what you don't know can hurt you

Malwarebytes 2.2.0.1024 DLL Hijacking

Malwarebytes 2.2.0.1024 DLL Hijacking
Posted Mar 7, 2016
Authored by Stefan Kanthak

Malwarebytes setup installer for version 2.2.0.1024 suffers from a DLL hijacking vulnerability.

tags | exploit
systems | windows
MD5 | 083123885250862107321a21976b41ce

Malwarebytes 2.2.0.1024 DLL Hijacking

Change Mirror Download
Hi @ll,

Malwarebytes executable installers mbam-setup-2.2.0.1024.exe
and mbae-setup-1.08.1.1189.exe (available from
<https://downloads.malwarebytes.org/file/mbam_current/> and
<https://downloads.malwarebytes.org/file/mbae_current/>) load
and execute UXTheme.dll and DWMAPI.dll from their "application
directory".

For software downloaded with a web browser the application
directory is typically the user's "Downloads" directory: see
<https://insights.sei.cmu.edu/cert/2008/09/carpet-bombing-and-directory-poisoning.html>,
<http://blog.acrossecurity.com/2012/02/downloads-folder-binary-planting.html>
and <http://seclists.org/fulldisclosure/2012/Aug/134>


If an attacker places UXTheme.dll and/or DWMAPI.dll in the user's
"Downloads" directory, for example per "drive-by download" or
"social engineering", this vulnerability becomes a remote code
execution.

Due to the application manifest embedded in the executables which
specifies "requireAdministrator" the executable installers are run
with administrative privileges ("protected" administrators are
prompted for consent, unprivileged standard users are prompted for
an administrator password); execution of the DLLs therefore results
in an escalation of privilege!


Proof of concept/demonstration:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. visit <http://home.arcor.de/skanthak/sentinel.html>, download
<http://home.arcor.de/skanthak/download/SENTINEL.DLL>, save it
as UXTheme.dll in your "Downloads" directory, then copy it as
DWMAPI.dll;

2. download mbam-setup-2.2.0.1024.exe and mbae-setup-1.08.1.1189.exe
and save them in your "Downloads" directory;

3. execute mbam-setup-2.2.0.1024.exe and mbae-setup-1.08.1.1189.exe
from your "Downloads" directory;

4. notice the message boxes displayed from the DLLs placed in step 1.

PWNED!


See <http://seclists.org/fulldisclosure/2015/Nov/101>,
<http://seclists.org/fulldisclosure/2015/Dec/86> and
http://seclists.org/fulldisclosure/2015/Dec/33 plus
<http://home.arcor.de/skanthak/!execute.html> and
<http://home.arcor.de/skanthak/sentinel.html> for details about
this well-known and well-documented BEGINNER'S error!


regards
Stefan Kanthak


PS: I really LOVE (security) software with such trivial beginner's
errors. It's a tell-tale sign to stay away from this snakeoil!


Timeline:
~~~~~~~~~

2015-12-25 sent report regarding MBAM to vendor

2015-12-25 automatic reply from vendor:
"We have received your request and an agent will respond
to your ticket in the order in which it was received."

2016-01-03 reply from vendor:
"We'll take this into consideration for a near-future
installer revamp."

2016-02-02 requested status update

NO REPLY, not even an acknowledgement of receipt

2016-02-02 sent notice to Marcin Kleczynski after his public
announcement of a bug bounty program

2016-02-02 reply from Marcin Kleczynski:
"I'm copying Pedro Bustamante who organizes our bug
bounty program to take a look."

NO reply from Pedro Bustamante et.al.

2016-02-12 sent report regarding MBAE to vendor

NO REPLY, not even an acknowledgement of receipt

2016-02-22 resent report regarding MBAE to vendor

NO REPLY, not even an acknowledgement of receipt

2016-03-06 report published in accordance with my disclosure
policy <http://home.arcor.de/skanthak/policy.html>
Login or Register to add favorites

File Archive:

May 2021

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    1 Files
  • 2
    May 2nd
    4 Files
  • 3
    May 3rd
    27 Files
  • 4
    May 4th
    17 Files
  • 5
    May 5th
    3 Files
  • 6
    May 6th
    32 Files
  • 7
    May 7th
    0 Files
  • 8
    May 8th
    0 Files
  • 9
    May 9th
    0 Files
  • 10
    May 10th
    0 Files
  • 11
    May 11th
    0 Files
  • 12
    May 12th
    0 Files
  • 13
    May 13th
    0 Files
  • 14
    May 14th
    0 Files
  • 15
    May 15th
    0 Files
  • 16
    May 16th
    0 Files
  • 17
    May 17th
    0 Files
  • 18
    May 18th
    0 Files
  • 19
    May 19th
    0 Files
  • 20
    May 20th
    0 Files
  • 21
    May 21st
    0 Files
  • 22
    May 22nd
    0 Files
  • 23
    May 23rd
    0 Files
  • 24
    May 24th
    0 Files
  • 25
    May 25th
    0 Files
  • 26
    May 26th
    0 Files
  • 27
    May 27th
    0 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close