Vulnerability-Lookup

GHSA-4PC7-VQV5-5R3V

Vulnerability from github – Published: 2022-04-27 21:25 – Updated: 2022-12-01 22:10

Summary

ECP SAML binding bypasses authentication flows

Details

Description

A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity.

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-saml-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "18.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3827"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-04-27T21:25:59Z",
    "nvd_published_at": "2022-08-23T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Description\nA flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user\u0027s credentials. The highest threat from this vulnerability is to confidentiality and integrity.\n",
  "id": "GHSA-4pc7-vqv5-5r3v",
  "modified": "2022-12-01T22:10:45Z",
  "published": "2022-04-27T21:25:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3827"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-3827"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"
    },
    {
      "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:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ECP SAML binding bypasses authentication flows"
}

CVE-2021-3827 (GCVE-0-2021-3827)

Vulnerability from cvelistv5 – Published: 2022-08-23 15:52 – Updated: 2024-08-03 17:09

Summary

A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity.

Severity

No CVSS data available.

CWE

CWE-287 - - Improper Authentication

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1035 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/keycloak/keycloak/security/adv…	x_refsource_MISC
https://github.com/keycloak/keycloak/commit/44000…	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=2007512	x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2021-3827	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	keycloak	Affected: Fixed in v18.0.0

Show details on NVD website

JSON

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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.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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