Vulnerability Details : CVE-2021-34934
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. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14912.
Vulnerability category: OverflowMemory CorruptionExecute code
Products affected by CVE-2021-34934
- cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:*
- cpe:2.3:a:bentley:bentley_view:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34934
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-2021-34934
| 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-2021-34934
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by:
- nvd@nist.gov (Primary)
- zdi-disclosures@trendmicro.com (Secondary)
References for CVE-2021-34934
-
https://www.zerodayinitiative.com/advisories/ZDI-21-1522/
ZDI-21-1522 | Zero Day InitiativeThird Party Advisory;VDB Entry
-
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
Jump to