rhsa-2024_6879
Vulnerability from csaf_redhat
Published
2024-09-19 16:43
Modified
2024-11-15 21:01
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.11 security update on RHEL 8

Notes

Topic
New Red Hat Single Sign-On 7.6.11 packages are now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of none. 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 7.6.11 on RHEL 8 serves as a replacement for Red Hat Single Sign-On 7.6.10, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix(es): * Improper Verification of SAML Responses Leading to Privilege Escalation in Keycloak (CVE-2024-8698) * Vulnerable Redirect URI Validation Results in Open Redirec (CVE-2024-8883) 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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          "names": [
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          ]
        }
      ],
      "cve": "CVE-2024-8698",
      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
      },
      "discovery_date": "2024-09-10T00:00:00+00:00",
      "ids": [
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          "text": "2311641"
        }
      ],
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          "text": "A flaw exists in the SAML signature validation method within the Keycloak XMLSignatureUtil class. The method incorrectly determines whether a SAML signature is for the full document or only for specific assertions based on the position of the signature in the XML document, rather than the Reference element used to specify the signed element. This flaw allows attackers to create crafted responses that can bypass the validation, potentially leading to privilege escalation or impersonation attacks.",
          "title": "Vulnerability description"
        },
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          "text": "keycloak-saml-core: Improper Verification of SAML Responses Leading to Privilege Escalation in Keycloak",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is of high severity due to its potential to facilitate privilege escalation and user impersonation in systems using SAML for authentication. The core issue stems from improper validation logic in Keycloak\u0027s signature validation method, which relies on the position of signatures rather than explicitly checking the referenced elements. By manipulating the XML structure, an attacker can bypass signature validation and inject an unsigned assertion while retaining a valid signed one. This allows unauthorized access to high-privileged accounts, leading to significant security risks in SAML-based identity providers and service providers.",
          "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"
        }
      ],
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          "summary": "https://github.com/keycloak/keycloak/blob/main/saml-core/src/main/java/org/keycloak/saml/processing/core/util/XMLSignatureUtil.java#L415",
          "url": "https://github.com/keycloak/keycloak/blob/main/saml-core/src/main/java/org/keycloak/saml/processing/core/util/XMLSignatureUtil.java#L415"
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          },
          "url": "https://access.redhat.com/errata/RHSA-2024:6879"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L",
            "version": "3.1"
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          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "keycloak-saml-core: Improper Verification of SAML Responses Leading to Privilege Escalation in Keycloak"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Niklas Conrad",
            "Karsten Meyer zu Selhausen"
          ]
        }
      ],
      "cve": "CVE-2024-8883",
      "cwe": {
        "id": "CWE-601",
        "name": "URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)"
      },
      "discovery_date": "2024-09-16T06:17:01.573000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2312511"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a \u0027Valid Redirect URI\u0027 is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially leading to session hijacking.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Keycloak: Vulnerable Redirect URI Validation Results in Open Redirec",
          "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": {
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      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2024-8883"
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          "summary": "RHBZ#2312511",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2312511"
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          "url": "https://www.cve.org/CVERecord?id=CVE-2024-8883"
        },
        {
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8883"
        },
        {
          "category": "external",
          "summary": "https://github.com/keycloak/keycloak/blob/main/services/src/main/java/org/keycloak/protocol/oidc/utils/RedirectUtils.java",
          "url": "https://github.com/keycloak/keycloak/blob/main/services/src/main/java/org/keycloak/protocol/oidc/utils/RedirectUtils.java"
        }
      ],
      "release_date": "2024-09-19T15:13:00+00:00",
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            "8Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.18-1.redhat_00001.1.el8sso.src",
            "8Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.18-1.redhat_00001.1.el8sso.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:6879"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
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            "8Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.18-1.redhat_00001.1.el8sso.src",
            "8Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.18-1.redhat_00001.1.el8sso.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
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            "8Base-RHSSO-7.6:rh-sso7-keycloak-0:18.0.18-1.redhat_00001.1.el8sso.src",
            "8Base-RHSSO-7.6:rh-sso7-keycloak-server-0:18.0.18-1.redhat_00001.1.el8sso.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "Keycloak: Vulnerable Redirect URI Validation Results in Open Redirec"
    }
  ]
}


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