What is the severity of CVE-2011-4871?

CVE-2011-4871 is classified as a denial of service vulnerability.

How do I fix CVE-2011-4871?

To fix CVE-2011-4871, upgrade to OPC Systems.NET version 5.0 or later.

Which versions of OPC Systems.NET are affected by CVE-2011-4871?

OPC Systems.NET versions prior to 5.0, including all versions up to 4.0, are affected by CVE-2011-4871.

What type of attack does CVE-2011-4871 facilitate?

CVE-2011-4871 facilitates a denial of service attack through malformed .NET RPC packets.

What is the primary vector of CVE-2011-4871?

The primary vector of CVE-2011-4871 is through TCP port 58723.

Vulnerability/
CVE-2011-4871

medium

CWE

18/4/2012

3/10/2022

7/8/2024

CVE-2011-4871: Input Validation

First published: Wed Apr 18 2012(Updated: )

Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723.

Credit: cret@cert.org

Affected Software	Affected Version	How to fix
Opcsystems Opcsystems.net	<=4.0

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Reference Links

http://www.us-cert.gov/control_systems/pdf/ICSA-12-012-01.pdf

Frequently Asked Questions

What is the severity of CVE-2011-4871?
CVE-2011-4871 is classified as a denial of service vulnerability.
How do I fix CVE-2011-4871?
To fix CVE-2011-4871, upgrade to OPC Systems.NET version 5.0 or later.
Which versions of OPC Systems.NET are affected by CVE-2011-4871?
OPC Systems.NET versions prior to 5.0, including all versions up to 4.0, are affected by CVE-2011-4871.
What type of attack does CVE-2011-4871 facilitate?
CVE-2011-4871 facilitates a denial of service attack through malformed .NET RPC packets.
What is the primary vector of CVE-2011-4871?
The primary vector of CVE-2011-4871 is through TCP port 58723.

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source/MITRE
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agent/author
agent/last-modified-date
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canonical/opcsystems opcsystems.net
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Frequently Asked Questions

What is the severity of CVE-2011-4871?
CVE-2011-4871 is classified as a denial of service vulnerability.
How do I fix CVE-2011-4871?
To fix CVE-2011-4871, upgrade to OPC Systems.NET version 5.0 or later.
Which versions of OPC Systems.NET are affected by CVE-2011-4871?
OPC Systems.NET versions prior to 5.0, including all versions up to 4.0, are affected by CVE-2011-4871.
What type of attack does CVE-2011-4871 facilitate?
CVE-2011-4871 facilitates a denial of service attack through malformed .NET RPC packets.
What is the primary vector of CVE-2011-4871?
The primary vector of CVE-2011-4871 is through TCP port 58723.