RHSA-2020:5527

Vulnerability from csaf_redhat - Published: 2020-12-15 17:08 - Updated: 2025-11-21 18:19
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.4.4 security update on RHEL 7

Notes

Topic
New Red Hat Single Sign-On 7.4.4 packages are now available for Red Hat Enterprise Linux 7.
Details
Red Hat Single Sign-On 7.4 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 release of Red Hat Single Sign-On 7.4.4 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.4.3, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix(es): * keycloak: Account REST API can update user metadata attributes (CVE-2020-27826) 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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        "text": "Red Hat Single Sign-On 7.4 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 release of Red Hat Single Sign-On 7.4.4 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.4.3, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.\n\nSecurity Fix(es):\n\n* keycloak: Account REST API can update user metadata attributes (CVE-2020-27826)\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.",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Marek Posolda"
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          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2020-27826",
      "cwe": {
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        "name": "Execution with Unnecessary Privileges"
      },
      "discovery_date": "2020-12-07T00:00:00+00:00",
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      "notes": [
        {
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          "text": "A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user\u0027s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Account REST API can update user metadata attributes",
          "title": "Vulnerability summary"
        },
        {
          "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.",
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        }
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        }
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        {
          "category": "vendor_fix",
          "date": "2020-12-15T17:08:56+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",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "keycloak: Account REST API can update user metadata attributes"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.