Vulnerability-Lookup

GHSA-3W4V-RVC4-2XPW

Vulnerability from github – Published: 2022-08-27 00:00 – Updated: 2022-09-02 21:12

Summary

Keycloak has Files or Directories Accessible to External Parties

Details

ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.

Severity

4.3 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.keycloak:keycloak-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "15.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3856"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-552"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-09-02T21:12:52Z",
    "nvd_published_at": "2022-08-26T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.",
  "id": "GHSA-3w4v-rvc4-2xpw",
  "modified": "2022-09-02T21:12:52Z",
  "published": "2022-08-27T00:00:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3856"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/pull/8588"
    },
    {
      "type": "WEB",
      "url": "https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-3856"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2010164"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/keycloak/keycloak"
    },
    {
      "type": "WEB",
      "url": "https://issues.redhat.com/browse/KEYCLOAK-19422"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Keycloak has Files or Directories Accessible to External Parties"
}

CVE-2021-3856 (GCVE-0-2021-3856)

Vulnerability from cvelistv5 – Published: 2022-08-26 15:25 – Updated: 2024-08-03 17:09

Summary

Severity

No CVSS data available.

CWE

CWE-552 - - Files or Directories Accessible to External Parties

Assigner

redhat redhat root

References

5 references

URL	Tags
https://issues.redhat.com/browse/KEYCLOAK-19422	x_refsource_MISC
https://github.com/keycloak/keycloak/pull/8588	x_refsource_MISC
https://github.com/keycloak/keycloak/commit/73f04…	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=2010164	x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2021-3856	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	keycloak	Affected: Fixed in 15.1.0

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:09:09.556Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://issues.redhat.com/browse/KEYCLOAK-19422"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/keycloak/keycloak/pull/8588"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2010164"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2021-3856"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "keycloak",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in 15.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-552",
              "description": "CWE-552 - Files or Directories Accessible to External Parties",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-26T15:25:39.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://issues.redhat.com/browse/KEYCLOAK-19422"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/keycloak/keycloak/pull/8588"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2010164"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2021-3856"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3856",
    "datePublished": "2022-08-26T15:25:39.000Z",
    "dateReserved": "2021-10-04T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:09:09.556Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.