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] _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/