Vulnerability-Lookup

GHSA-7Q4H-PJ78-J7VG

Vulnerability from github – Published: 2021-05-13 22:31 – Updated: 2021-10-21 17:14

Summary

Authorization service vulnerable to DDos attacks in Apache CFX

Details

CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.

Severity

7.5 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.cxf:cxf"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.4.0"
            },
            {
              "fixed": "3.4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.cxf:cxf"
      },
      "ranges": [
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            }
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    {
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      },
      "ranges": [
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      },
      "ranges": [
        {
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              "introduced": "0"
            },
            {
              "fixed": "3.3.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-22696"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-04-05T18:02:48Z",
    "nvd_published_at": "2021-04-02T10:15:00Z",
    "severity": "HIGH"
  },
  "details": "CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a \"request\" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the \"request_uri\" parameter. CXF was not validating the \"request_uri\" parameter (apart from ensuring it uses \"https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.",
  "id": "GHSA-7q4h-pj78-j7vg",
  "modified": "2021-10-21T17:14:23Z",
  "published": "2021-05-13T22:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22696"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/cxf/commit/40503a53914758759894f704bbf139ae89ace286"
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    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    },
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      "type": "WEB",
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  "schema_version": "1.4.0",
  "severity": [
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      "type": "CVSS_V3"
    }
  ],
  "summary": "Authorization service vulnerable to DDos attacks in Apache CFX"
}

CVE-2021-22696 (GCVE-0-2021-22696)

Vulnerability from cvelistv5 – Published: 2021-04-02 10:05 – Updated: 2025-02-13 16:27

Title

OAuth 2 authorization service vulnerable to DDos attacks

Summary

Severity

No CVSS data available.

CWE

CWE-918 - Server-Side Request Forgery (SSRF)
CWE-400 - Uncontrolled Resource Consumption

Assigner

apache mitre root

References

9 references

URL	Tags
https://cxf.apache.org/security-advisories.data/C…	x_refsource_MISC
https://lists.apache.org/thread.html/r8651c06212c…	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/04/02/2	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r8651c06212c…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rec7160382ba…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r6445001cc5f…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rfb87e0bf399…	mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache CXF	Affected: unspecified , < 3.4.3 (custom) Affected: unspecified , < 3.3.10 (custom)

Show details on NVD website

JSON

To clipboard

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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.

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.