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Security Advisory for Log4j / Log4Shell CVE-2021-44228

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On December 18, 2021, a new Apache Log4j/Log4Shell Security Vulnerability CVE-2021-45105 was published.  Pure Storage has assessed all Pure product families against this new vulnerability.  FlashArray, FlashBlade, Cloud Block Store, Portworx, Pure1, and VM Analytics Collector are not affected by this vulnerability.

On December 9, 2021, a remote code execution (RCE) vulnerability in Apache Log4j / Log4Shell  CVE-2021-44228  was identified as being exploited.  Pure Storage FlashArray, FlashBlade, Pure Cloud Block Store, Portworx and VMAnalytics collector will require a Purity upgrade or a patch applied to mitigate known risks caused by the vulnerability.  

Our customers are a top priority for us, and we understand that uptime is crucial to their business.  Pure has reviewed the recently published Apache Log4j / Log4Shell Remote Code Execution vulnerability being tracked in CVE-2021-44228 and assessed the impact on our products.  Remediation per product and Purity version are outlined below.

Corrective Action

Please see below recommended Purity upgrade recommendations to mitigate risk from this issue.

Product Version Purity Version Fix Patch
FlashArray Purity//FA 6.2.x 6.2.5 Available  Available
FlashArray Purity//FA 6.1.x 6.1.13 Available Available
FlashArray Purity//FA 6.0.x 6.0.9 Available Available
FlashArray Purity//FA 5.3.x 5.3.18 Available Available
Pure Cloud Block Store 
Pure Cloud Block Store
6.1.13PAZ Available
6.1.13PAWS Available
Pure Cloud Block Store
Pure Cloud Block Store
6.2.4PAZ Available
6.2.4.PAWS Available
FlashBlade Purity//FB 3.0.x (EOL) N/A Available
FlashBlade Purity//FB 3.1.x 3.1.12 Available Available
FlashBlade Purity//FB 3.2.x 3.2.5 Available Available
FlashBlade Purity//FB 3.3.x 3.3.1 Available Available
Portworx Portworx 2.8.0+ with telemetry enabled ccm-service:3.0.8 Available N/A
Pure VMA Collector v3.x VMA collector v3.1.4 Available N/A
Pure1 N/A

Pure1 infrastructure updated

Pure Storage Orchestrator (PSO) N/A Pure Storage Orchestrator (PSO) is not affected by CVE-2021-44228, CVE-2021-45406, CVE-2021-45150 N/A
Pure Storage ActiveCluster On-Premises Mediator N/A Pure Storage ActiveCluster On-Premises Mediator is not affected by CVE-2021-44228, CVE-2021-45406, CVE-2021-45150 N/A

General Mitigation Best Practices  

Pure Storage recommends following network security best practices that minimize the risk of compromise due to these vulnerabilities:

  • Restrict management interfaces to a trusted set of networks. Please see Best practices on restricting public IP addresses. Additional security posture hardening may be achieved by restricting all control plane access through a jump box (bastion host).

  • Restrict outbound Internet access to trusted destinations. Phone Home and Remote Assist (RA) require port 443 (https) to be open to CloudAssist subnet for outbound traffic. A firewall will need to permit inbound traffic for the established connection. 

  • Pure Storage strongly encourages the widely-endorsed best practice of highly restricting -- if not blocking altogether -- Internet access to management interfaces, including connections via SSH, TLS, remote consoles, and remote desktop mechanisms.

  • Closely monitor arrays for abnormal or unexpected workload/IO spikes or utilization as a leading indicator.  

  • Enable edge detection/protection mechanisms in the firewall/IDS/IPS systems to detect anomalous access or traffic patterns.

Contacting Support  

If you would like one of our engineers to assist you with this issue please call +1(866) 244-7121. If calling from outside the US here is a list of phone numbers:

Support Escalation - How To Escalate a Case    

If you believe that you may have been actively exploited, please call +1(866) 244-7121 and request for a Severity 1 case to be created. 

For all other requests for assistance that are not an active Severity 1 / outage/ critical issue, please contact Pure Storage Technical Services for assistance.

If calling from outside the US here is a list of phone numbers: Pure Storage customers can escalate cases in the following ways:

  • Call Pure Storage Support and ask to speak with the Support Manager on Duty.  

  • PHONE (US) +1 (866) 244-7121 or +1 (650) 729-4088


  • Click the escalation link on one of the case emails. Every email from Pure Storage Support displays the following question near the bottom, including a dynamic link: “Not satisfied with the handling of this case? Click here to escalate.”

  • In the upper right-hand Pure1 Case Portal, click Escalate.

  • Please also see:  Customer Escalation Procedures for additional information.

Please contact  Pure Storage Global Technical Services if you have any questions or require assistance applying the patches or upgrade fixes.

Thank you,

Pure Storage Global Technical Services