CVE-2024-4540: Keycloak services Keycloak Exposes Sensitive Information Vulnerability
HIGHCVE-2024-4540 is a HIGH (CVSS 7.5) keycloak exposes sensitive information vulnerability (CWE-922: Insecure Storage of Sensitive Information) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak exposes sensitive information in pushed authorization requests (par). Remediation is available by upgrading affected packages to version 24.0.5.
CVE-2024-4540 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2024-4540
To remediate this vulnerability, upgrade all affected Keycloak services dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-services</artifactId>
<version>24.0.5</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.keycloakHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2024-4540, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.keycloakAnalyze the terminal output to locate any version of Keycloak services in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 24.0.5), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.keycloak command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-922: Insecure Storage of Sensitive Information, where the product stores sensitive information without properly limiting read or write access by unauthorized actors. In Keycloak services, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2024-4540 Affected Keycloak services Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.keycloak:keycloak-services
|
Maven |
< 24.0.5
|
24.0.5
|
References
Frequently Asked Questions
What is CVE-2024-4540?
Which Keycloak services versions are affected?
What version fixes CVE-2024-4540?
Is keycloak-services affected?
What is the CVSS score of CVE-2024-4540?
What CWE is associated with CVE-2024-4540?
How can I check Maven dependencies for CVE-2024-4540?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-69fp-7c8p-crjr",
"modified" : "2024-07-31T14:51:21Z",
"published" : "2024-06-10T18:36:56Z",
"aliases" : [ "CVE-2024-4540" ],
"summary" : "Keycloak exposes sensitive information in Pushed Authorization Requests (PAR)",
"details" : "A flaw was found in Keycloak in the OAuth 2.0 Pushed Authorization Requests (PAR). Client provided parameters were found to be included in plain text in the KC_RESTART cookie returned by the authorization server's HTTP response to a request_uri authorization request. This could lead to an information disclosure vulnerability.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-services"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "24.0.5"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/security/advisories/GHSA-69fp-7c8p-crjr"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-4540"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/commit/2191cc26ae6deb52eeaf74046027b65804d16fd0"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3566"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3567"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3568"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3570"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3572"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3573"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3574"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3575"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2024:3576"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2024-4540"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2279303"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/keycloak/keycloak"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200", "CWE-922" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2024-06-10T18:36:56Z",
"nvd_published_at" : null
}
}