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CVE-2022-28305: BE-2022-0008 | Bentley Systems | Infrastructure Engineering Software Company

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.02.034. 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. Was ZDI-CAN-16172.

CVE
#vulnerability#zero_day

BE-2022-0008: OBJ File Parsing Stack Overflow vulnerabilities in MicroStation and MicroStation-based applications

Bentley ID: BE-2022-0008
CVE ID: CVE-2022-28304, CVE-2022-28305, CVE-2022-28306
Severity: 7.8
CVSS v3.1: AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Publication date: 2022-04-05
Revision date: 2022-04-05

**Summary
**MicroStation and MicroStation-based applications may be affected by stack overflow vulnerabilities when opening maliciously crafted OBJ files. Exploiting these vulnerabilities could lead to code execution.

**Details
**The following vulnerabilities related to this advisory were discovered by TrendMicro ZDI: ZDI-CAN-16171, ZDI-CAN-16172 and ZDI-CAN-16174. Using an affected version of MicroStation or MicroStation-based application to open a OBJ file containing maliciously crafted data can force stack overflows. Exploitation of these vulnerabilities within the parsing of OBJ files could enable an attacker to execute arbitrary code in the context of the current process.

Affected Versions

Applications

Affected Versions

Mitigated Versions

MicroStation

10.16.02.* and prior versions

10.16.03.* and more recent

Bentley View

10.16.02.* and prior versions

10.16.03.* and more recent

**Recommended Mitigations
**Bentley recommends updating to the latest versions of MicroStation and MicroStation-based applications. As a general best practice, it is also recommended to only open OBJ files coming from trusted sources.

**Acknowledgement
**Thanks to Anonymous working with Trend Micro Zero Day Initiative for finding these vulnerabilities.

Revision History

Date

Description

2022-04-05

First version of this advisory

Related news

CVE-2022-28304: ZDI-22-594

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.02.034. 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. Was ZDI-CAN-16171.

CVE-2022-28306: ZDI-22-595

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.02.034. 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 to execute code in the context of the current process. Was ZDI-CAN-16174.

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