JVN#57073973: "JustSystems JUST Online Update for J-License" starts a program with an unquoted file path

“JustSystems JUST Online Update for J-License” is bundled with multiple products for corporate users provided by JustSystems Corporation, as in Ichitaro through Pro5 and others, and it is registered as a Windows service.
“JustSystems JUST Online Update for J-License” starts another program with an unquoted file path (CWE-428).

Impact

A malicious file may be executed with the privilege of the Windows service.

Solution

Update the software
Update the software to the latest version according to the information provided by the developer.

Products Affected

“JustSystems JUST Online Update for J-License” (for corporate users) is affected.
For more information, refer to the information provided by the developer.