GHSA-9VM7-V8WJ-3FQW

Vulnerability from github – Published: 2024-01-23 14:43 – Updated: 2024-12-26 15:09
VLAI
Summary
keycloak-core: open redirect via "form_post.jwt" JARM response mode
Details

An incomplete fix was found in Keycloak Core patch. An attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt". It is observed that changing the response_mode parameter in the original proof of concept from "form_post" to "form_post.jwt" can bypass the security patch implemented to address CVE-2023-6134.

Severity
4.6 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "23.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-6927"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-01-23T14:43:50Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "An incomplete fix was found in Keycloak Core patch. An attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode \"form_post.jwt\". It is observed that changing the response_mode parameter in the original proof of concept from \"form_post\" to \"form_post.jwt\" can bypass the security patch implemented to address CVE-2023-6134.",
  "id": "GHSA-9vm7-v8wj-3fqw",
  "modified": "2024-12-26T15:09:05Z",
  "published": "2024-01-23T14:43:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-9vm7-v8wj-3fqw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6927"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0094"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0095"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0096"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0097"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0098"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0100"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2024:0101"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2023-6927"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255027"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "keycloak-core: open redirect via \"form_post.jwt\" JARM response mode"
}



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