csaf_redhat - rhsa-2021

rhsa-2021_5219

Vulnerability from csaf_redhat

Published

2021-12-20 16:20

Modified

2024-11-06 00:16

Summary

Red Hat Security Advisory: Red Hat Single Sign-On security update on RHEL 8

Notes

Topic

A security update is now available for Red Hat Single Sign-On 7.5 on Red Hat Enterprise Linux 8. 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.

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.

JSON

To clipboard

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      "text": "Important"
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    "category": "csaf_security_advisory",
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        "title": "Details"
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      {
        "category": "legal_disclaimer",
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        "title": "Terms of Use"
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    "publisher": {
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  },
  "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": {
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        {
          "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",
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          "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487"
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      ],
      "release_date": "2021-12-16T17:05:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-12-20T16:20:57+00:00",
          "details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:5219"
        },
        {
          "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": [
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            "8Base-RHSSO-7.5:rh-sso7-keycloak-0:15.0.2-3.redhat_00002.1.el8sso.src",
            "8Base-RHSSO-7.5:rh-sso7-keycloak-server-0:15.0.2-3.redhat_00002.1.el8sso.noarch"
          ]
        }
      ],
      "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": [
            "8Base-RHSSO-7.5:rh-sso7-keycloak-0:15.0.2-3.redhat_00002.1.el8sso.noarch",
            "8Base-RHSSO-7.5:rh-sso7-keycloak-0:15.0.2-3.redhat_00002.1.el8sso.src",
            "8Base-RHSSO-7.5:rh-sso7-keycloak-server-0:15.0.2-3.redhat_00002.1.el8sso.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "Keycloak: Incorrect authorization allows unpriviledged users to create other users"
    }
  ]
}

cve-2021-4133

Vulnerability from cvelistv5

Published

2022-01-25 19:11

Modified

2024-08-03 17:16

Severity ?

Summary

A flaw was found in Keycloak in versions 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.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=2033602	x_refsource_MISC
	https://github.com/keycloak/keycloak/issues/9247	x_refsource_MISC
	https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487	x_refsource_MISC
	https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC

Impacted products

▼	Vendor	Product
	n/a	Keycloak

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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