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Article Number: 000185202


DSA-2021-048: Dell PowerScale OneFS Security Update for Multiple Vulnerabilities

Summary: Dell PowerScale OneFS contains remediation for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.

Article Content


Impact

Critical

Details

Proprietary Code CVE(s) Description CVSSBase Score CVSS Vector String
CVE-2021-21526 Dell PowerScale OneFS 8.1.0 - 9.1.0 contains a privilege escalation in SmartLock compliance mode that may allow compadmin to execute arbitrary commands as root.
Note: If running in Compliance Mode, this is a critical vulnerability.
6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CVE-2020-26197 Dell PowerScale OneFS 8.1.0 – 9.1.0 contains an LDAP Provider inability to connect over TLSv1.2 vulnerability. It may make it easier to eavesdrop and decrypt such traffic for a malicious actor. 
Note: This does not affect clusters which are not relying on an LDAP server for the authentication provider.
7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2021-21502 Dell PowerScale OneFS 8.1.0 – 9.1.0 contains a use of a key past its expiration date vulnerability. An expired user with ISI_PRIV_LOGIN_SSH is still able to login.
Note: This has already been disclosed in DSA-2021-009, but is included here due to patches for more releases being available.
9.8
(prior disclosure)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Proprietary Code CVE(s) Description CVSSBase Score CVSS Vector String
CVE-2021-21526 Dell PowerScale OneFS 8.1.0 - 9.1.0 contains a privilege escalation in SmartLock compliance mode that may allow compadmin to execute arbitrary commands as root.
Note: If running in Compliance Mode, this is a critical vulnerability.
6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CVE-2020-26197 Dell PowerScale OneFS 8.1.0 – 9.1.0 contains an LDAP Provider inability to connect over TLSv1.2 vulnerability. It may make it easier to eavesdrop and decrypt such traffic for a malicious actor. 
Note: This does not affect clusters which are not relying on an LDAP server for the authentication provider.
7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVE-2021-21502 Dell PowerScale OneFS 8.1.0 – 9.1.0 contains a use of a key past its expiration date vulnerability. An expired user with ISI_PRIV_LOGIN_SSH is still able to login.
Note: This has already been disclosed in DSA-2021-009, but is included here due to patches for more releases being available.
9.8
(prior disclosure)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Dell Technologies recommends all customers consider both the CVSS base score and any relevant temporal and environmental scores that may impact the potential severity associated with a particular security vulnerability.

Affected Products and Remediation

CVE Addressed Affected Version(s) Updated Version(s) Link to Update
CVE-2021-21526 9.0 Upgrade your OneFS version



PowerScale Downloads Area on https://www.dell.com
9.1 March RUP_2021-03

CVE-2020-26197
8.1.0, 8.1.1 Upgrade your OneFS version
8.1.2 March RUP_2021-03
8.2.2 November RUP_2020-11 

CVE-2021-21502
8.1.0, 8.1.1, 8.2.0, 8.2.1, 9.0.0 Upgrade your OneFS version
9.1.0 RUP 2021-01
8.1.2, 8.2.2 RUP 2021-03

Note: The table above may not be a comprehensive list of all affected supported versions and may be updated as more information becomes available.
CVE Addressed Affected Version(s) Updated Version(s) Link to Update
CVE-2021-21526 9.0 Upgrade your OneFS version



PowerScale Downloads Area on https://www.dell.com
9.1 March RUP_2021-03

CVE-2020-26197
8.1.0, 8.1.1 Upgrade your OneFS version
8.1.2 March RUP_2021-03
8.2.2 November RUP_2020-11 

CVE-2021-21502
8.1.0, 8.1.1, 8.2.0, 8.2.1, 9.0.0 Upgrade your OneFS version
9.1.0 RUP 2021-01
8.1.2, 8.2.2 RUP 2021-03

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

Workarounds and Mitigations

CVE ID Workaround(s) and Mitigation(s)
CVE-2021-21526 None.
CVE-2020-26197 Disable LDAP Providers.
CVE-2021-21502
  1. Removing authorized_keys files from homedir/.ssh of expired accounts
  2. Removing expired accounts from roles that have ISI_AUTH_PRIV_SSH
Disabling public key authentication in SSH; login to your cluster with a username which has the appropriate privileges, and at the prompt, enter the following CLI commands:    
# isi ssh modify --auth-settings-template=custom
# isi ssh settings modify --pubkey-authentication=false

Revision History

RevisionDateDescription
1.02021-04-12Initial Release

Related Information

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


The information in this Dell Technologies Security Advisory should be read and used to assist in avoiding situations that may arise from the problems described herein. Dell Technologies distributes Security Advisories to bring important security information to the attention of users of the affected product(s). Dell Technologies assesses the risk based on an average of risks across a diverse set of installed systems and may not represent the actual risk to your local installation and individual environment. It is recommended that all users determine the applicability of this information to their individual environments and take appropriate actions. The information set forth herein is provided "as is" without warranty of any kind. Dell Technologies expressly disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event shall Dell Technologies, its affiliates or suppliers, be liable for any damages whatsoever arising from or related to the information contained herein or actions that you decide to take based thereon, including any direct, indirect, incidental, consequential, loss of business profits or special damages, even if Dell Technologies, its affiliates or suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation shall apply to the extent permissible under law.

Article Properties


Affected Product

PowerScale OneFS

Product

Product Security Information

Last Published Date

28 Sep 2021

Version

2

Article Type

Dell Security Advisory