Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Wecon LeviStudioU. 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 TIFF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, heap-based buffer. An attacker can leverage this vulnerability to execute code under the context of the Administrator.

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

05/18/18 - ZDI disclosed the reports to ICS-CERT
07/06/18 - ZDI inquired about the status of the reports
09/19/18 - ZDI notified ICS-CERT of the intent to 0-day these on 9/26

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

• 2018-05-18 - Vulnerability reported to vendor
• 2018-09-26 - Coordinated public release of advisory
• 2018-09-26 - Advisory Updated