Vulnerability-Lookup

GSD-2020-27222

Vulnerability from gsd - Updated: 2023-12-13 01:22

Details

In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS.

Aliases

CVE-2020-27222

Aliases

CVE-2020-27222

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2020-27222",
    "description": "In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS.",
    "id": "GSD-2020-27222",
    "references": [
      "https://access.redhat.com/errata/RHSA-2021:3207",
      "https://access.redhat.com/errata/RHSA-2021:3205"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-27222"
      ],
      "details": "In Eclipse Californium version 2.3.0 to 2.6.0, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this. This allow clients to force a DoS.",
      "id": "GSD-2020-27222",
      "modified": "2023-12-13T01:22:11.210347Z",
      "schema_version": "1.4.0"
    }
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          "affected_versions": "All versions starting from 2.3.0 up to 2.6.0",
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          "cwe_ids": [
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            "CWE-937"
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          "date": "2021-02-09",
          "description": "In Eclipse Californium to, the certificate based (x509 and RPK) DTLS handshakes accidentally fails, because the DTLS server side sticks to a wrong internal state. That wrong internal state is set by a previous certificate based DTLS handshake failure with TLS parameter mismatch. The DTLS server side must be restarted to recover this.",
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          "package_slug": "maven/org.eclipse.californium/californium-core",
          "pubdate": "2021-02-03",
          "solution": "Upgrade to version 2.6.1 or above.",
          "title": "Uncontrolled Resource Consumption",
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            "https://nvd.nist.gov/vuln/detail/CVE-2020-27222",
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            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
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          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
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            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-02-09T15:21Z",
      "publishedDate": "2021-02-03T16:15Z"
    }
  }
}

CVE-2020-27222 (GCVE-0-2020-27222)

Vulnerability from cvelistv5 – Published: 2021-02-03 15:45 – Updated: 2024-08-04 16:11

Summary

Severity

No CVSS data available.

CWE

CWE-372 - Incomplete Internal State Distinction

Assigner

eclipse mitre root

References

1 reference

URL	Tags
https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
The Eclipse Foundation	Eclipse Californium	Affected: [2.3.0, 2.6.0]

Show details on NVD website

JSON

To clipboard

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            "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        }
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          "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=570844"
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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.