Advisory Details

November 10th, 2021

Open Design Alliance (ODA) ODAViewer DGN File Parsing Use-After-Free Remote Code Execution Vulnerability

ZDI-21-1284
ZDI-CAN-14314

CVE ID CVE-2021-43275
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Open Design Alliance (ODA)
AFFECTED PRODUCTS ODAViewer
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Open Design Alliance (ODA) ODAViewer. 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 DGN files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Open Design Alliance (ODA) has issued an update to correct this vulnerability. More details can be found at:
https://www.opendesign.com/security-advisories
DISCLOSURE TIMELINE
  • 2021-07-02 - Vulnerability reported to vendor
  • 2021-11-10 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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