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Nuance PDF Reader version 6.0<= Insecure DLL Hijacking Vulnerability (dwmapi.dll, exceptiondumpdll.dll)
From: YGN Ethical Hacker Group <lists () yehg net>
Date: Mon, 13 Sep 2010 03:16:09 +0800
The Nuance PDF Reader 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
The free Nuance PDF Reader is an alternative to Adobe Reader that is
smaller, more secure, and for the first time connects desktop PDF with
cloud-based PDF-to-Microsoft Office conversion services. The Nuance
PDF Reader also enables PDF form save, annotations and Microsoft
SharePoint features not available in alternatives.
3. VULNERABILITY DESCRIPTION
The Nuance PDF Reader application passes an insufficiently qualified
path in loading its external libraries -
"dwmapi.dll, exceptiondumpdll.dll" when a user opens its associated
file with extension - pdf .
4. VERSIONS AFFECTED
6.0 and probably lower versions
Tested Platform: Windows XP Service Pack 3 (Fresh Windows)
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
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
- Disable loading of libraries from WebDAV and remote network shares
- Disable the WebClient service
Please see workaround solution links in References section.
This vulnerability was discovered by Aung Khant, http://yehg.net, YGN
Ethical Hacker Group, Myanmar.
10. DISCLOSURE TIME-LINE
09-07-2010: notified vendor
09-13-2010: vulnerability disclosed
Original Advisory URL:
Workaround Solution: http://support.microsoft.com/kb/2264107
Unofficial DLL Hijacking List:
Testing for DLL Hijacking:
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- Nuance PDF Reader version 6.0<= Insecure DLL Hijacking Vulnerability (dwmapi.dll, exceptiondumpdll.dll) YGN Ethical Hacker Group (Sep 12)