GitHub Advisoryadvisory · NuGet

GHSA-9q94-v7ch-mxqw Insufficient Session Expiration and TOCTOU Race Condition in OPC FOundation UA .Net Standard

MEDIUM Published 2021-08-02 Modified 2021-05-25 Official page ↗
Aliases
CVE-2020-8867
Ecosystem
NuGet
Packages
OPCFoundation.NetStandard.Opc.Ua
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-367, CWE-613
Reviewed
2021-05-25

Affected packages

• NuGet OPCFoundation.NetStandard.Opc.Ua: < 1.4.359.31 → fixed in 1.4.359.31

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.

Related

Weakness · not in database (1)

Alias · CVE (1)

  • CVE-2020-8867 This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET… vulnerability

Weakness · CWE (1)

  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition weakness

References