719296 - Malicious "YouTube Player" add-on

Status: RESOLVED FIXED

(Toolkit :: Blocklist Policy Requests, defect)

Description

[MarkH]

Attachment: youtube_player.xpi

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.75 Safari/535.7

Steps to reproduce:

User's on Facebook are being encouraged to click on a link to http://wurm.yuovideo.info/video3.php

This redirects to youutuube.info with a fake video, asking the user to click on it to upgrade their video player

Clicking with push one of two malicious browser extensions:

(Firefox) http://p.nicefb.me/player/ff/youtube_player.xpi
(Chrome) http://p.nicefb.me/player/ff/youtube_player.crx




Actual results:

From the Firefox .xpi file, the "ff-overlay.js" file:

if on yuotube.info, redir to http://yuotube.info/video.php

if on facebook.com, do

grab post_form_id, fb_dtsg from DOM
grab c_user cookie

pick a message at random from one of the following:

msg[0]=" das wirst du niemals glauben, die Frau hat echt nen Wurm im Kopf";       
msg[1]=", Gott die Frau hat einen Wurm im Kopf";
msg[2]=" zieh dir das video rein";
msg[3]=" die meisten können das video nicht bis zum ende ansehen, du denn";
msg[4]=" sowas hast du noch nicht gesehen. schau es dir an";
msg[5]=" das ist echt unglaublich!";
msg[6]=" das schrecklichste video ever";
msg[7]=" oh mein Gott...";
msg[8]=" einfach nur krass";
msg[9]=" diese Frau hat echt einen Wurm im Kopf ... Unglaublich";
msg[10]=" no comment";
msg[11]=" ich sag dir, du wirst kotzen";

Post to /ajax/pages/fan_status.php?__a=1 (http + https)
to be a fan of 193608230734197 ("We love Amazon" page)

goes through the buddy list, extracts online friends
and then sends to each one via /ajax/sharer/submit/?__a=1 
a link to 271819969526779 (a deleted page for a spammy video)

Posts to all friends' walls:
/ajax/sharer/submit/?__a=1
a link to 271819969526779 (a deleted page for a spammy video)


Expected results:

It shouldn't steal Facebook data from cookies and the DOM, to then send messages to Facebook users via the user's account.

Comment 1

[Jorge Villalobos [:jorgev] (he/him)]

Id: ff-ext@youtube

Comment 2

[Jorge Villalobos [:jorgev] (he/him)]

Blocked.

Comment 3

[Jorge Villalobos [:jorgev] (he/him)]

Here it is: https://addons.mozilla.org/en-US/firefox/blocked/i52

Comment 4

[Justin Scott [:fligtar]]

Please file these bugs in Blocklisting component in the future.