Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 STP 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.

08/03/23 – ZDI reported the vulnerability to the vendor
08/03/23 – The vendor acknowledged the receipt of the report
11/16/23 – ZDI asked for updates
11/16/23 –The vendor communicated that the case was not fixed
12/05/23 – ZDI asked for updates
12/06/23 –The vendor communicated that the case was not fixed
02/28/24 – ZDI notified the vendor of the intention to publish the case as 0-day advisory on 03/04/24

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

• 2023-08-03 - Vulnerability reported to vendor
• 2024-03-05 - Coordinated public release of advisory
• 2024-07-01 - Advisory Updated