CVE-2023-52891 Denial of service in SIMATIC Energy Manager Basic
Attackers can cause high load and memory exhaustion in Siemens OPC UA servers, blocking service availability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-52891?
CVE-2023-52891 is a medium-severity denial of service vulnerability in Siemens SIMATIC Energy Manager Basic, published on 9 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC Energy Manager Basic (All versions < V7.5), SIMATIC Energy Manager PRO (All versions < V7.5), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMIT V10 (All versions), SIMIT V11 (All versions < V11.1). Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in Siemens products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the server.
Weakness: CWE-1325
Which versions are affected by CVE-2023-52891?
How do I fix CVE-2023-52891?
No fix has been published for CVE-2023-52891 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-52891 being exploited?
There is no known exploitation of CVE-2023-52891 in the wild and no public exploit code.
Sources
Also known as GHSA-gccj-rgh5-5x96.