insufficient Entropy
  Advisory Version: >=3.1.0 <3.1.3 || >=4.0.0 <4.1.2
  Current version: 3.1.2
  Recommendation: Update to version 3.1.3 or 4.1.2 or later.
  Url: https://npmjs.com/advisories/720
  Detail: Versions of `cryptiles` from version 3.1.0 through 3.1.2, and versions 4.0.0 to version 4.1.1 are vulnerable to insufficient entropy.  The `randomDigits` method generates digits that lack a perfect distribution over enough attempts.

 



 Security Alert: [low] [merge]
  Type: Prototype Pollution
  Advisory Version: <=1.2.0
  Current version: 1.2.0
  Recommendation: Update to version 1.2.1 or later.
  Url: https://npmjs.com/advisories/722
  Detail: Versions of `merge` before 1.2.1 are vulnerable to prototype pollution. The `merge.recursive` function can be tricked into adding or modifying properties of the Object prototype.
