Vulnerability identifier: #VU64467

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-29864

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OPC UA .NET Standard
Server applications / Other server solutions

Vendor: OPC Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within the handling of message chunks. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OPC UA .NET Standard: 1.04.368

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External links
http://opcfoundation.org/security/
http://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2022-29864.pdf
http://www.zerodayinitiative.com/advisories/ZDI-22-854/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.