(0Day) Ashlar-Vellum Cobalt XE File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Vulnerability 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 write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
Additional Details
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
Disclosure Timeline
- 2024-08-16 - Vulnerability reported to vendor
- 2024-12-30 - Coordinated public release of advisory
- 2024-12-30 - Advisory Updated
Credit
Andrea Micalizzi aka rgod (@rgod777)
