CVE-2019-18276 Rockwell Automation CVE debrief

Who should care

Organizations operating Rockwell Automation DataMosaix Private Cloud in industrial environments, particularly those in critical infrastructure sectors. Security teams responsible for OT/ICS asset management, patch management personnel, and network defenders monitoring industrial control systems should prioritize assessment and remediation.

Technical summary

The vulnerability exists in the disable_priv_mode function within shell.c of GNU Bash versions through 5.0 patch 11, which is utilized by DataMosaix Private Cloud. An attacker with existing shell command execution can use the 'enable -f' built-in command to load arbitrary shared objects at runtime, bypassing intended privilege restrictions. This enables privilege escalation and potential remote code execution. The attack requires local access or prior compromise to obtain shell execution (Attack Vector: Local, Attack Complexity: Low, Privileges Required: Low).

Defensive priority

HIGH

Recommended defensive actions

• Update Rockwell Automation DataMosaix Private Cloud to version 7.09 or later to remediate this vulnerability
• Apply CISA ICS recommended practices for network segmentation and defense-in-depth strategies for industrial control systems
• Review Rockwell Automation security advisories for additional mitigation guidance specific to your deployment
• Implement principle of least privilege for shell access and restrict command execution capabilities where possible
• Monitor for anomalous shell activity and privilege escalation attempts on affected systems prior to patching

Evidence notes

The vulnerability description is derived from CISA CSAF source data indicating DataMosaix Private Cloud uses vulnerable GNU Bash versions. The affected product version is confirmed as <=7.07 in the CSAF product tree. Remediation guidance specifies version 7.09 as the fixed release.

Official resources