CVE-2021-27460

Summary

Rockwell Automation FactoryTalk AssetCentre v10.00 and earlier components contain .NET remoting endpoints that deserialize untrusted data without sufficiently verifying that the resulting data will be valid. This vulnerability may allow a remote, unauthenticated attacker to gain full access to the FactoryTalk AssetCentre main server and all agent machines.

Affected Software

VendorProductVersion RangeStatus
Rockwell AutomationFactoryTalk AssetCentreunspecified <= v10.00affected

Weaknesses

  • CWE-502: CWE-502 Deserialization of Untrusted Data

Workarounds

Rockwell Automation recommends the following software/PC-based mitigation strategies: Run all software as User, not as an Administrator, to minimize the impact of malicious code on the infected system. Use Microsoft AppLocker or other similar allow list applications to help mitigate risk. Information on using AppLocker with Rockwell Automation products is available at Knowledge Base Article QA17329 Ensure the least-privilege user principle is followed, and user/service account access to shared resources (such as a database) is only granted with a minimum number of rights as needed. Rockwell Automation recommends the following general mitigations: Use trusted software, software patches, antivirus/antimalware programs and interact only with trusted web sites and attachments. Minimize network exposure for all control system devices and/or systems and ensure they are not accessible from the Internet. For further information about the risks of unprotected Internet accessible control systems, please see Knowledgebase Article PN715 Locate control system networks and devices behind firewalls and isolate them from the business network. When remote access is required, use secure methods, such as virtual private networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize a VPN is only as secure as the connected devices.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References