Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Eaton EASYsoft. 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 E70 files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline.

05/29/20 - ZDI reported the vulnerability to ICS-CERT
08/26/20 - The vendor requested technical clarification
08/27/20 - ZDI provided additional evidence
10/05/20 - ZDI requested a status update
10/08/20 - Eaton requested an extension
10/08/20 - ZDI granted an extension until December
12/10/20 - ZDI notified ICS-CERT of the intention to publish the report as 0-day advisory on 12/15/2020

-- Mitigation:
Given the nature of the vulnerability the only salient mitigation strategy is to restrict interaction with the application.

• 2020-05-29 - Vulnerability reported to vendor
• 2020-12-15 - Coordinated public release of advisory