Vulnerability Details : CVE-2023-27321
OPC Foundation UA .NET Standard ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20505.
Vulnerability category: Denial of service
Products affected by CVE-2023-27321
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Exploit prediction scoring system (EPSS) score for CVE-2023-27321
0.44%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-27321
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
Zero Day Initiative | 2024-05-08 |
CWE ids for CVE-2023-27321
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: zdi-disclosures@trendmicro.com (Secondary)
References for CVE-2023-27321
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