Advisory Details

April 12th, 2022

Bentley MicroStation CONNECT OBJ File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-22-593
ZDI-CAN-16172

CVE ID CVE-2022-28305
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Bentley
AFFECTED PRODUCTS MicroStation CONNECT
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT. 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 OBJ files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Bentley has issued an update to correct this vulnerability. More details can be found at:
https://www.bentley.com/en/common-vulnerability-exposure/be-2022-0008
DISCLOSURE TIMELINE
  • 2022-01-14 - Vulnerability reported to vendor
  • 2022-04-12 - Coordinated public release of advisory
CREDIT Anonymous
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