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CVE Record

CVE-2020-4383: IBM Spectrum Scale for IBM Elastic Storage Server 5.3.0 through 5.3.5 could allow an authenticated user to...

IBM Spectrum Scale for IBM Elastic Storage Server 5.3.0 through 5.3.5 could allow an authenticated user to cause a denial of service during deployment while configuring some of the network services. IBM X-Force ID: 179165.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-4383 is a denial-of-service issue in IBM Spectrum Scale for IBM Elastic Storage Server during deployment network-service configuration. An authenticated user with low privileges could disrupt availability, but the CVSS data indicates high attack complexity and no confidentiality or integrity impact.

Executive priority

Treat as a planned remediation item unless the affected storage environment is mission-critical or deployment activity is imminent. Prioritize access control review immediately and schedule vendor-guided remediation.

Technical view

The CVSS 3.0 vector is 5.3 medium: network adjacent logic, low privileges required, no user interaction, unchanged scope, high availability impact, no confidentiality or integrity impact, and high attack complexity. The described affected range is IBM Spectrum Scale for IBM Elastic Storage Server 5.3.0 through 5.3.5.

Likely exposure

Exposure is most relevant to organizations running IBM Elastic Storage Server 5.3.x and allowing authenticated users to participate in deployment or network-service configuration workflows.

Exploitation context

The bundle does not cite known active exploitation, and CISA KEV status is false. The issue requires authentication and high attack complexity, reducing broad opportunistic risk, but deployment-time disruption can still affect storage availability.

Researcher notes

Evidence identifies denial of service during deployment network-service configuration, but the bundle does not include root-cause detail, PoC status, or exact fixed package. Avoid assuming broader IBM Spectrum Scale exposure beyond Elastic Storage Server versions cited.

Mitigation direction

  • Review IBM advisory for the exact supported fix or upgrade level.
  • Restrict deployment and network-service configuration access to trusted administrators.
  • Limit management-plane network access to approved administrative sources.
  • Monitor deployment activity for unexpected service failures or interruptions.

Validation and detection

  • Inventory IBM Elastic Storage Server deployments and record 5.3.x versions.
  • Confirm whether any systems run 5.3.0 through 5.3.5.
  • Review administrative access to deployment and network configuration functions.
  • Check IBM X-Force and support advisory status before closing remediation.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-4383 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/PR:L/A:H/I:N/AC:H/UI:N/C:N/S:U/AV:N/E:U/RL:O/RC:C

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.3CVSS 3.0MediumCVSS:3.0/PR:L/A:H/I:N/AC:H/UI:N/C:N/S:U/AV:N/E:U/RL:O/RC:C1.63.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.3Medium
CVSS 3.0 vector shape for CVE-2020-4383Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/PR:L/A:H/I:N/AC:H/UI:N/C:N/S:U/AV:N/E:U/RL:O/RC:C

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMElastic Storage Server5.3.0, 5.3.6Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.