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Article Number: 000191155


DSA-2021-164: Dell VNX2 Operating Environment for File Security Update for Multiple Vulnerabilities

Summary: Dell VNX2 Operating Environment for File 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 CVEs
Description CVSS Base
Score
CVSS Vector String
CVE-2021-36287 Dell VNX2 for file version 8.1.21.266 and earlier, contain an unauthenticated remote code execution vulnerability which may lead unauthenticated users to execute commands on the system. 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVE-2021-36288 Dell VNX2 for File version 8.1.21.266 and earlier, contain a path traversal vulnerability which may lead unauthenticated users to read/write restricted files 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CVE-2021-36289 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain a sensitive information disclosure vulnerability. A local malicious user may exploit this vulnerability to read sensitive information.
 
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36290 Dell VNX2 for File version 8.1.21.266 and earlier, contain a privilege escalation vulnerability. A local malicious admin may potentially exploit vulnerability and gain privileges. 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36293 Dell VNX2 for File version 8.1.21.266 and earlier, contain a privilege escalation vulnerability. A local malicious admin may potentially exploit vulnerability and gain elevated privileges. 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36294 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authentication bypass vulnerability. A remote unauthenticated attacker may exploit this vulnerability leading to authentication bypass and complete takeover of the VNX system. 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36295 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authenticated remote code execution vulnerability. A remote malicious user with privileges may exploit this vulnerability to execute commands. 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36296 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authenticated remote code execution vulnerability. A remote malicious user with privileges may exploit this vulnerability to execute commands. 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

The two vulnerabilities CVE-2021-36295 and CVE-2021-36296 were reported as a vulnerability chain with CVE-2021-36294.  

The cumulative score of the vulnerability chain: 9.8  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 
Third-party Component CVEs More Information
JRE Launcher CVE-2021-3517 See NVD (http://nvd.nist.gov/) for individual scores for each CVE
CVE-2021-35560
CVE-2021-35567
EMS firmware CVE-2018-9086
NTLM CVE-2021-31958
Proprietary
Code CVEs
Description CVSS Base
Score
CVSS Vector String
CVE-2021-36287 Dell VNX2 for file version 8.1.21.266 and earlier, contain an unauthenticated remote code execution vulnerability which may lead unauthenticated users to execute commands on the system. 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVE-2021-36288 Dell VNX2 for File version 8.1.21.266 and earlier, contain a path traversal vulnerability which may lead unauthenticated users to read/write restricted files 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CVE-2021-36289 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain a sensitive information disclosure vulnerability. A local malicious user may exploit this vulnerability to read sensitive information.
 
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36290 Dell VNX2 for File version 8.1.21.266 and earlier, contain a privilege escalation vulnerability. A local malicious admin may potentially exploit vulnerability and gain privileges. 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36293 Dell VNX2 for File version 8.1.21.266 and earlier, contain a privilege escalation vulnerability. A local malicious admin may potentially exploit vulnerability and gain elevated privileges. 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36294 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authentication bypass vulnerability. A remote unauthenticated attacker may exploit this vulnerability leading to authentication bypass and complete takeover of the VNX system. 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36295 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authenticated remote code execution vulnerability. A remote malicious user with privileges may exploit this vulnerability to execute commands. 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2021-36296 Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authenticated remote code execution vulnerability. A remote malicious user with privileges may exploit this vulnerability to execute commands. 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

The two vulnerabilities CVE-2021-36295 and CVE-2021-36296 were reported as a vulnerability chain with CVE-2021-36294.  

The cumulative score of the vulnerability chain: 9.8  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 
Third-party Component CVEs More Information
JRE Launcher CVE-2021-3517 See NVD (http://nvd.nist.gov/) for individual scores for each CVE
CVE-2021-35560
CVE-2021-35567
EMS firmware CVE-2018-9086
NTLM CVE-2021-31958

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

Product Affected Versions Updated Versions Link to Update
VNX2
 
Version 8.1.21.266 (file), version 5.33.021.5.266 (block) and earlier Version 8.1.21.303 (file)
Version 5.33.021.5.303 (block)
Download and install the appropriate version by VNX2 code family: https://www.dell.com/support/home/en-us/product-support/product/vnxe1600/
 
Product Affected Versions Updated Versions Link to Update
VNX2
 
Version 8.1.21.266 (file), version 5.33.021.5.266 (block) and earlier Version 8.1.21.303 (file)
Version 5.33.021.5.303 (block)
Download and install the appropriate version by VNX2 code family: https://www.dell.com/support/home/en-us/product-support/product/vnxe1600/
 
Acknowledgements

Dell would like to thank Guillaume Quéré for reporting CVE-2021-36287, CVE-2021-36288, CVE-2021-36289, CVE-2021-36290, CVE-2021-36293, CVE-2021-36294, CVE-2021-36295, and CVE-2021-36296.

Revision History

RevisionDateDescription
1.02021-09-01Initial release with workarounds
1.12022-03-31Updated CVEs and link to update

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

VNX VG10, VNX VG50, VNX2 Series, VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, VNX8000, VNXe1600

Product

Product Security Information, VNXe2 Series

Last Published Date

01 Apr 2022

Version

6

Article Type

Dell Security Advisory