Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fuji Electric Alpha5 Smart. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of C5V files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

07/06/23 - ZDI reported the vulnerability to ICS-CERT
07/11/23 - ICS-CERT acknowledged the receipt of the report
11/17/23 - ZDI asked for updates
11/20/23 - The vendor communicated that the fix would be ready in 03/31/2024
02/15/24 - ICS-CERT asked the vendor for updates
02/23/24 -The vendor communicated that there will be no fix for the issue and the users should migrate to the Alpha7 units
05/16/24 - ZDI notified the vendor of the intention to publish the case as 0-day advisory on 05/30/24

-- Mitigation: The vendor's recommended path is to migrate to the Alpha7 units.
https://www.fujielectric.com/products/drives_inverters/servo/product_series/alpha7_overview.html

• 2023-07-10 - Vulnerability reported to vendor
• 2024-05-31 - Coordinated public release of advisory
• 2024-07-01 - Advisory Updated