RHSA-2016:2945

Vulnerability from csaf_redhat - Published: 2016-12-13 19:26 - Updated: 2025-11-21 17:58
Summary
Red Hat Security Advisory: Red Hat Single Sign-On security update

Notes

Topic
A security update is now available for Red Hat Single Sign-On 7.0 from the Customer Portal. 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 7.0 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 asynchronous patch is a security update for Red Hat Single Sign-On 7.0. Security Fix(es): * It was found that Keycloak did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user's session. This could lead to information disclosure, or permit further possible attacks. (CVE-2016-8609) Red Hat would like to thank Hiroyuki Wada of Nomura Research Institute, Ltd for reporting this issue.
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": "Important"
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    "category": "csaf_security_advisory",
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    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "A security update is now available for Red Hat Single Sign-On 7.0 from the Customer Portal.\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.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Red Hat Single Sign-On 7.0 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 asynchronous patch is a security update for Red Hat Single Sign-On 7.0.\n\nSecurity Fix(es):\n\n* It was found that Keycloak did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user\u0027s session. This could lead to information disclosure, or permit further possible attacks. (CVE-2016-8609)\n\nRed Hat would like to thank Hiroyuki Wada of Nomura Research Institute, Ltd for reporting this issue.",
        "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"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
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        "url": "https://access.redhat.com/errata/RHSA-2016:2945"
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        "url": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso\u0026downloadType=securityPatches\u0026version=7.0"
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        "summary": "1386729",
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      },
      {
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        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2016/rhsa-2016_2945.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Single Sign-On security update",
    "tracking": {
      "current_release_date": "2025-11-21T17:58:50+00:00",
      "generator": {
        "date": "2025-11-21T17:58:50+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.6.12"
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      "id": "RHSA-2016:2945",
      "initial_release_date": "2016-12-13T19:26:02+00:00",
      "revision_history": [
        {
          "date": "2016-12-13T19:26:02+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2016-12-13T19:26:02+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2025-11-21T17:58:50+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
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      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Single Sign-On 7.0",
                "product": {
                  "name": "Red Hat Single Sign-On 7.0",
                  "product_id": "Red Hat Single Sign-On 7.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jboss_single_sign_on:7.0"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Single Sign-On"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Hiroyuki Wada"
          ],
          "organization": "Nomura Research Institute"
        }
      ],
      "cve": "CVE-2016-8609",
      "cwe": {
        "id": "CWE-384",
        "name": "Session Fixation"
      },
      "discovery_date": "2016-10-17T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1386729"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was found that the keycloak did not implement authentication flow correctly. An attacker could use this flaw to construct a phishing URL, from which he could hijack the user\u0027s session. This could lead to information disclosure, or permit further possible attacks.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: account hijacking via auth code fixation",
          "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 7.0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2016-8609"
        },
        {
          "category": "external",
          "summary": "RHBZ#1386729",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1386729"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2016-8609",
          "url": "https://www.cve.org/CVERecord?id=CVE-2016-8609"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-8609",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-8609"
        }
      ],
      "release_date": "2016-12-13T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2016-12-13T19:26:02+00:00",
          "details": "The References section of this erratum contains a download link (you must\nlog in to download the update). Before applying this update, back up your\nexisting Red Hat Single Sign-On installation.",
          "product_ids": [
            "Red Hat Single Sign-On 7.0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2016:2945"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.0"
          },
          "products": [
            "Red Hat Single Sign-On 7.0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: account hijacking via auth code fixation"
    }
  ]
}


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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.



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