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PatchSiren cyber security CVE debrief

CVE-2006-0743 Rockwell Automation CVE debrief

A format string vulnerability in the log4net component of Rockwell Automation AADvance Standalone OPC-DA Server allows arbitrary code execution. The vulnerability affects versions 2.01.510 and later. Rockwell Automation has released version 2.02 to address this issue. The vulnerability is remotely exploitable with low attack complexity and requires no privileges or user interaction, though the CVSS v3.1 score of 5.3 (MEDIUM) reflects availability impact only (C:N/I:N/A:L). This CVE was published on August 13, 2024, as part of CISA's coordinated disclosure process for industrial control systems.

Vendor
Rockwell Automation
Product
Rockwell Automation AADvance Standalone OPC-DA Server: >=v2.01.510
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2024-08-13
Original CVE updated
2024-08-13
Advisory published
2024-08-13
Advisory updated
2024-08-13

Who should care

Organizations operating Rockwell Automation AADvance Standalone OPC-DA Server in industrial control system environments, particularly those with externally accessible OPC-DA interfaces. Asset owners in critical infrastructure sectors (energy, manufacturing, water/wastewater) using this product for process data access should prioritize patching based on their SSVC analysis.

Technical summary

The vulnerability exists in the log4net logging component used by the AADvance Standalone OPC-DA Server. Format string vulnerabilities in logging frameworks can allow attackers to inject malicious format specifiers that lead to memory corruption or code execution. The affected versions (2.01.510 and later) should be updated to version 2.02 or later to remediate this vulnerability. The network-accessible nature of OPC-DA servers in industrial environments increases exposure risk, though the CVSS scoring indicates the primary impact is to availability rather than confidentiality or integrity.

Defensive priority

medium

Recommended defensive actions

  • Update AADvance Standalone OPC-DA Server to version 2.02 or later per vendor guidance
  • Review Rockwell Automation security best practices for industrial control systems
  • Apply network segmentation and defense-in-depth strategies for OPC-DA server deployments
  • Monitor for anomalous log4net-related activity in affected systems
  • Use CISA's Stakeholder-Specific Vulnerability Categorization (SSVC) for environment-specific prioritization

Evidence notes

The vulnerability description and remediation guidance are derived from CISA CSAF advisory ICSA-24-226-02. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L indicates network attack vector, low complexity, no privileges required, no user interaction, and availability impact only. The affected product version range (>=v2.01.510) and vendor fix (v2.02 or later) are explicitly stated in the CSAF remediation section.

Sources and references

Verified primary and authoritative sources

  • CVE-2006-0743 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2006-0743

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2006-0743 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2006-0743

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-226-02.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-226-02

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.