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.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

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

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

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

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Configurations

Configuration 1 (hide)

cpe:2.3:a:opcfoundation:ua-nodeset:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	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 08:15

Updated : 2022-09-02 20:55

NVD link : CVE-2021-45117

Mitre link : CVE-2021-45117

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

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Products Affected

siemens

simatic_net_pc
telecontrol_server_basic
sitop_manager

opcfoundation

ua-nodeset

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