CVE Vulnerability

CVE-2021-45117

The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf Patch Vendor Advisory
https://www.youtube.com/watch?v=qv-RBdCaV4k Exploit Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:opcfoundation:ua-nodeset:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_net_pc:16:-:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_net_pc:15:-:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_net_pc:14:-:*:*:*:*:*:*
cpe:2.3:a:siemens:sitop_manager:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:telecontrol_server_basic:3.0:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_net_pc:17:-:*:*:*:*:*:*
Information

Published : 2022-03-21 03:15

Updated : 2022-09-03 03:55

NVD link : CVE-2021-45117

Mitre link : CVE-2021-45117

Products Affected
No products.
CWE
CWE-476