DSA-2021-272: Dell PowerFlex Security Update for Apache Log4j Remote Code Execution Vulnerability (CVE-2021-44228, CVE-2021-45046, and CVE-2021-45105)

요약: Dell PowerFlex remediation is available for the Apache Log4j Remote Code Execution Vulnerability that may be exploited by malicious users to compromise the affected system. Dell recommends implementing this remediation as soon as possible in light of the critical severity of the vulnerability. ...

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기타 리소스 확인

영향

Critical

세부 정보

Third-party Component CVEs More information
Apache Log4j CVE-2021-44228, CVE-2021-45046, CVE-2021-45105 Apache Log4j Remote Code Execution
Third-party Component CVEs More information
Apache Log4j CVE-2021-44228, CVE-2021-45046, CVE-2021-45105 Apache Log4j Remote Code Execution
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영향을 받는 제품 및 문제 해결

Product Affected Versions Updated Versions Link to Update
PowerFlex Software: Presentation Server Versions 3.5, 3.5.1, 3.5.1.1, 3.5.1.2, 3.5.1.3, 3.5.1.4, 3.6, 3.6.0.1, and 3.6.0.2 3.6.0.3 and 3.5.1.5 PowerFlex 3.6.0.3 build 107 Complete Software 

PowerFlex 3.5.1.5 Build 105 Complete Software Download


Note: The table above may not be a comprehensive list of all affected supported versions and may be updated as more information becomes available.
Product Affected Versions Updated Versions Link to Update
PowerFlex Software: Presentation Server Versions 3.5, 3.5.1, 3.5.1.1, 3.5.1.2, 3.5.1.3, 3.5.1.4, 3.6, 3.6.0.1, and 3.6.0.2 3.6.0.3 and 3.5.1.5 PowerFlex 3.6.0.3 build 107 Complete Software 

PowerFlex 3.5.1.5 Build 105 Complete Software Download


Note: The table above may not be a comprehensive list of all affected supported versions and may be updated as more information becomes available.

해결 방법 및 완화 방안

Implement the following workaround on the PowerFlex Presentation server OS:

Option 1:

  1. Download the zip file "log4j-2.17.1-presentation_server_mitigation.zip " from the PowerFlex support site: https://www.dell.com/support/home/en-us/product-support/product/scaleio/drivers.
Note: It requires login permissions to https://www.dell.com/support.
  1. SSH to the presentation server and log in with the relevant credentials, and copy the zip using SCP or WinSCP to the folder you are currently logged in to.
For RHEL or CentOS 6, 7, or 8, SLES15.x, and Ubuntu 18/20, use the below changes to mitigate this security vulnerability:
  • For PowerFlex 3.6 or 3.5, run the following steps:
    1. Check the files are under the following location using: ls /opt/emc/scaleio/mgmt-server/lib/ |grep log4.
    2. Run the following commands to remove: 
Commands:
rm /opt/emc/scaleio/mgmt-server/lib/log4j-*
unzip log4j-2.17.1-presentation_server_mitigation.zip -d /opt/emc/scaleio/mgmt-server/lib
Note: if you don’t have unzip on the OS you can use tar -xvf <zip file> or install unzip on the OS
chown mgmt-server /opt/emc/scaleio/mgmt-server/lib/log4j*
chgrp mgmt-server /opt/emc/scaleio/mgmt-server/lib/log4j*

After finishing configuration steps:
  • If you are running on a system with SELinux enabled, run the following command:
Command:
restorecon -Fv /opt/emc/scaleio/mgmt-server/lib/log4j*
  • For PowerFlex 3.6 with RHEL 7.x or 8.x, SLES, and Ubuntu, follow the below step:
  1. Use the following command to restart the mgmt-server service (for all OS versions above):
Command:
systemctl restart mgmt-server
  • For PowerFlex 3.6 with RHEL 6.x, follow the below step:
    1. Use the following commands to restart the service:
Commands:
initctl stop mgmt-server
initctl start mgmt-server
  • For PowerFlex 3.5 on RHEL 7.x or 8.x, follow the below steps:
  1. Use the following command to reload the daemon config files:
Command:
systemctl daemon-reload
  1. Use the following command to restart the mgmt-server service:
Command:
systemctl restart mgmt-server.service

This allows the parameter to be read in properly. If you restart the service without reloading the daemon config files, it uses what is in memory and you are not using the parameter change.
  • For PowerFlex 3.5 on RHEL 6.x, follow the below step:
    1. Use the following commands to restart the service:
Commands:
initctl stop mgmt-server
initctl start mgmt-server
 
At this point, logging is still enabled, and the vulnerability is contained. The log4j files can also be moved or deleted on the presentation server as a different workaround, but this stops logging for the presentation server. All config changes are still logged with the MDM and the trace logs there.

Option 2:
  • Remove Log4j files from the OS using the following steps:
Note: This option removes the presentation server logging capability, the MDM event logging continues to function and register Cluster events.
  • Run command: rm -f /opt/emc/scaleio/mgmt-server/lib/log4j*
After finishing configuration steps:
  • For PowerFlex 3.6 with RHEL 7.x or 8.x, follow the below step:
    1. Use the following command to restart the mgmt-server service (for all OS versions above):
Command:
systemctl restart mgmt-server
  • For PowerFlex 3.6 with RHEL 6.x, follow the below step:
    1. Use the following commands to restart the service:
Commands:
initctl stop mgmt-server
initctl start mgmt-server
  • For PowerFlex 3.5 on RHEL 7.x or 8.x, follow the below steps:
    1. Use the following command to reload the daemon config files:
Command:
systemctl daemon-reload
  1. Use the following command to restart the mgmt-server service:
Command:
systemctl restart mgmt-server.service
 
This allows the new jar to be reloaded. If you restart the service without reloading the daemon config files, it uses what is in memory and you are not using the change.
  • For PowerFlex 3.5 on RHEL 6.x, follow the below step:
    1. Use the following commands to restart the service
Commands:
initctl stop mgmt-server
initctl start mgmt-server

At this point, logging is not enabled, and the vulnerability is contained.

개정 내역

 

RevisionDateDescription
1.02021-12-15Initial Release
1.12021-12-22Update for addition of CVE-2021-45105
1.22022-01-04Added new ZIP with Log4j 2.17.1 remediation
1.32022-01-06Added revised ZIP with Log4j 2.17.1 and unzip guidance
2.02022-01-20Added Link to Update: Remediation made available for versions 3.6.0.3 and 3.5.1.5
2.12022-01-25Minor update to Workarounds and Mitigations section. 
 

관련 정보

Dell Security Advisories and Notices
Dell Vulnerability Response Policy
CVSS Scoring Guide

법적 고지 사항

해당 제품

PowerFlex custom node, Product Security Information, VxFlex Ready Node, ScaleIO Ready Node-PowerEdge 13G
문서 속성
문서 번호: 000194548
문서 유형: Dell Security Advisory
마지막 수정 시간: 25 1월 2022
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