Vulnerability CVE-2021-40873
Published: 2021-11-10   Modified: 2021-11-11

Description:
An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66, and uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a client or server. The server process may crash unexpectedly because of a double free, and must be restarted.

Type:

CWE-415

 (Double Free)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Softing -> Datafeed opc suite 
Softing -> Edgeconnector 
Softing -> OPC 
Softing -> Secure integration server 
Softing -> Th scope 
Softing -> Uagates 
Softing -> Uatoolkit embedded 

 References:
https://industrial.softing.com/
https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin_CVE-2021-40873.pdf
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