Ashlar-Vellum Cobalt Out-Of-Bounds Write Remote Code Execution Vulnerability. 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 X_B or X_T 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. Was ZDI-CAN-18636.

Zero Day Initiative AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Zero Day Initiative CWE-787

Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-23-831/ [No types assigned]