rhsa-2021_5217
Vulnerability from csaf_redhat
Published
2021-12-20 16:16
Modified
2024-11-06 00:16
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.5.0 security update

Notes

Topic
A security update is now available for Red Hat Single Sign-On 7.5 from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This is an asynchronous patch for Red Hat Single Sign-On 7.5, and includes one security fix. Security Fix: * keycloak: Incorrect authorization allows unpriviledged users to create other users (CVE-2021-4133) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "A security update is now available for Red Hat Single Sign-On 7.5 from the Customer Portal.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications.\n\nThis is an asynchronous patch for Red Hat Single Sign-On 7.5, and includes one security fix.\n\nSecurity Fix:\n\n* keycloak: Incorrect authorization allows unpriviledged users to create other users (CVE-2021-4133)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2021:5217",
        "url": "https://access.redhat.com/errata/RHSA-2021:5217"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=securityPatches\u0026product=core.service.rhsso\u0026version=7.5",
        "url": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=securityPatches\u0026product=core.service.rhsso\u0026version=7.5"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.5/",
        "url": "https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.5/"
      },
      {
        "category": "external",
        "summary": "2033602",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2033602"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_5217.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Single Sign-On 7.5.0 security update",
    "tracking": {
      "current_release_date": "2024-11-06T00:16:39+00:00",
      "generator": {
        "date": "2024-11-06T00:16:39+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.1.1"
        }
      },
      "id": "RHSA-2021:5217",
      "initial_release_date": "2021-12-20T16:16:21+00:00",
      "revision_history": [
        {
          "date": "2021-12-20T16:16:21+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2021-12-20T16:16:21+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-06T00:16:39+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "RHSSO 7.5 async for CVE-2021-4133",
                "product": {
                  "name": "RHSSO 7.5 async for CVE-2021-4133",
                  "product_id": "RHSSO 7.5 async for CVE-2021-4133",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:red_hat_single_sign_on:7"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Single Sign-On"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Grzegorz Soba\u0144ski"
          ],
          "organization": "MLabs"
        }
      ],
      "cve": "CVE-2021-4133",
      "cwe": {
        "id": "CWE-863",
        "name": "Incorrect Authorization"
      },
      "discovery_date": "2021-12-17T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2033602"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak version from 12.0.0 and before 15.1.1 which allows an attacker with any existing user account to create new default user accounts via the administrative REST API even when new user registration is disabled.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Keycloak: Incorrect authorization allows unpriviledged users to create other users",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw affects only Red Hat Single Sign-on 7.5.0. Red Hat Single Sign-on 7.4.x releases are NOT affected. Fix is available for download from customer portal which can be applied on RH-SSO 7.5.0",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "RHSSO 7.5 async for CVE-2021-4133"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-4133"
        },
        {
          "category": "external",
          "summary": "RHBZ#2033602",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2033602"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-4133",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-4133"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-4133",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4133"
        },
        {
          "category": "external",
          "summary": "https://github.com/keycloak/keycloak/issues/9247",
          "url": "https://github.com/keycloak/keycloak/issues/9247"
        },
        {
          "category": "external",
          "summary": "https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487",
          "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487"
        }
      ],
      "release_date": "2021-12-16T17:05:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-12-20T16:16:21+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.\n\nThe References section of this erratum contains a download link (you must log in to download the update).",
          "product_ids": [
            "RHSSO 7.5 async for CVE-2021-4133"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:5217"
        },
        {
          "category": "workaround",
          "details": "Access to the user-creation functionality in the REST endpoint can be deactivated using CLI commands in undertow.\nrun:\n\nbin/jboss-cli.sh --connect\n/subsystem=undertow/configuration=filter/expression-filter=keycloakPathOverrideUsersCreateEndpoint:add( \\\n  expression=\"(regex(\u0027^/auth/admin/realms/(.*)/users$\u0027) and method(POST))-\u003e response-code(400)\" \\\n)\n/subsystem=undertow/server=default-server/host=default-host/filter-ref=keycloakPathOverrideUsersCreateEndpoint:add()",
          "product_ids": [
            "RHSSO 7.5 async for CVE-2021-4133"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "RHSSO 7.5 async for CVE-2021-4133"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "Keycloak: Incorrect authorization allows unpriviledged users to create other users"
    }
  ]
}


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