CVSS: 7.5EPSS: 1%CPEs: 1EXPL: 0CVE-2020-8867 – OPC Foundation UA .NET Standard CreateSessionRequest Race Condition Denial-of-Service Vulnerability
https://notcve.org/view.php?id=CVE-2020-8867
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard 1.04.358.30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of sessions. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to create a denial-of-service condition against the application. • https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf https://www.zerodayinitiative.com/advisories/ZDI-20-536 • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition CWE-613: Insufficient Session Expiration •
CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2018-12086
https://notcve.org/view.php?id=CVE-2018-12086
Buffer overflow in OPC UA applications allows remote attackers to trigger a stack overflow with carefully structured requests. Desbordamiento de búfer en las aplicaciones OPC UA permite que atacantes remotos desencadenen un desbordamiento de pila con peticiones cuidadosamente estructuradas. • http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html http://www.securityfocus.com/bid/105538 http://www.securitytracker.com/id/1041909 https://opcfoundation-onlineapplications.org/faq/SecurityBulletins/OPC_Foundation_Security_Bulletin_CVE-2018-12086.pdf https://www.debian.org/security/2018/dsa-4359 • CWE-787: Out-of-bounds Write •