CVE-2023-27336 Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability
Remote attackers can cause a denial-of-service condition in Softing edgeConnector Siemens by exploiting a null pointer dereference in certificate handling without authentication.
- 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-2023-27336?
CVE-2023-27336 is a high-severity vulnerability in Softing edgeConnector Siemens, published on 3 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference 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 client certificates. The issue results from dereferencing a NULL pointer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20508.
Weakness: CWE-476
Which versions are affected by CVE-2023-27336?
It affects 3 products.
Products include Softing Edgeaggregator, Softing Edgeconnector, Softing Secure Integration Server.
How do I fix CVE-2023-27336?
No fix has been published for CVE-2023-27336 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-27336 being exploited?
There is no known exploitation of CVE-2023-27336 in the wild and no public exploit code.
Other vulnerabilities in Softing edgeConnector Siemens
- CVE-2022-2336 Softing Secure Integration Server Improper Authentication
- CVE-2023-27335 Softing edgeAggregator Client Cross-Site Scripting Remote Code Execution Vulnerability
- CVE-2024-0860 Cleartext Transmission of Sensitive Information in Softing edgeConnector and edgeAggregator
- CVE-2023-27334 Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability
- CVE-2023-38125 Softing edgeAggregator Permissive Cross-domain Policy with Untrusted Domains Remote Code Execution Vulnerability
Sources
Also known as GHSA-v94g-ggp4-7f34.