JVN#04564808: Installer of ”FLET'S Azukeru Backup Tool” may insecurely load Dynamic Link Libraries

“FLET’S Azukeru Backup Tool” provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION is software to automatically back up files in the user’s computer to “FLET’S Azukeru” service. Installer of “FLET’S Azukeru Backup Tool” contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries.

Impact

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

Solution

Use the latest installer
This vulnerability has been already addressed in the latest version（ver.1.5.2.7）released in 2017 May 11.
When installing “FLET’S Azukeru Backup Tool”, use the latest installer according to the information provided by the developer.
If the old version of “FLET’S Azukeru Backup Tool” obtained from the website before 2017 May 11 resides in your computer, delete it immediately.

Note that this vulnerability affects the installer only, thus users who have already installed “FLET’S Azukeru Backup Tool” do not need to re-install the software using the latest installer.

For details, refer to the information provided by the developer.

Products Affected

• “FLET’S Azukeru Backup Tool” version 1.5.2.6 and earlier