Vulnerability-Lookup

GHSA-JC97-H3H9-7XH6

Vulnerability from github – Published: 2023-04-03 17:18 – Updated: 2023-04-03 17:18

Summary

Regular Expression Denial of Service in Deno.upgradeWebSocket API

Details

Impact

Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.

Patches

It is recommended that users upgrade to Deno 1.31.0.

Severity

5.3 (Medium)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "deno"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.12.0"
            },
            {
              "fixed": "1.31.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-26103"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-04-03T17:18:51Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nVersions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server. \n\n### Patches\nIt is recommended that users upgrade to Deno 1.31.0.\n\n",
  "id": "GHSA-jc97-h3h9-7xh6",
  "modified": "2023-04-03T17:18:51Z",
  "published": "2023-04-03T17:18:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/denoland/deno/security/advisories/GHSA-jc97-h3h9-7xh6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26103"
    },
    {
      "type": "WEB",
      "url": "https://github.com/denoland/deno/pull/17722"
    },
    {
      "type": "WEB",
      "url": "https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/denoland/deno"
    },
    {
      "type": "WEB",
      "url": "https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js#L395-L409"
    },
    {
      "type": "WEB",
      "url": "https://github.com/denoland/deno/releases/tag/v1.31.0"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Regular Expression Denial of Service in Deno.upgradeWebSocket API"
}

CVE-2023-26103 (GCVE-0-2023-26103)

Vulnerability from cvelistv5 – Published: 2023-02-25 05:00 – Updated: 2025-03-11 15:31

Summary

Severity

5.3 (Medium)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-11 15:30 UTC

CWE

CWE-1333 - Regular Expression Denial of Service (ReDoS)
CWE-1333 - Inefficient Regular Expression Complexity

Assigner

snyk CNA under the mitre root

CNA scorecard C 60/100 over 17 records in the last 180 days details

References

5 references

URL	Tags
https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970
https://github.com/denoland/deno/blob/2b247be517d…
https://github.com/denoland/deno/pull/17722
https://github.com/denoland/deno/commit/cf06a7c7e…
https://github.com/denoland/deno/releases/tag/v1.31.0

Impacted products

1 product

Vendor	Product	Version
n/a	deno	Affected: 0 , < 1.31.0 (semver)

Credits

Alessio Della Libera Snyk

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T11:39:06.569Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "tags": [
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            ],
            "url": "https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970"
          },
          {
            "tags": [
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            ],
            "url": "https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/denoland/deno/pull/17722"
          },
          {
            "tags": [
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            "url": "https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06"
          },
          {
            "tags": [
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            ],
            "url": "https://github.com/denoland/deno/releases/tag/v1.31.0"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-26103",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-11T15:30:55.306498Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-1333",
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                "type": "CWE"
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            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-11T15:31:01.247Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "deno",
          "vendor": "n/a",
          "versions": [
            {
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              "status": "affected",
              "version": "0",
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      "credits": [
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        }
      ],
      "descriptions": [
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          "value": "Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server.\r\r"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "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:L",
            "version": "3.1"
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      "providerMetadata": {
        "dateUpdated": "2023-02-25T05:00:01.387Z",
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      "references": [
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  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
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    "datePublished": "2023-02-25T05:00:01.387Z",
    "dateReserved": "2023-02-20T10:28:48.921Z",
    "dateUpdated": "2025-03-11T15:31:01.247Z",
    "state": "PUBLISHED"
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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