KeePass version 2.12 <= Insecure DLL Hijacking Vulnerability (dwmapi.dll)

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

1. OVERVIEW

The KeePass 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

KeePass Password Safe is a free, open source, light-weight and
easy-to-use password manager for Windows. You can store your passwords
in a highly-encrypted database, which is locked with one master
password or key file.


3. VULNERABILITY DESCRIPTION

The KeePass application passes an insufficiently qualified path in
loading an external library, "dwmapi.dll"
when a user opens its associated file with extensions - "kdbx".


4. VERSIONS AFFECTED

2.12 and lower version family of 2.x


5. PROOF-OF-CONCEPT/EXPLOIT

http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/keepass/poc/movie/
http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/keepass/poc/keepass.exe_2.12_dwmapi.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

Fix version (i.e 2.13) has not been released yet but the latest patch
is available at:
http://keepass.info/filepool/KeePass_100829b.zip


8. VENDOR

Dominik Reichl
http://keepass.info


9. CREDIT

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


10. DISCLOSURE TIME-LINE

08-29-2010: vulnerability discovered
08-29-2010: notified vendor
08-29-2010: patch released
09-01-2010: vulnerability disclosed


11. REFERENCES

Original Advisory URL:
http://core.yehg.net/lab/pr0js/advisories/dll_hijacking/[keepass]_2.12_insecure_dll_hijacking_(dwmapi.dll)
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/


#yehg [09-01-2010]

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