BugTraq
HP ToComMsg DLL side loading vulnerability Jan 23 2016 09:12AM
Securify B.V. (lists securify nl)
------------------------------------------------------------------------

HP ToComMsg DLL side loading vulnerability
------------------------------------------------------------------------

Yorick Koster, September 2015

------------------------------------------------------------------------

Abstract
------------------------------------------------------------------------

A DLL side loading vulnerability was found in the HP ToComMsg DLL. This
issue can be exploited by loading the TcComMsg.AutoTcComMsg object as an
embedded OLE object. When instantiating the object Windows will try to
load the DLL MFC80ENU.DLL from the current working directory. If an
attacker convinces the user to open a specially crafted (Office)
document from a directory also containing the attacker's DLL file, it is
possible to execute arbitrary code with the privileges of the target
user. This can potentially result in the attacker taking complete
control of the affected system.

------------------------------------------------------------------------

Tested versions
------------------------------------------------------------------------

This issue was successfully verified on the HP Color LaserJet CM2320 MFP
drivers version 3.1 (CM2320series-win7-full-solution-AM-EMEA1-v3.1.exe).

------------------------------------------------------------------------

Fix
------------------------------------------------------------------------

There is currently no fix available, HP reports: "Unfortunately, the
driver software for these devices can no longer be updated. The devices
have ended support life and the engineering resources are no longer
available to provide any firmware updates. We do understand the issue,
and current drivers are no longer vulnerable to the OLE side load
issue".

------------------------------------------------------------------------

Details
------------------------------------------------------------------------

https://www.securify.nl/advisory/SFY20150902/hp_tocommsg_dll_side_loadin
g_vulnerability.html
https://www.securify.nl/exploit/SFY20150901/hp_laserjet_ole_sideload.htm
l
https://www.securify.nl/blog/SFY20151201/there_s_a_party_in_ole__and_you
_are_invited.html

[ reply ]


 

Privacy Statement
Copyright 2010, SecurityFocus