JVN#27256219: RevoWorks incomplete filtering of MS Office v4 macros

RevoWorks SCVX, RevoWorks Browser and RevoWorks Desktop provided by J’s Communication Co., Ltd. enables users to execute web browsers, accessing drives, folders, files and registries in a sandboxed environment. Users can download files from the internet to the sandboxed environment, sanitizing through “File Sanitization Library” or “File Sanitization Option”, and import to the local environment.
“File Sanitization Library” and “File Sanitization Option” are implemented with some third-party component, but the component’s filtering functionality is incomplete, fails to detect nor remove Microsoft Excel 4.0 (XLM) Macros (CWE-791).

Impact

When downloading and importing a file to the local environment and open it, some malicious macros may be executed.

Solution

Update the Software
Update the product according to the information provided by the developer.

The developer provides the following fixed versions:

• RevoWorks SCVX using “File Sanitization Library” 1.044 and later
• RevoWorks Browser 2.2.69 and later
• RevoWorks Desktop 2.1.85 and later

Products Affected

• RevoWorks SCVX using “File Sanitization Library” 1.043 and prior versions
• RevoWorks Browser 2.2.67 and prior versions (when using “File Sanitization Option”)
• RevoWorks Desktop 2.1.84 and prior versions (when using “File Sanitization Option”)