(0Day) Ashlar-Vellum Cobalt IGS File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability

June 15th, 2023

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 IGS files. The issue results from the lack of proper validation of user-supplied data, which can result in a read 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

02/14/23 – ZDI reported the vulnerability to the vendor.

02/16/23 – The vendor acknowledged the report.

06/07/23 – The ZDI asked for an update.

06/08/23 – The vendor states that the vulnerability would be fixed in a future build.

06/08/23 – The ZDI informed the vendor that the case will be published as a zero-day advisory on 06/15/23.   

-- Mitigation: Fixed in version 12.6.1204.217


Disclosure Timeline

  • 2023-02-14 - Vulnerability reported to vendor
  • 2023-06-15 - Coordinated public release of advisory
  • 2026-06-18 - Advisory Updated

Credit

rgod

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