rhsa-2023_7484
Vulnerability from csaf_redhat
Published
2023-11-24 16:56
Modified
2024-12-17 02:54
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.6 security update on RHEL 9

Notes

Topic
New Red Hat Single Sign-On 7.6.6 packages are now available for Red Hat Enterprise Linux 9. 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 7.6 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 7.6.6 on RHEL 9 serves as a replacement for Red Hat Single Sign-On 7.6.5, and includes bug fixes and enhancements. Security Fix(es): * undertow: HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487) * netty-codec-http2: HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487) * bouncycastle: potential blind LDAP injection attack using a self-signed certificate (CVE-2023-33201) * keycloak: impersonation and lockout possible through incorrect handling of email trust (CVE-2023-0105) 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": "New Red Hat Single Sign-On 7.6.6 packages are now available for Red Hat Enterprise Linux 9.\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.",
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        "text": "Red Hat Single Sign-On 7.6 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 7.6.6 on RHEL 9 serves as a replacement for Red Hat Single Sign-On 7.6.5, and includes bug fixes and enhancements.\n\nSecurity Fix(es):\n\n* undertow: HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)\n* netty-codec-http2: HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)\n* bouncycastle: potential blind LDAP injection attack using a self-signed certificate (CVE-2023-33201)\n* keycloak: impersonation and lockout possible through incorrect handling of email trust (CVE-2023-0105)\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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    "title": "Red Hat Security Advisory: Red Hat Single Sign-On 7.6.6 security update on RHEL 9",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Willem Noort"
          ],
          "organization": "Inverid",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2023-0105",
      "cwe": {
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        "name": "Improper Enforcement of Behavioral Workflow"
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      "discovery_date": "2022-11-07T00:00:00+00:00",
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          "text": "A flaw was found in Keycloak. This flaw allows impersonation and lockout due to the email trust not being handled correctly in Keycloak. An attacker can shadow other users with the same email and lockout or impersonate them.",
          "title": "Vulnerability description"
        },
        {
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          "text": "keycloak: impersonation and lockout possible through incorrect handling of email trust",
          "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"
        }
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-0105"
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          "summary": "RHBZ#2158910",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2158910"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-0105",
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0105"
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        {
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          "summary": "https://github.com/advisories/GHSA-c7xw-p58w-h6fj",
          "url": "https://github.com/advisories/GHSA-c7xw-p58w-h6fj"
        }
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      "release_date": "2023-01-06T00:00:00+00:00",
      "remediations": [
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          "date": "2023-11-24T16:56:41+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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          "url": "https://access.redhat.com/errata/RHSA-2023:7484"
        }
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
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            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.11-2.redhat_00001.1.el9sso.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: impersonation and lockout possible through incorrect handling of email trust"
    },
    {
      "cve": "CVE-2023-33201",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2023-06-16T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2215465"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Bouncy Castle 1.73. This issue targets the fix of LDAP wild cards. Before the fix there was no validation for the X.500 name of any certificate, subject, or issuer, so the presence of a wild card may lead to information disclosure. This could allow a malicious user to obtain unauthorized information via blind LDAP Injection, exploring the environment and enumerating data. The exploit depends on the structure of the target LDAP directory as well as what kind of errors are exposed to the user.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "bouncycastle: potential  blind LDAP injection attack using a self-signed certificate",
          "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"
        }
      ],
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-33201"
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          "summary": "RHBZ#2215465",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2215465"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-33201",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-33201"
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-33201",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-33201"
        },
        {
          "category": "external",
          "summary": "https://github.com/bcgit/bc-java/wiki/CVE-2023-33201",
          "url": "https://github.com/bcgit/bc-java/wiki/CVE-2023-33201"
        }
      ],
      "release_date": "2023-06-16T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-11-24T16:56:41+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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            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
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          "restart_required": {
            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2023:7484"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
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            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.11-2.redhat_00001.1.el9sso.noarch"
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "bouncycastle: potential  blind LDAP injection attack using a self-signed certificate"
    },
    {
      "cve": "CVE-2023-44487",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2023-10-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2242803"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RST_STREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any server-side limit for the maximum number of active streams per connection, resulting in a denial of service due to server resource consumption. Red Hat has rated the severity of this flaw as \u0027Important\u0027 as the US Cybersecurity and Infrastructure Security Agency (CISA) declared this vulnerability an active exploit.\r\n\r\nCVE-2023-39325 was assigned for the Rapid Reset Attack in the Go language packages.\r\n\r\nSecurity Bulletin\r\nhttps://access.redhat.com/security/vulnerabilities/RHSB-2023-003",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "NGINX has been marked as Moderate Impact because, for performance and resource consumption reasons, NGINX limits the number of concurrent streams to a default of 128. In addition, to optimally balance network and server performance, NGINX allows the client to persist HTTP connections for up to 1000 requests by default using an HTTP keepalive.\n\nThe majority of RHEL utilities are not long-running applications; instead, they are command-line tools. These tools utilize Golang package as build-time dependency, which is why they are classified as having a \"Moderate\" level of impact.\n\nrhc component is no longer impacted by CVE-2023-44487 \u0026 CVE-2023-39325.",
          "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": [
          "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.noarch",
          "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
          "9Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.11-2.redhat_00001.1.el9sso.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-44487"
        },
        {
          "category": "external",
          "summary": "RHBZ#2242803",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2242803"
        },
        {
          "category": "external",
          "summary": "RHSB-2023-003",
          "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2023-003"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-44487",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-44487"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-44487",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-44487"
        },
        {
          "category": "external",
          "summary": "https://github.com/dotnet/announcements/issues/277",
          "url": "https://github.com/dotnet/announcements/issues/277"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2023-2102",
          "url": "https://pkg.go.dev/vuln/GO-2023-2102"
        },
        {
          "category": "external",
          "summary": "https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487",
          "url": "https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487"
        },
        {
          "category": "external",
          "summary": "https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/",
          "url": "https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/"
        },
        {
          "category": "external",
          "summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
          "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        }
      ],
      "release_date": "2023-10-10T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-11-24T16:56:41+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": [
            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.noarch",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.11-2.redhat_00001.1.el9sso.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2023:7484"
        },
        {
          "category": "workaround",
          "details": "Users are strongly urged to update their software as soon as fixes are available. \nThere are several mitigation approaches for this flaw. \n\n1. If circumstances permit, users may disable http2 endpoints to circumvent the flaw altogether until a fix is available.\n2. IP-based blocking or flood protection and rate control tools may be used at network endpoints to filter incoming traffic.\n3. Several package specific mitigations are also available. \n     a. nginx: https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/\n     b. netty: https://github.com/netty/netty/security/advisories/GHSA-xpw8-rcwv-8f8p\n     c. haproxy: https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487\n     d. nghttp2: https://github.com/nghttp2/nghttp2/security/advisories/GHSA-vx74-f528-fxqg\n     e. golang: The default stream concurrency limit in golang is 250 streams (requests) per HTTP/2 connection. This value may be adjusted in the golang.org/x/net/http2 package using the Server.MaxConcurrentStreams setting and the ConfigureServer function which are available in golang.org/x/net/http2.",
          "product_ids": [
            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.noarch",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.11-2.redhat_00001.1.el9sso.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.noarch",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.11-2.redhat_00001.1.el9sso.src",
            "9Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.11-2.redhat_00001.1.el9sso.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "exploit_status",
          "date": "2023-10-10T00:00:00+00:00",
          "details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
        },
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)"
    }
  ]
}


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