{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2023-6563", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2023-12-06T18:47:35.594Z", "datePublished": "2023-12-14T18:01:26.005Z", "dateUpdated": "2024-09-18T08:33:37.699Z" }, "containers": { "cna": { "title": "Keycloak: offline session token dos", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the \"consents\" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system." } ], "affected": [ { "vendor": "Red Hat", "product": "Red Hat Single Sign-On 7.6 for RHEL 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rh-sso7-keycloak", "defaultStatus": "affected", "versions": [ { "version": "0:18.0.11-2.redhat_00003.1.el7sso", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:red_hat_single_sign_on:7.6::el7" ] }, { "vendor": "Red Hat", "product": "Red Hat Single Sign-On 7.6 for RHEL 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rh-sso7-keycloak", "defaultStatus": "affected", "versions": [ { "version": "0:18.0.11-2.redhat_00003.1.el8sso", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:red_hat_single_sign_on:7.6::el8" ] }, { "vendor": "Red Hat", "product": "Red Hat Single Sign-On 7.6 for RHEL 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rh-sso7-keycloak", "defaultStatus": "affected", "versions": [ { "version": "0:18.0.11-2.redhat_00003.1.el9sso", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:red_hat_single_sign_on:7.6::el9" ] }, { "vendor": "Red Hat", "product": "RHEL-8 based Middleware Containers", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rh-sso-7/sso76-openshift-rhel8", "defaultStatus": "affected", "versions": [ { "version": "7.6-38", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:rhosemc:1.0::el8" ] }, { "vendor": "Red Hat", "product": "RHEL-8 based Middleware Containers", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rh-sso-7/sso7-rhel8-operator-bundle", "defaultStatus": "affected", "versions": [ { "version": "7.6.6-2", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:rhosemc:1.0::el8" ] }, { "vendor": "Red Hat", "product": "Single Sign-On 7.6.6", "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html", "defaultStatus": "unaffected", "packageName": "keycloak-core", "cpes": [ "cpe:/a:redhat:red_hat_single_sign_on:7.6.6" ] }, { "vendor": "Red Hat", "product": "Red Hat Build of Keycloak", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "keycloak-core", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:build_keycloak:" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2023:7854", "name": "RHSA-2023:7854", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7855", "name": "RHSA-2023:7855", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7856", "name": "RHSA-2023:7856", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7857", "name": "RHSA-2023:7857", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7858", "name": "RHSA-2023:7858", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2023-6563", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253308", "name": "RHBZ#2253308", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] }, { "url": "https://github.com/keycloak/keycloak/issues/13340" } ], "datePublic": "2023-12-14T00:00:00+00:00", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-770", "description": "Allocation of Resources Without Limits or Throttling", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-770: Allocation of Resources Without Limits or Throttling", "workarounds": [ { "lang": "en", "value": "There are three main options to prevent exploitation:\n1) If you are using a reverse proxy, block the consents URL.\n2) This option is less effective: remove the consents application tab from the account console theme.\n3) This option has a significant negative impact on end users: entirely disable offline user profiles." } ], "timeline": [ { "lang": "en", "time": "2023-12-06T00:00:00+00:00", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2023-12-14T00:00:00+00:00", "value": "Made public." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2024-09-18T08:33:37.699Z" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T08:35:14.663Z" }, "title": "CVE Program Container", "references": [ { "url": "https://access.redhat.com/errata/RHSA-2023:7854", "name": "RHSA-2023:7854", "tags": [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7855", "name": "RHSA-2023:7855", "tags": [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7856", "name": "RHSA-2023:7856", "tags": [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7857", "name": "RHSA-2023:7857", "tags": [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://access.redhat.com/errata/RHSA-2023:7858", "name": "RHSA-2023:7858", "tags": [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2023-6563", "tags": [ "vdb-entry", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253308", "name": "RHBZ#2253308", "tags": [ "issue-tracking", "x_refsource_REDHAT", "x_transferred" ] }, { "url": "https://github.com/keycloak/keycloak/issues/13340", "tags": [ "x_transferred" ] } ] } ] } }