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CVE-2011-3143

10.0 · HIGH

Use-after-free vulnerability in Control Microsystems ClearSCADA 2005, 2007, and 2009 before R2.3 and R1.4, as used in SCX before 67 R4.5 and 68 R3.9, allows remote attackers to cause a denial of se…

Published Aug 16, 2011avevaCWE-399EPSS 7.51%

Overview

CVE-2011-3143 is a high-severity vulnerability affecting aveva clearscada. It was published on August 16, 2011 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Use-after-free vulnerability in Control Microsystems ClearSCADA 2005, 2007, and 2009 before R2.3 and R1.4, as used in SCX before 67 R4.5 and 68 R3.9, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified long strings that trigger heap memory corruption.

Remediation

Check the references section for vendor advisories and patches from aveva. Update clearscada to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
schneider-electricscx_67>= 0, < r4.5Affected
schneider-electricscx_68>= 0, < r3.9Affected

References

Refsecunia.com/advisories/44955Refwww.digitalbond.com/scadapedia/vulnerability-notes/heap-overflow-vulnerability/Refwww.osvdb.org/72989Refwww.securityfocus.com/bid/46312Refwww.us-cert.gov/control_systems/pdf/ICSA-10-314-01.pdfRefwww.us-cert.gov/control_systems/pdf/ICSA-10-314-01A.pdfRefsecunia.com/advisories/44955Refwww.digitalbond.com/scadapedia/vulnerability-notes/heap-overflow-vulnerability/Refwww.osvdb.org/72989Refwww.securityfocus.com/bid/46312

How CyberStrike helps

Frequently asked questions

What is CVE-2011-3143?

CVE-2011-3143 is a high-severity vulnerability affecting aveva clearscada. It was published on August 16, 2011 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2011-3143?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-3143?

Check the references section for vendor advisories and patches from aveva. Update clearscada to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-3143?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-3143 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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