Version Details and Security Vulnerabilities

Versions of uglify-js prior to 2.4.24 are affected by a vulnerability which may cause crafted JavaScript to have altered functionality after minification.

Recommendation

Upgrade UglifyJS to version >= 2.4.24.

Versions of uglify-js prior to 2.6.0 are affected by a regular expression denial of service vulnerability when malicious inputs are passed into the parse() method.

Proof of Concept

var u = require('uglify-js');
var genstr = function (len, chr) {
    var result = "";
    for (i=0; i<=len; i++) {
        result = result + chr;
    }

    return result;
}

u.parse("var a = " + genstr(process.argv[2], "1") + ".1ee7;");

Results

$ time node test.js 10000
real	0m1.091s
user	0m1.047s
sys	0m0.039s

$ time node test.js 80000
real	0m6.486s
user	0m6.229s
sys	0m0.094s

Recommendation

Update to version 2.6.0 or later.

Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.

Affected versions of node-uuid consistently fall back to using Math.random as an entropy source instead of crypto, which may result in guessable UUID's.

Recommendation

Update to version 1.4.4 or later.

Affected versions of request will disclose local system memory to remote systems in certain circumstances. When a multipart request is made, and the type of body is number, then a buffer of that size will be allocated and sent to the remote server as the body.

Proof of Concept

var request = require('request');
var http = require('http');

var serveFunction = function (req, res){
	req.on('data', function (data) {
            console.log(data)
        });
	res.end();
};
var server = http.createServer(serveFunction);
server.listen(8000);

request({
	method: "POST",
	uri: 'http://localhost:8000',
	multipart: [{body:500}]
},function(err,res,body){});

Recommendation

Update to version 2.68.0 or later

The request package through 2.88.2 for Node.js and the @cypress/request package prior to 3.0.0 allow a bypass of SSRF mitigations via an attacker-controller server that does a cross-protocol redirect (HTTP to HTTPS, or HTTPS to HTTP).

NOTE: The request package is no longer supported by the maintainer.

Versions of ecstatic prior to 4.1.2, 3.3.2 or 2.2.2 are vulnerable to Open Redirect. The package fails to validate redirects, allowing attackers to craft requests that result in an HTTP 301 redirect to any other domains.

Recommendation

If using ecstatic 4.x, upgrade to 4.1.2 or later. If using ecstatic 3.x, upgrade to 3.3.2 or later. If using ecstatic 2.x, upgrade to 2.2.2 or later.

ecstatic have a denial of service vulnerability. Successful exploitation could lead to crash of an application.

ecstatic, a simple static file server middleware, is vulnerable to denial of service. If a payload with a large number of null bytes (%00) is provided by an attacker it can crash ecstatic by running it out of memory.

Results from the original advisory

A payload of 22kB caused a lag of 1 second,
A payload of 35kB caused a lag of 3 seconds,
A payload of 86kB caused the server to crash

Recommendation

Update to version 2.0.0 or later.

Versions of ecstatic prior to 1.4.0 are affected by a denial of service vulnerability when certain input strings are sent via the Last-Modified or If-Modified-Since headers.

Parsing certain inputs with new Date() or Date.parse() cases v8 to crash. As ecstatic passes the value of the affected headers into one of these functions, sending certain inputs via one of the headers will cause the server to crash.

Recommendation

Update to version 1.4.0 or later.

Affected versions of mime are vulnerable to regular expression denial of service when a mime lookup is performed on untrusted user input.

Recommendation

Update to version 2.0.3 or later.

All versions of package merge <2.1.1 are vulnerable to Prototype Pollution via _recursiveMerge .

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.

Recommendation

Update to version 1.2.1 or later.