Document Title:
===============
BitDefender IS2011 - FV Buffer Overflow Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=147


Release Date:
=============
2011-08-29


Vulnerability Laboratory ID (VL-ID):
====================================
147


Product & Service Introduction:
===============================
BitDefender Internet Security 2010 schützt die Online-Aktivitäten Ihrer Familie -ohne die PCs auszubremsen. 
Es versperrt Viren, Hackern und Spam den Zutritt und bietet Schutz durch Kindersicherung und Firewall.

(Copy of the Vendor Homepage: http://www.bitdefender.com/)


Abstract Advisory Information:
==============================
Vulnerability-Lab Team discovered a Buffer Overflow Vulnerability on BitDefender Total Internet Security 2011.


Vulnerability Disclosure Timeline:
==================================
2011-08-30:	Public or Non-Public Disclosure


Discovery Status:
=================
Published


Affected Product(s):
====================

Exploitation Technique:
=======================
Local


Severity Level:
===============
Medium


Technical Details & Description:
================================
Attackers can crash the bdfvcl.exe together with the software bitdefender 2011 by generating special crafted file-vault containers. The vulnerability 
is detected on the  file fault encryption module name mask. Successfull exploitation of the bug can result in software or file-fault module 
shutdown via unhandled buffer overflow.

Vulnerable Module(s): 
			                       [+] File Storage => Create File Vault (File Vault Name)


--- Exception Logs ---
(970.460): Unknown exception - code c0000417  | BEX64


--- Report Logs ---
Version=1
EventType=BEX64
EventTime=129217836360862428
ReportType=2
Consent=1
UploadTime=129217836365852617
ReportIdentifier=4091e150-7ee3-11df-83ae-b62be8e4cad8
IntegratorReportIdentifier=4091e14f-7ee3-11df-83ae-b62be8e4cad8
Response.type=4
Sig[0].Name=Anwendungsname
Sig[0].Value=bdfvcl.exe
Sig[1].Name=Anwendungsversion
Sig[1].Value=14.0.19.71
Sig[2].Name=Anwendungszeitstempel
Sig[2].Value=4c1a1eeb


--- Wer Report Logs ---
  <?xml version= 1.0 encoding= UTF-16 ?> 
- <WERReportMetadata>
- <OSVersionInformation>
  <WindowsNTVersion>6.1</WindowsNTVersion> 
  <Build>7600</Build> 
  <Product>(0x3): Windows 7 Home Premium</Product> 
  <Edition>HomePremium</Edition> 
  <BuildString>7600.16539.amd64fre.win7_gdr.100226-1909</BuildString> 
  <Revision>1</Revision> 
  <Flavor>Multiprocessor Free</Flavor> 
  <Architecture>X64</Architecture> 
  <LCID>1031</LCID> 
  </OSVersionInformation>
- <ParentProcessInformation>
  <ParentProcessId>4940</ParentProcessId> 
  <ParentProcessPath>C: Program Files  BitDefender  BitDefender 2011 - Beta/seccenter.exe</ParentProcessPath> 
  <ParentProcessCmdLine> C:/Program Files/BitDefender/BitDefender 2011 - Beta/seccenter.exe/</ParentProcessCmdLine> 
  </ParentProcessInformation>
- <ProblemSignatures>
  <EventType>BEX64</EventType>                 
  <Parameter0>bdfvcl.exe</Parameter0> 
  <Parameter1>14.0.19.71</Parameter1> 
  <Parameter2>4c1a1eeb</Parameter2> 
  <Parameter4>9.0.30729.4926</Parameter4> 
  <Parameter5>4a1750b0</Parameter5> 
  <Parameter6>0000000000054fc0</Parameter6> 
  <Parameter7>c0000417</Parameter7> 
  <Parameter8>0000000000000000</Parameter8> 
  </ProblemSignatures>
- <DynamicSignatures>
  <Parameter1>6.1.7600.2.0.0.768.3</Parameter1> 
  <Parameter2>1031</Parameter2> 
  <Parameter22>ec59</Parameter22> 
  <Parameter23>ec59a40c7166d65eeb69745785cf1e07</Parameter23> 
  <Parameter24>f06a</Parameter24> 
  <Parameter25>f06ab51246c5838ec5d039447d5efea2</Parameter25> 
  </DynamicSignatures>
- <SystemInformation>
  <MID>5F7D31A6-481E-4ECA-AA14-867905CAD689</MID> 
  <MarkerFile>1025_Acer_Acer_Aspire 5738</MarkerFile> 
  <SystemManufacturer>Acer</SystemManufacturer> 
  <SystemProductName>Aspire 5738</SystemProductName> 
  <BIOSVersion>V1.18</BIOSVersion> 
  </SystemInformation>
  </WERReportMetadata>

Reports:

		../Analyses/BEX64-Appcrash-Vista-XP
		../Analyses/event_log.txt
		../Analyses/DMP/Mini012110-01.dmp


		../Analyses/BEX64-Appcrash-Windows7/Debug/Debug-log.txt
		../Analyses/BEX64-Appcrash-Windows7/DMP/WER128A.tmp.hdmp
		../Analyses/BEX64-Appcrash-Windows7/DMP/WER96E4.tmp.WERInternalMetadata.xml.txt
		../Analyses/BEX64-Appcrash-Windows7/DMP/WER1151.tmp.appcompat.txt
		../Analyses/BEX64-Appcrash-Windows7/Crash Reports/AppCrash_bdfvcl.exe_c8126bc070dce08b638651451ee988a22a0e62a_0c865994
		../Analyses/BEX64-Appcrash-Windows7/Crash Reports/AppCrash_bdfvcl.exe_c8126bc070dce08b638651451ee988a22a0e62a_01e22cfc
		../Analyses/BEX64-Appcrash-Windows7/Crash Reports/AppCrash_bdfvcl.exe_c8126bc070dce08b638651451ee988a22a0e62a_1cea0fc0
		../Analyses/BEX64-Appcrash-Windows7/Crash Reports/AppCrash_bdfvcl.exe_c8126bc070dce08b638651451ee988a22a0e62a_02ea965d
		../Analyses/BEX64-Appcrash-Windows7/Crash Reports/AppCrash_bdfvcl.exe_c8126bc070dce08b638651451ee988a22a0e62a_17f2fd49
		../Analyses/BEX64-Appcrash-Windows7/Crash Reports/AppCrash_bdfvcl.exe_c8126bc070dce08b638651451ee988a22a0e62a_1778d049

Pictures:
			../win7-1.png
			../win-7-2.png
			../win7-3.png
			../win7-4.png
			../winXP-1.png


Note: The bug does not allow to overwrite registers like eip or ebx & the execution of code is not possible.


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by local attackers. For demonstration & reproduce ...

PoC Video:		http://www.vulnerability-lab.com/get_content.php?id=292


Security Risk:
==============
The security risk of the local buffer overflow vulnerability are estimated as medium(-).


Credits & Authors:
==================
Vulnerability Research Laboratory


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=========================
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