Vulnerability Details : CVE-2021-34873
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 PDF files. Crafted data in a PDF 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-14696.
Vulnerability category: Memory CorruptionExecute code
Products affected by CVE-2021-34873
- cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:*
- cpe:2.3:a:bentley:bentley_view:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34873
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-2021-34873
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-2021-34873
-
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-2021-34873
-
https://www.zerodayinitiative.com/advisories/ZDI-21-1460/
ZDI-21-1460 | Zero Day InitiativeThird Party Advisory;VDB Entry
-
https://www.bentley.com/en/common-vulnerability-exposure/BE-2021-0003
BE-2021-0003: Out-of-bounds and use-after-free vulnerabilities in MicroStation and MicroStation-based applicationsVendor Advisory
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