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 an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process.

09/26/24 – ZDI reported the vulnerability to the vendor
09/26/24 – the vendor acknowledged the receipt of the report
01/13/25 - ZDI asked for updates
01/17/25 – ZDI notified the vendor of the intention to publish the case as a  0-day advisory

• 2024-09-26 - Vulnerability reported to vendor
• 2025-03-10 - Coordinated public release of advisory
• 2025-03-10 - Advisory Updated