E-Press ONE Office Suite <= Insecure DLL Hijacking Vulnerability

[YGN Ethical Hacker Group <lists () yehg net>]

1. OVERVIEW

E-Press ONE Office Suite application is vulnerable to Insecure DLL
Hijacking Vulnerability. Similar terms that describe this
vulnerability have been come up with Remote Binary Planting, and
Insecure DLL Loading/Injection/Hijacking/Preloading.


2. PRODUCT DESCRIPTION

E-Press ONE Office Suite is a multi-title suite of applications that
includes everything you need to get you up and running. From standard
office applications such as spreadsheet and presentation software, all
fully compatible with Microsoft, to digital media and web creation, PC
Defender Antivirus(a port of ClamAV),  ONE is the single most
comprehensive suite of products available today for your productivity
needs.


3. VULNERABILITY DESCRIPTION

The E-Press ONE Office Suite  applications pass an insufficiently
qualified path in loading their external libraries when a user opens
its associated file with extensions.
        
 E-Press ONE Office Author
        - affected dlls: java_msci.dll, msci_java.dll
        - affected extention: psw

 E-Press ONE Office E-NoteTakeer
        - affected dlls: mfc71enu.dll, mfc71loc.dll
        - affected extention: txt

 E-Press ONE Office E-Zip
        - affected dll: mfc71enu.dll, mfc71loc.dll
        - affected extentions: rar, tar


4. VERSIONS AFFECTED

N/A (Application's last modified date was found to be March, 2006)


5. PROOF-OF-CONCEPT/EXPLOIT

http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/e-press-one_office-suite/poc/movie/e-press-one_office-suite-dll-hijacking.mp4
http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/e-press-one_office-suite/poc/e-press-one_office_suite-poc-dll.zip

Tested Platform: Windows XP Service Pack 3 (Fresh Windows)


6. IMPACT

Attackers can trigger a successful exploit against a victim user in a
number of ways such as placing a malicious external
library file made as hidden attribute and a seemingly interesting file
in network shares, usb drives, file sharing networks,
social networks, ..etc  


7. SOLUTION

Fixed version from the vendor has not been released yet.
However, it is suggested that the following workarounds be deployed by
users to protect increasing mass exploitation of this
vulnerability class:
- Disable loading of libraries from WebDAV and remote network shares
- Disable the WebClient service
Please see workaround solution links in References section.


8. VENDOR

E-PRESS Corp.
http://www.e-press.com


9. CREDIT

This vulnerability was discovered by Aung Khant, http://yehg.net, YGN
Ethical Hacker Group, Myanmar.


10. DISCLOSURE TIME-LINE

09-11-2010: notified vendor
09-13-2010: vulnerability disclosed


11. REFERENCES

Original Advisory URL:
http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/[e-press-one_office]_insecure_dll_hijacking
Workaround Solution: http://support.microsoft.com/kb/2264107
Workaround Solution:
https://www.microsoft.com/technet/security/advisory/2269637.mspx#EGF
Developer Solution:
http://msdn.microsoft.com/en-us/library/ff919712%28v=VS.85%29.aspx
Unofficial DLL Hijacking List:
http://www.corelan.be:8800/index.php/2010/08/25/dll-hijacking-kb-2269637-the-unofficial-list/
Testing for DLL Hijacking:
http://core.yehg.net/lab/pr0js/view.php/when_testing_for_dll_hijacking.txt

#yehg [09-13-2010]

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