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CVE Record

CVE-2024-1249: Keycloak: org.keycloak.protocol.oidc: unvalidated cross-origin messages in checkloginiframe leads to ddos

A flaw was found in Keycloak's OIDC component in the "checkLoginIframe," which allows unvalidated cross-origin messages. This flaw allows attackers to coordinate and send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.

HighCVSS 7.4Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Keycloak can be abused through its OIDC login-check iframe because cross-origin messages are not properly validated. An attacker who can induce user interaction may trigger large volumes of requests, causing availability impact against identity services and applications that depend on them.

Executive priority

High priority for organizations relying on affected Keycloak or Red Hat identity products. The main business risk is login and authentication disruption, not data theft, based on the provided CVSS and description.

Technical view

CVE-2024-1249 is CWE-346 in Keycloak OIDC checkLoginIframe. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H, reflecting unauthenticated network reachability, required user interaction, changed scope, and high availability impact.

Likely exposure

Exposure is most relevant where affected Keycloak, Red Hat build of Keycloak 22, Red Hat Single Sign-On 7.6, RH SSO containers, or listed RHOSS 1.33 packages are deployed and reachable by browsers.

Exploitation context

The bundle does not show CISA KEV listing or confirmed active exploitation. It describes a denial-of-service scenario where attackers coordinate browser-driven request volume through unvalidated cross-origin messages. Treat exploit status as unconfirmed from the provided evidence.

Researcher notes

Focus validation on origin handling around OIDC checkLoginIframe and whether deployed builds include the vendor fix. Do not assume confidentiality or integrity impact; the provided vector and description support availability impact only.

Mitigation direction

  • Apply the relevant Red Hat security advisory updates for deployed affected products.
  • Check Keycloak and Red Hat guidance for fixed versions before changing production.
  • Prioritize identity-provider instances exposed to users or the internet.
  • Review dependent applications for resilience if authentication services become unavailable.

Validation and detection

  • Inventory Keycloak, RH SSO, and Red Hat build of Keycloak package versions.
  • Compare installed packages against the affected versions listed in the CVE bundle.
  • Confirm whether RHSA updates 2024:1860 through 2024:4057 apply to your environment.
  • Validate remediation in staging before production rollout.
Prepared
Confidence
high
Sources
12

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-346: 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.

Open ATT&CK lookup
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-2024-1249 mapping review

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

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.4 (3.1)
Known Exploited
No
Published

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

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
12Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical 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
7.4CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H2.84redhat

Vulnerability scoring details

Base CVSS 3.1 score

7.4High
CVSS 3.1 vector shape for CVE-2024-1249Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  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

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Unknown vendorkeycloakkeycloak, 21.1.0, 23.0.0unaffected
Red HatRed Hat AMQ Broker 7keycloakunaffected
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 22.0.10keycloakunaffected
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, 0:18.0.13-1.redhat_00001.1.el8ssoaffected
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, 7.6-46affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-data-index-ephemeral-rhel8, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-data-index-postgresql-rhel8, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-jobs-service-ephemeral-rhel8, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-jobs-service-postgresql-rhel8, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-kn-workflow-cli-artifacts-rhel8, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-operator-bundle, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-rhel8-operator, 1.33.0-3affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-swf-builder-rhel8, 1.33.0-5affected
Red HatRHOSS-1.33-RHEL-8openshift-serverless-1/logic-swf-devmode-rhel8, 1.33.0-5affected
Red HatRHSSO 7.6.8rh-sso7-keycloakunaffected
Red HatMigration Toolkit for Applications 6mta/mta-ui-rhel8affected
Red HatMigration Toolkit for Applications 7mta/mta-ui-rhel9unaffected
Red HatRed Hat build of Apicurio Registry 2keycloakaffected
Red HatRed Hat Data Grid 8keycloakunaffected
Red HatRed Hat Decision Manager 7keycloakaffected
Red HatRed Hat Developer Hubrhdh-hub-containerunaffected
Red HatRed Hat Fuse 7keycloakunaffected
Red HatRed Hat JBoss Data Grid 7keycloakunaffected
Red HatRed Hat JBoss Enterprise Application Platform 6keycloakunknown
Red HatRed Hat JBoss Enterprise Application Platform 6keycloak-adapter-eap6unknown
Weakness

CWE details

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

CWE-346 · source CWE mapping

Origin Validation Error

Origin Validation Error represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.