Vulnerability Description
The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opcfoundation | Ua-Nodeset | < 1.05.01 |
| Siemens | Simatic Net Pc | 14 |
| Siemens | Sitop Manager | - |
| Siemens | Telecontrol Server Basic | 3.0 |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdfPatchThird Party Advisory
- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20PatchVendor Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4kExploitThird Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdfPatchThird Party Advisory
- https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20PatchVendor Advisory
- https://www.youtube.com/watch?v=qv-RBdCaV4kExploitThird Party Advisory
FAQ
What is CVE-2021-45117?
CVE-2021-45117 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.
How severe is CVE-2021-45117?
CVE-2021-45117 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-45117?
Check the references section above for vendor advisories and patch information. Affected products include: Opcfoundation Ua-Nodeset, Siemens Simatic Net Pc, Siemens Sitop Manager, Siemens Telecontrol Server Basic.