Vulnerability · Published Feb 18, 2022 · Assigned by zdi

CVE-2021-46586

High 7.8

In plain English

A high-severity out-of-bounds write in MicroStation CONNECT from Bentley. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities).

Severity (CVSS 3.0)7.8High

Exploit odds (30 days)2.1%top 18.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 3DS files. Crafted data in a 3DS file can trigger 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-15380.

Affected products (as reported)

Vendor	Product	Versions
Bentley	MicroStation CONNECT	10.16.0.80

Weakness: CWE-787 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0004 x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-22-173/ x_refsource_MISC