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JetBrains PyCharm Professional 2016.1.4 DLL Hijacking

JetBrains PyCharm Professional 2016.1.4 DLL Hijacking
Posted Jul 8, 2016
Authored by Himanshu Mehta

JetBrains PyCharm Professional 2016.1.4 suffers from a dll hijacking vulnerability.

tags | exploit
systems | windows
SHA-256 | 4de033441e6b4df81c97cd3b729affb56fee1855258011c7cd76abc5f6de3272

JetBrains PyCharm Professional 2016.1.4 DLL Hijacking

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Aloha,

*pycharm-professional-2016.1.4.exe* loads and executes dwmapi.dll from its
"application directory".

For software downloaded with a web browser the applicationdirectory is
typically the user's "Downloads" directory: see <
https://insights.sei.cmu.edu/cert/2008/09/carpet-bombing-and-directory-poisoning.html
>,
<http://blog.acrossecurity.com/2012/02/downloads-folder-binary-planting.html
>
and <http://seclists.org/fulldisclosure/2012/Aug/134> for "prior art" about
this well-known and well-documented vulnerability.


If an attacker places one of the above named DLL in the user's "Downloads"
directory (for example per "drive-by download" or "social engineering")
this vulnerability becomes a remote code execution.


Proof of concept/demonstration:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. Create malicious dll file and save it as dwmapi.dll in your "Downloads"
directory.

2. Download pycharm-professional-2016.1.4.exe from
https://www.jetbrains.com/pycharm/download/#section=windows
and save it in your "Downloads" directory.

3. Execute pycharm-professional-2016.1.4.exe from your "Downloads"
directory.

4. Malicious dll file gets executed.

Chao!!
Himanshu Mehta
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