ZDI-23-548: (Pwn2Own) OPC Foundation UA .NET Standard ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability
First published: Thu May 04 2023(Updated: )
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard. Authentication is not required to exploit this vulnerability.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OPC Foundation Unified Architecture .NET Standard |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-23-548?
ZDI-23-548 is classified as a denial-of-service vulnerability that can be exploited without authentication.
How do I fix ZDI-23-548?
To remediate ZDI-23-548, it is recommended to update the OPC Foundation UA .NET Standard software to the latest version provided by the vendor.
What types of attacks can be executed due to ZDI-23-548?
ZDI-23-548 allows remote attackers to create a denial-of-service condition, disrupting the service of the affected installations.
Are there any workarounds for ZDI-23-548?
Currently, there are no official workarounds for mitigating the impact of ZDI-23-548 other than applying the software update.
Who is affected by ZDI-23-548?
The vulnerability ZDI-23-548 affects installations of OPC Foundation UA .NET Standard.
- collector/zdi-published
- alias/ZDI-CAN-20505
- agent/type
- agent/last-modified-date
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- agent/severity
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- agent/softwarecombine
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- collector/zdi-advisory
- source/ZDI
- alias/ZDI-23-548
- alias/CVE-2023-27321
- agent/software-canonical-lookup
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- vendor/opc foundation
- canonical/opc foundation unified architecture .net standard