CVE-2022-37012
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.78%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.78% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-911
- Affected
- unified-automation/opc ua c\+\+ demo server
- Source
- zdi-disclosures@trendmicro.com
References
- https://documentation.unified-automation.com/uasdkcpp/1.7.7/CHANGELOG.txtRelease Notes
- https://www.zerodayinitiative.com/advisories/ZDI-22-1030/Third Party Advisory, VDB Entry
- https://documentation.unified-automation.com/uasdkcpp/1.7.7/CHANGELOG.txtRelease Notes
- https://www.zerodayinitiative.com/advisories/ZDI-22-1030/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.