JVN#68345747: The installers of multiple CELSYS,Inc. software may insecurely load Dynamic Link Libraries

The installers of multiple software provided by CELSYS,Inc. contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Impact

Arbitrary code may be executed with the privilege of the user invoking the installer.

Solution

Use the latest installer
Use the latest installer according to the information provided by the developer.
Also when executing the installer, be sure to check there are no suspicious files in the directory where the installer resides.

Note that this vulnerability affects the installer only, thus users who have already installed the software do not need to re-install the software.

Products Affected

• CLIP STUDIO PAINT (for Windows) EX/PRO/DEBUT Ver.1.7.3 and earlier
• CLIP STUDIO ACTION (for Windows) Ver.1.5.5 and earlier, with its timestamp prior to April 25, 2018, 12:11:31
• CLIP STUDIO MODELER (for Windows) Ver.1.6.3 and earlier, with its timestamp prior to April 25, 2018, 17:02:49