Vulnerability-Lookup

FKIE_CVE-2023-22795

Vulnerability from fkie_nvd - Published: 2023-02-09 20:15 - Updated: 2026-06-17 05:36

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

A regular expression based DoS vulnerability in Action Dispatch <6.1.7.1 and <7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking, when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.

References

URL	Tags
support@hackerone.com	https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118	Patch, Vendor Advisory
support@hackerone.com	https://security.netapp.com/advisory/ntap-20240202-0010/
support@hackerone.com	https://www.debian.org/security/2023/dsa-5372	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118	Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20240202-0010/
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2023/dsa-5372	Third Party Advisory

Impacted products

Vendor	Product	Version
rubyonrails	rails	*
rubyonrails	rails	*
ruby-lang	ruby	*
debian	debian_linux	11.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "https://github.com/rails/rails",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "6.1.7.1, 7.0.4.1"
            }
          ]
        }
      ],
      "source": "support@hackerone.com"
    }
  ],
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              "versionEndExcluding": "6.1.7.1",
              "vulnerable": true
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              "matchCriteriaId": "CDA4E147-AAD7-4EA9-BB6B-8358610FEE9A",
              "versionEndExcluding": "7.0.4.1",
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              "versionEndExcluding": "3.2.0",
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        }
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              "vulnerable": true
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  ],
  "cveTags": [],
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      "lang": "en",
      "value": "A regular expression based DoS vulnerability in Action Dispatch \u003c6.1.7.1 and \u003c7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking, when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately."
    }
  ],
  "id": "CVE-2023-22795",
  "lastModified": "2026-06-17T05:36:11.707",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "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",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-02-09T20:15:11.420",
  "references": [
    {
      "source": "support@hackerone.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118"
    },
    {
      "source": "support@hackerone.com",
      "url": "https://security.netapp.com/advisory/ntap-20240202-0010/"
    },
    {
      "source": "support@hackerone.com",
      "tags": [
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      ],
      "url": "https://www.debian.org/security/2023/dsa-5372"
    },
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://www.debian.org/security/2023/dsa-5372"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "support@hackerone.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2023-22795 (GCVE-0-2023-22795)

Vulnerability from cvelistv5 – Published: 2023-02-09 00:00 – Updated: 2024-08-02 10:20

Summary

Severity

No CVSS data available.

CWE

CWE-400 - Denial of Service (CWE-400)

Assigner

hackerone mitre root

References

3 references

URL	Tags
https://discuss.rubyonrails.org/t/cve-2023-22795-…
https://www.debian.org/security/2023/dsa-5372	vendor-advisory
https://security.netapp.com/advisory/ntap-2024020…

Impacted products

1 product

Vendor	Product	Version
n/a	https://github.com/rails/rails	Affected: 6.1.7.1, 7.0.4.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-02T10:20:30.901Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "tags": [
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            "url": "https://discuss.rubyonrails.org/t/cve-2023-22795-possible-redos-based-dos-vulnerability-in-action-dispatch/82118"
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            "name": "DSA-5372",
            "tags": [
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              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2023/dsa-5372"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20240202-0010/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "https://github.com/rails/rails",
          "vendor": "n/a",
          "versions": [
            {
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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        {
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  "dataType": "CVE_RECORD",
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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.