GHSA-9q94-v7ch-mxqw
Insufficient Session Expiration and TOCTOU Race Condition in OPC FOundation UA .Net Standard
At a glance
- Published
- Updated
- CVE
- CVE-2020-8867
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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. Was ZDI-CAN-10295.
Affected packages
| Package | Versions |
|---|---|
| NuGet · OPCFoundation.NetStandard.Opc.Ua | introduced 0, fixed 1.4.359.31 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-8867 ADVISORY
- https://github.com/OPCFoundation/UA-.NETStandard/releases/tag/1.4.359.31 WEB
- https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf WEB
- https://www.zerodayinitiative.com/advisories/ZDI-20-536 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |