CyberSecBulletin
CVE-2023-32463NVD status: Modified

Dell VxRail, version(s) 8.0.100 and earlier contain a denial-of-service vulnerability in the…

Published Updated By the CyberSecBulletin desk

CVE-2023-32463 is a high-severity improper input validation vulnerability in Dell EMC VxRail Appliance from Dell, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Dell EMC VxRail Appliance versions: Version Prior to 8.0.100. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.46% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Vxrail D560 Firmware to 8.0.100 or a later version.
  2. Update Vxrail D560f Firmware to 8.0.100 or a later version.
  3. Update Vxrail E460 Firmware to 8.0.100 or a later version.
  4. Read the advisory on dell.com for workarounds and exact fixed builds.
  5. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
DellDell EMC VxRail ApplianceVersion Prior to 8.0.100Not stated
DellVxrail D560 Firmwarebefore 8.0.1008.0.100
DellVxrail D560f Firmwarebefore 8.0.1008.0.100
DellVxrail E460 Firmwarebefore 8.0.1008.0.100
DellVxrail E560 Firmwarebefore 8.0.1008.0.100
DellVxrail E560 Vcf Firmwarebefore 8.0.1008.0.100
DellVxrail E560f Firmwarebefore 8.0.1008.0.100
DellVxrail E560f Vcf Firmwarebefore 8.0.1008.0.100
DellVxrail E560n Firmwarebefore 8.0.1008.0.100
DellVxrail E560n Vcf Firmwarebefore 8.0.1008.0.100
DellVxrail E660 Firmwarebefore 8.0.1008.0.100
DellVxrail E660f Firmwarebefore 8.0.1008.0.100
DellVxrail E660n Firmwarebefore 8.0.1008.0.100
DellVxrail E665 Firmwarebefore 8.0.1008.0.100
DellVxrail E665f Firmwarebefore 8.0.1008.0.100
DellVxrail E665n Firmwarebefore 8.0.1008.0.100
DellVxrail G560 Firmwarebefore 8.0.1008.0.100
DellVxrail G560 Vcf Firmwarebefore 8.0.1008.0.100
DellVxrail G560f Firmwarebefore 8.0.1008.0.100
DellVxrail G560f Vcf Firmwarebefore 8.0.1008.0.100
DellVxrail P470 Firmwarebefore 8.0.1008.0.100
DellVxrail P570 Firmwarebefore 8.0.1008.0.100
DellVxrail P570 Vcf Firmwarebefore 8.0.1008.0.100
DellVxrail P570f Firmwarebefore 8.0.1008.0.100
DellVxrail P570f Vcf Firmwarebefore 8.0.1008.0.100

Version data comes from the organisation that assigned the CVE; 21 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.13.4LowCNA (emc.com)
CVSS 3.17.5HighNVD

Official description

Dell VxRail, version(s) 8.0.100 and earlier contain a denial-of-service vulnerability in the upgrade functionality. A remote unauthenticated attacker could potentially exploit this vulnerability, leading to degraded performance and system malfunction.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How developers prevent this class of flaw

  • Consider using language-theoretic security (LangSec) techniques that characterize inputs using a formal language and build recognizers for that language. This effectively requires parsing to be a distinct layer that effectively enforces a boundary between raw input and internal data representations, instead of allowing parser code to be scattered throughout the program, where it could be subject to errors or inconsistencies that create weaknesses.
  • Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
  • Understand all the potential areas where untrusted inputs can enter the product, including but not limited to: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.

More Improper Input Validation vulnerabilities (CWE-20)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Improper Input Validation vulnerabilities

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