Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-27334Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability

High 7.5

In plain English

A high-severity uncontrolled resource consumption in edgeConnector Siemens from Softing. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities).

Severity (CVSS 3.0)7.5High

Exploit odds (30 days)1.4%top 26.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. 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-20498.

Affected products (as reported)

Vendor	Product	Versions
Softing	edgeConnector Siemens	3.40

Weakness: CWE-400 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ZDI-23-1054 x_research-advisory
vendor-provided URL vendor-advisory