rhsa-2021_2070
Vulnerability from csaf_redhat
Published
2021-05-20 17:49
Modified
2024-09-13 22:45
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.4.7 security update

Notes

Topic
A security update is now available for Red Hat Single Sign-On 7.4 from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 7.4 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 7.4.7 serves as a replacement for Red Hat Single Sign-On 7.4.6, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix(es): * netty: Information disclosure via the local system temporary directory (CVE-2021-21290) * netty: possible request smuggling in HTTP/2 due missing validation (CVE-2021-21295) * keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP (CVE-2021-3461) * keycloak: Internationalized domain name (IDN) homograph attack to impersonate users (CVE-2021-3424) 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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{
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      "text": "Moderate"
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    "category": "csaf_vex",
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    "notes": [
      {
        "category": "summary",
        "text": "A security update is now available for Red Hat Single Sign-On 7.4 from the Customer Portal.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. 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 7.4 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 7.4.7 serves as a replacement for Red Hat Single Sign-On 7.4.6, 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* netty: Information disclosure via the local system temporary directory (CVE-2021-21290)\n\n* netty: possible request smuggling in HTTP/2 due missing validation (CVE-2021-21295)\n\n* keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP (CVE-2021-3461)\n\n* keycloak: Internationalized domain name (IDN) homograph attack to impersonate users (CVE-2021-3424)\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"
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        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1941565"
      },
      {
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        "summary": "Canonical URL",
        "url": "https://access.redhat.com/security/data/csaf/v2/advisories/2021/rhsa-2021_2070.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Single Sign-On 7.4.7 security update",
    "tracking": {
      "current_release_date": "2024-09-13T22:45:09+00:00",
      "generator": {
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        "engine": {
          "name": "Red Hat SDEngine",
          "version": "3.33.3"
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      "id": "RHSA-2021:2070",
      "initial_release_date": "2021-05-20T17:49:55+00:00",
      "revision_history": [
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          "summary": "Initial version"
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          "summary": "Last updated version"
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  "product_tree": {
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                "category": "product_name",
                "name": "Red Hat Single Sign-On 7.4.7",
                "product": {
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Kristian Klausen"
          ]
        }
      ],
      "cve": "CVE-2021-3424",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "discovery_date": "2021-02-26T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1933320"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in keycloak, where IDN homograph attacks are possible. This flaw allows a malicious user to register a name that already exists and then tricking an admin to grant extra privileges. The highest threat from this vulnerability is to integrity.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Internationalized domain name (IDN) homograph attack to impersonate users",
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Single Sign-On 7.4.7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-3424"
        },
        {
          "category": "external",
          "summary": "RHBZ#1933320",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933320"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-3424",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-3424"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3424",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3424"
        },
        {
          "category": "external",
          "summary": "https://github.com/keycloak/keycloak/security/advisories/GHSA-mwm4-5qwr-g9pf",
          "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-mwm4-5qwr-g9pf"
        }
      ],
      "release_date": "2021-03-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "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": [
            "Red Hat Single Sign-On 7.4.7"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2070"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Single Sign-On 7.4.7"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "keycloak: Internationalized domain name (IDN) homograph attack to impersonate users"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Peter Maz\u00e1n (peter.mazan@tatramed.sk)"
          ],
          "organization": "TatraMed Software"
        }
      ],
      "cve": "CVE-2021-3461",
      "cwe": {
        "id": "CWE-613",
        "name": "Insufficient Session Expiration"
      },
      "discovery_date": "2021-03-22T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1941565"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in keycloak where keycloak may fail to logout user session if the logout request comes from external SAML identity provider and Principal Type is set to Attribute [Name].",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP",
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Single Sign-On 7.4.7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-3461"
        },
        {
          "category": "external",
          "summary": "RHBZ#1941565",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1941565"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-3461",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-3461"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3461",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3461"
        }
      ],
      "release_date": "2021-03-22T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "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": [
            "Red Hat Single Sign-On 7.4.7"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2070"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Single Sign-On 7.4.7"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP"
    },
    {
      "cve": "CVE-2021-21290",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2021-02-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1927028"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "In Netty there is a vulnerability on Unix-like systems involving an insecure temp file. When netty\u0027s multipart decoders are used, a local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty: Information disclosure via the local system temporary directory",
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Single Sign-On 7.4.7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-21290"
        },
        {
          "category": "external",
          "summary": "RHBZ#1927028",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1927028"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-21290",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-21290"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-21290",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21290"
        }
      ],
      "release_date": "2021-02-09T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "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": [
            "Red Hat Single Sign-On 7.4.7"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2070"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Single Sign-On 7.4.7"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "netty: Information disclosure via the local system temporary directory"
    },
    {
      "cve": "CVE-2021-21295",
      "cwe": {
        "id": "CWE-444",
        "name": "Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)"
      },
      "discovery_date": "2021-03-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1937364"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel\u0027s pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty: possible request smuggling in HTTP/2 due missing validation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform\u0027s OpenDaylight will not be updated for this flaw because it was deprecated as of OpenStack Platform 14 and is only receiving security fixes for Important and Critical flaws.",
          "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": [
          "Red Hat Single Sign-On 7.4.7"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-21295"
        },
        {
          "category": "external",
          "summary": "RHBZ#1937364",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937364"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-21295",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-21295"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-21295",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21295"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj"
        }
      ],
      "release_date": "2021-03-09T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "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": [
            "Red Hat Single Sign-On 7.4.7"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:2070"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Single Sign-On 7.4.7"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "netty: possible request smuggling in HTTP/2 due missing validation"
    }
  ]
}


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