Advisory Details

June 8th, 2023

Ashlar-Vellum Cobalt Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-23-830
ZDI-CAN-18552

CVE ID CVE-2023-34292
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Ashlar-Vellum
AFFECTED PRODUCTS Cobalt
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 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 before the start of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS

Fixed in 12.0.1204.54


DISCLOSURE TIMELINE
  • 2022-09-06 - Vulnerability reported to vendor
  • 2023-06-08 - Coordinated public release of advisory
CREDIT Anonymous
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