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. Was ZDI-CAN-10295.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-536/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:opcfoundation:unified_architecture_.net-standard:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-04-22 21:15

Updated : 2023-12-10 13:27

NVD link : CVE-2020-8867

Mitre link : CVE-2020-8867

CVE.ORG link : CVE-2020-8867

JSON object : View

Products Affected

opcfoundation

unified_architecture_.net-standard

CWE

CWE-613

Insufficient Session Expiration

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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