1. OVERVIEW

IBM Lotus Symphony 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

IBM Lotus Symphony Office Suite is an ward-winning office productivity
software from IBM that is easy to use and provided at no charge. It
can help you take back control of your IT budget while giving most
users the tools they need to excel at their jobs. Designed to handle
the tasks that most people perform in a professional setting, IBM
Lotus Symphony tools enable users to create, edit and share word
processing documents, spread- sheets and presentations.


3. VULNERABILITY DESCRIPTION

The IBM Lotus Symphony  Office Suite application passes an
insufficiently qualified path in loading its external library,
"eclipse_1114.dll" when a user opens its associated file with
extensions - odm, odt, otp, stc, stw, sxg, sxw.


4. VERSIONS AFFECTED

version 3 beta 4 and probably lower versions


5. PROOF-OF-CONCEPT/EXPLOIT

http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/ibm_lotus_symphony/poc/movie/lotus_symphony_3-beta-4-dll-hijacking.mp4
http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/ibm_lotus_symphony/poc/lotus_symphony_3-beta-4-dll-hijacking-poc.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

IBM Corporation
http://symphony.lotus.com/
http://www.ibm.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/[ibm_lotus_symphony]_3-beta-4_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]