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Date: Mon, 30 Oct 2017 13:15:12 -0300
From: filipe <filipe.xavier@...pest.com.br>
To: fulldisclosure@...lists.org
Subject: [FD] Advisory SyncBreeze Enterprise 10.1.16 Buffer Overflow
 [CVE-2017-15950]

=====[ Tempest Security Intelligence - ADV-10/2017 ]===
 
  Sync Breeze 10.1.16 Buffer Overflow
 
  Author: Filipe Xavier Oliveira

  Tempest Security Intelligence - Recife, Pernambuco - Brazil

=====[ Table of Contents
]=====================================================
 
  * Overview 
  * Detailed description 
  * Aggravating factors     
  * Timeline of disclosure   
  * Thanks & Acknowledgements 
  * References

=====[ Overview
]==============================================================
 
 * System affected  : Sync Breeze Enterprise [1].
 * Software Version : 10.1.16 (other versions may also be affected).
 * Impact           : A user may be affected by opening a malicious
importing command XML file, through a long destination  directory path
or remotely using the passive mode.

=====[ Detailed description
]==================================================

Sync Breeze version 10.1.16 is vulnerable to buffer overflow, which can
be exploited remotely or locally to achieve arbitrary code execution.
The flaw is triggered by providing a long input into the "Destination
directory" path of the application.

The following information regards the state of the CPU and stack at the
moment of the crash:

(cb8.930): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000001 ebx=0010f118 ecx=00000000 edx=0010a1f4 esi=02091c98
edi=0314db50
eip=41414141 esp=0010b20c ebp=0010b264 iopl=0         nv up ei pl nz na
po nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000            
efl=00010202
41414141 ??              ???

STACK_TEXT: 
0010b208 41414141 41414141 41414141 41414141 0x41414141
0010b264 0039bc37 0314db50 02132170 0110b884 0x41414141
0010b88c 6517add6 5d56f800 030f81c8 030f8488
libsbg!SCA_SyncHistoryDlg::qt_metacall+0x6f87
00000000 00000000 00000000 00000000 00000000
QtGui4!QButtonGroup::checkedId+0x6e9

=====[ Aggravating factors
]===================================================

It's possible to trigger the buffer overflow remotely if the user
activates the passive mode. In this case an remote attacker can set a
destination directory and exploit the vulnerability.

=====[ Timeline of disclosure 
]===============================================

10/07/2017 - Vulnerability reported. Vendor did not respond.
10/17/2017 - Tried to contact vendor again, without success.
10/28/2017 - CVE assigned [1]
10/30/2017 - Advisory publication date.

=====[ Thanks & Acknowledgements
]============================================
 
     - Breno Cunha          < brenodario () gmail.com >
    - Henrique Arcoverde < henrique.arcoverde () tempest.com.br
    - Tempest Security Intelligence / Tempest's Pentest Team [3]
 
=====[ References
]===========================================================

[1] http://www.syncbreeze.com/

[2] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15950

[3] http://www.tempest.com.br

=====[ EOF
]====================================================================

-- 
Filipe Oliveira
Tempest Security Intelligence


View attachment "advSyncBreeze.txt" of type "text/plain" (3126 bytes)


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