RHSA-2019:0868

Vulnerability from csaf_redhat - Published: 2019-04-23 17:28 - Updated: 2026-06-28 12:12
Summary
Red Hat Security Advisory: Red Hat Single Sign-On 7.2.7 security update
Severity
Moderate
Notes
Topic: A security update is now available for Red Hat Single Sign-On 7.2 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 7.2 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 7.2.7 serves as a replacement for Red Hat Single Sign-On 7.2.6, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Security Fix(es): * keycloak: session hijack using the user access token (CVE-2019-3868) 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.
CVE-2019-3868

Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session.

3.8 (Low)
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Affected products
Product Identifier Version Remediation
Red Hat Single Sign-On 7.2.7 zip
Red Hat / Red Hat Single Sign-On
 cpe:/a:redhat:jboss_single_sign_on:7.2 —
Vendor Fix fix
Threats
Impact Moderate
References
Acknowledgments
Gemalto E&C Caranzo Gideon Muzamil Muein Siddiqui Najam
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "A security update is now available for Red Hat Single Sign-On 7.2 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 7.2 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 7.2.7 serves as a replacement for Red Hat Single Sign-On 7.2.6, 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* keycloak: session hijack using the user access token (CVE-2019-3868)\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"
      }
    ],
    "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",
        "summary": "https://access.redhat.com/errata/RHSA-2019:0868",
        "url": "https://access.redhat.com/errata/RHSA-2019:0868"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#moderate",
        "url": "https://access.redhat.com/security/updates/classification/#moderate"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso\u0026downloadType=securityPatches\u0026version=7.2",
        "url": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso\u0026downloadType=securityPatches\u0026version=7.2"
      },
      {
        "category": "external",
        "summary": "1679144",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1679144"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2019/rhsa-2019_0868.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Single Sign-On 7.2.7 security update",
    "tracking": {
      "current_release_date": "2026-06-28T12:12:51+00:00",
      "generator": {
        "date": "2026-06-28T12:12:51+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.2.6"
        }
      },
      "id": "RHSA-2019:0868",
      "initial_release_date": "2019-04-23T17:28:19+00:00",
      "revision_history": [
        {
          "date": "2019-04-23T17:28:19+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2019-04-23T17:28:19+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-06-28T12:12:51+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Single Sign-On 7.2.7 zip",
                "product": {
                  "name": "Red Hat Single Sign-On 7.2.7 zip",
                  "product_id": "Red Hat Single Sign-On 7.2.7 zip",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jboss_single_sign_on:7.2"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Single Sign-On"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Caranzo Gideon",
            "Muzamil Muein",
            "Siddiqui Najam"
          ],
          "organization": "Gemalto E\u0026C"
        }
      ],
      "cve": "CVE-2019-3868",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2019-02-20T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1679144"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user\u2019s browser session.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: session hijack using the user access token",
          "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 7.2.7 zip"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-3868"
        },
        {
          "category": "external",
          "summary": "RHBZ#1679144",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1679144"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-3868",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-3868"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-3868",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-3868"
        }
      ],
      "release_date": "2019-04-23T16:59:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2019-04-23T17:28:19+00:00",
          "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 7.2.7 zip"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2019:0868"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.8,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.0"
          },
          "products": [
            "Red Hat Single Sign-On 7.2.7 zip"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "keycloak: session hijack using the user access token"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.