NULL pointer dereference in UA-Nodeset - CVE-2021-45117

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Main Vulnerability Database Vulnerabilities #VU63304

NULL pointer dereference in UA-Nodeset - CVE-2021-45117

Published: May 17, 2022


Vulnerability identifier: #VU63304
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-45117
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the OPC autogenerated ANSI C stack stubs. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Affected software

UA-Nodeset
SITOP Manager
SIMATIC NET PC Software
TeleControl Server

How to mitigate CVE-2021-45117

Install update from vendor's website.

UA-Nodeset - update to 1.05.01-2022-02-24
SIMATIC NET PC Software - addressed in versions 14 SP1 Update 14, 17 SP1

External References

Related Security Bulletins