JetBrains PyCharm Professional 2016.1.4 DLL Hijacking

2016.07.09
Risk: Medium
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

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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