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CVE Record

CVE-2023-6484: Keycloak: log injection during webauthn authentication or registration

A log injection flaw was found in Keycloak. A text string may be injected through the authentication form when using the WebAuthn authentication mode. This issue may have a minor impact to the logs integrity.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-6484 is a log injection issue in Keycloak when WebAuthn authentication or registration is used. An unauthenticated attacker may inject text into logs through an authentication form. The stated impact is limited to log integrity, not data theft or service outage.

Executive priority

Treat as a routine but important identity-platform fix. It is not presented as a takeover vulnerability, but identity logs are high-value during incidents. Patch affected public or regulated environments first.

Technical view

The issue is CWE-117 in Keycloak WebAuthn flows. Red Hat rates it medium with CVSS 3.1 score 5.3, vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N. Affected products include listed Red Hat build of Keycloak 22, Red Hat Single Sign-On 7.6, and related RHEL 8 middleware containers.

Likely exposure

Exposure is most likely where Keycloak or Red Hat Single Sign-On exposes authentication or registration endpoints and WebAuthn mode is enabled. Public identity providers have higher operational exposure because their logs may support security investigations, compliance evidence, and incident response.

Exploitation context

The source bundle does not show CISA KEV listing or cited active exploitation. Practical abuse would target log trustworthiness by adding misleading entries. The business risk is mainly investigation confusion or audit noise rather than direct compromise.

Researcher notes

Evidence supports log integrity impact only. The affected matrix is Red Hat-specific and includes RHSSO 7.6 and Red Hat build of Keycloak 22 packages. The bundle does not establish upstream fixed versions or exploitation in the wild.

Mitigation direction

  • Apply the relevant Red Hat security advisory update for affected RHSSO, RHBK, or container packages.
  • If using non-Red Hat Keycloak, check Keycloak or vendor guidance for fixed releases.
  • Prioritize remediation for public-facing identity providers using WebAuthn.
  • Preserve and correlate logs with proxy and identity telemetry during remediation.

Validation and detection

  • Inventory Keycloak, Red Hat build of Keycloak, RHSSO, and SSO container versions.
  • Compare package versions against the affected list in Red Hat’s CVE entry.
  • Confirm whether WebAuthn authentication or registration is enabled.
  • Verify the applicable RHSA is installed or the vendor-fixed build is deployed.
  • Review recent authentication logs for unusual formatting or misleading entries.
Prepared
Confidence
high
Sources
8

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.

cwe · low confidence lookup

CWE-117: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Container behavior lookup

The affected technology mentions containers, so container-specific ATT&CK technique 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-2023-6484 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 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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
5Timeline events
2ADP providers
17Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

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 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N3.91.4redhat

Vulnerability scoring details

Base CVSS 3.1 score

5.3Medium
CVSS 3.1 vector shape for CVE-2023-6484Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. Source timelineredhat

    Made public.

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Unknown vendorkeycloakkeycloak, 0, 23.0.0unaffected
Red HatRed Hat build of Keycloak 22rhbk/keycloak-operator-bundle, 22.0.10-1affected
Red HatRed Hat build of Keycloak 22rhbk/keycloak-rhel9, 22-13affected
Red HatRed Hat build of Keycloak 22rhbk/keycloak-rhel9-operator, 22-16affected
Red HatRed Hat build of Keycloak 22.0.10See advisoryunaffected
Red HatRed Hat Single Sign-On 7rh-sso7-keycloakunaffected
Red HatRed Hat Single Sign-On 7.6 for RHEL 7rh-sso7-keycloak, 0:18.0.12-1.redhat_00001.1.el7ssoaffected
Red HatRed Hat Single Sign-On 7.6 for RHEL 7rh-sso7-keycloak, 0:18.0.13-1.redhat_00001.1.el7ssoaffected
Red HatRed Hat Single Sign-On 7.6 for RHEL 8rh-sso7-keycloak, 0:18.0.12-1.redhat_00001.1.el8ssoaffected
Red HatRed Hat Single Sign-On 7.6 for RHEL 8rh-sso7-keycloak, 0:18.0.13-1.redhat_00001.1.el8ssoaffected
Red HatRed Hat Single Sign-On 7.6 for RHEL 9rh-sso7-keycloak, 0:18.0.12-1.redhat_00001.1.el9ssoaffected
Red HatRed Hat Single Sign-On 7.6 for RHEL 9rh-sso7-keycloak, 0:18.0.13-1.redhat_00001.1.el9ssoaffected
Red HatRHEL-8 based Middleware Containersrh-sso-7/sso76-openshift-rhel8, 7.6-41affected
Red HatRHEL-8 based Middleware Containersrh-sso-7/sso76-openshift-rhel8, 7.6-46affected
Red HatRHEL-8 based Middleware Containersrh-sso-7/sso7-rhel8-init-container, 7.6-16affected
Red HatRHEL-8 based Middleware Containersrh-sso-7/sso7-rhel8-operator, 7.6-18affected
Red HatRHEL-8 based Middleware Containersrh-sso-7/sso7-rhel8-operator-bundle, 7.6.8-2affected
Red HatRHSSO 7.6.8keycloak-rhel9-operator-bundle-containerunaffected
Weakness

CWE details

CWE-117

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

CWE-117 · source CWE mapping

Improper Output Neutralization for Logs

Improper Output Neutralization for Logs represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs