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CVE Record

CVE-2019-4305: IBM WebSphere Application Server Liberty could allow a remote attacker to obtain sensitive information caus...

IBM WebSphere Application Server Liberty could allow a remote attacker to obtain sensitive information caused by the improper setting of a cookie. IBM X-Force ID: 160951.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a data exposure issue in IBM WebSphere Application Server Liberty. A remote attacker could obtain sensitive information because a cookie is set improperly. The CVSS score is 5.3, so urgency is moderate unless the affected Liberty service handles sensitive sessions or is exposed to untrusted networks.

Executive priority

Handle as a moderate-priority confidentiality issue. Escalate priority where Liberty supports login, customer portals, regulated data, or internet-exposed applications. No active exploitation is confirmed in the supplied sources.

Technical view

CVE-2019-4305 affects IBM WebSphere Application Server Liberty. The vulnerability is described as improper cookie setting leading to low confidentiality impact. The CVSS vector indicates network attackability, low complexity, no privileges required, no user interaction, and no integrity or availability impact.

Likely exposure

Organizations running IBM WebSphere Application Server Liberty are the relevant exposure group. Public-facing Liberty applications, authentication flows, and applications carrying sensitive session or user data should be prioritized for inventory and vendor-version validation.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. The CVSS exploit maturity is listed as unproven, so treat exploitation as plausible but not confirmed from the supplied evidence.

Researcher notes

The source bundle does not include exact vulnerable version ranges or cookie attributes. Avoid assuming affected builds beyond IBM Liberty. Use IBM advisory and X-Force as authoritative references for fix levels and technical detail.

Mitigation direction

  • Check IBM advisory 960171 for affected Liberty levels and fix guidance.
  • Apply IBM-supported fixes or upgrades for affected Liberty deployments.
  • Prioritize internet-facing and authentication-related Liberty applications.
  • Review cookie handling configuration after remediation.
  • Monitor IBM X-Force entry 160951 for updated guidance.

Validation and detection

  • Inventory WebSphere Application Server Liberty deployments and versions.
  • Compare installed levels against IBM advisory 960171.
  • Confirm affected applications no longer set the vulnerable cookie behavior.
  • Review security test results for unintended sensitive cookie exposure.
  • Document remediation status for public-facing Liberty services.
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-2019-4305 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/S:U/AV:N/I:N/UI:N/A:N/C:L/AC:L/PR:N/RC:C/RL:O/E:U

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/S:U/AV:N/I:N/UI:N/A:N/C:L/AC:L/PR:N/RC:C/RL:O/E:U3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.3Medium
CVSS 3.0 vector shape for CVE-2019-4305Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMWebSphere Application ServerLibertyListed
Weakness

CWE details

No CWE listed

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