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CVE-2020-4347: IBM InfoSphere Information Server 11.3, 11.5, and 11.7 could be subject to attacks based on privilege escal...

IBM InfoSphere Information Server 11.3, 11.5, and 11.7 could be subject to attacks based on privilege escalation due to inappropriate file permissions for files used by WebSphere Application Server Network Deployment. IBM X-Force ID: 178412.

HighCVSS 7.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This vulnerability affects IBM InfoSphere Information Server 11.3, 11.5, and 11.7. Weak file permissions on files used by WebSphere Application Server Network Deployment could let an attacker escalate privileges and affect confidentiality, integrity, and availability at a limited level.

Executive priority

Prioritize remediation for any internet-exposed or broadly reachable InfoSphere environments. The issue is high severity and potentially reachable without credentials, but current provided evidence does not show confirmed active exploitation.

Technical view

CVE-2020-4347 is a privilege escalation issue caused by inappropriate file permissions in IBM InfoSphere Information Server deployments using WebSphere Application Server Network Deployment files. The CVSS 3.0 score is 7.3, with network attack vector, low complexity, no user interaction, and no privileges required.

Likely exposure

Exposure is limited to environments running IBM InfoSphere Information Server versions 11.3, 11.5, or 11.7. The provided sources do not identify other IBM products, hosted services, or third-party packages as affected.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation. CVSS indicates network reachability and low attack complexity, but the exploit maturity field is unproven, so treat exposure seriously without claiming known exploitation.

Researcher notes

The key evidence is IBM's description and CVSS vector. The bundle does not include detailed affected file paths, exploit mechanics, or specific patch package names. CVSS remediation level indicates an official fix, but package selection should come from IBM advisory guidance.

Mitigation direction

  • Identify all InfoSphere Information Server 11.3, 11.5, and 11.7 instances.
  • Review IBM advisory and X-Force entry for the official applicable remediation.
  • Apply vendor-provided fixes or upgrades according to IBM guidance.
  • Restrict network access to affected application and management interfaces where feasible.
  • Audit WebSphere-related file permissions only against IBM-documented expectations.

Validation and detection

  • Confirm installed InfoSphere Information Server versions against the affected list.
  • Verify IBM remediation status on each affected environment.
  • Review WebSphere Application Server Network Deployment file permissions against IBM guidance.
  • Check logs for unexplained privilege, service-account, or permission changes.
  • Document any compensating network restrictions until remediation is complete.
Prepared
Confidence
high
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-4347 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
High
CVSS
7.3 (3.0)
Known Exploited
No
Published

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

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
7.3CVSS 3.0HighCVSS:3.0/I:L/C:L/S:U/AV:N/AC:L/UI:N/A:L/PR:N/E:U/RC:C/RL:O3.93.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.3High
CVSS 3.0 vector shape for CVE-2020-4347Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMInfoSphere Information Server11.3, 11.5, 11.7Listed
Weakness

CWE details

No CWE listed

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