Vulnerability Details : CVE-2021-34916
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Bentley View 10.15.0.75. 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 DWG files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14894.
Vulnerability category: Execute code
Products affected by CVE-2021-34916
- cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:*
- cpe:2.3:a:bentley:bentley_view:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34916
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34916
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
3.3
|
LOW | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
1.8
|
1.4
|
Zero Day Initiative | |
|
3.3
|
LOW | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
1.8
|
1.4
|
NIST |
CWE ids for CVE-2021-34916
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Primary)
- zdi-disclosures@trendmicro.com (Secondary)
References for CVE-2021-34916
-
https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0010
BE-2021-0010: Out-of-bounds read vulnerabilities in MicroStation and MicroStation-based applicationsVendor Advisory
-
https://www.zerodayinitiative.com/advisories/ZDI-21-1504/
ZDI-21-1504 | Zero Day InitiativeThird Party Advisory;VDB Entry
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