Vulnerability Details : CVE-2021-34928
This vulnerability allows remote attackers to execute arbitrary code 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 JT files. Crafted data in a JT 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-14906.
Vulnerability category: Memory CorruptionExecute code
Products affected by CVE-2021-34928
- cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:*
- cpe:2.3:a:bentley:bentley_view:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34928
0.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34928
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
Zero Day Initiative | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2021-34928
-
The product writes 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-2021-34928
-
https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0005
BE-2021-0005: Out-of-bounds and use-after-free vulnerabilities in MicroStation and MicroStation-based applicationsVendor Advisory
-
https://www.zerodayinitiative.com/advisories/ZDI-21-1516/
ZDI-21-1516 | Zero Day InitiativeThird Party Advisory;VDB Entry
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