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 XE 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.

08/16/24 – ZDI reported the vulnerability to the vendor
08/16/24 – the vendor acknowledged the receipt of the report
09/11/24 - ZDI asked for updates
12/16/24 - ZDI notified the vendor of the intention to publish the case as a 0-day advisory

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

• 2024-08-16 - Vulnerability reported to vendor
• 2024-12-30 - Coordinated public release of advisory
• 2024-12-30 - Advisory Updated