Vulnerability-Lookup

GHSA-XRX9-GJ26-5WX9

Vulnerability from github – Published: 2022-10-07 07:33 – Updated: 2022-10-07 07:33

Summary

v8n vulnerable to Inefficient Regular Expression Complexity

Details

Impact

Inefficient regular expression complexity of lowercase() and uppercase() regex could lead to a denial of service attack. With a formed payload 'a' + 'a'.repeat(i) + 'A', only 32 characters payload could take 29443 ms time execution when testing lowercase(). The same issue happens with uppercase().

Patches

v1.5.1

References

huntr.dev report Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking

For more information

If you have any questions or comments about this advisory: * Open an issue in v8n issues list * Email us at brunodev02221@gmail.com

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": "npm",
        "name": "v8n"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-35923"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-10-07T07:33:44Z",
    "nvd_published_at": "2022-08-02T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nInefficient regular expression complexity of `lowercase()` and `uppercase()` regex could lead to a denial of service attack. With a formed payload `\u0027a\u0027 + \u0027a\u0027.repeat(i) + \u0027A\u0027`, only 32 characters payload could take 29443 ms time execution when testing `lowercase()`. The same issue happens with `uppercase()`.\n\n### Patches\nv1.5.1\n\n### References\n[huntr.dev report](https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609)\n[_Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking_](https://snyk.io/blog/redos-and-catastrophic-backtracking/)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [v8n issues list](https://github.com/imbrn/v8n)\n* Email us at [brunodev02221@gmail.com](mailto:brunodev02221@gmail.com)\n",
  "id": "GHSA-xrx9-gj26-5wx9",
  "modified": "2022-10-07T07:33:44Z",
  "published": "2022-10-07T07:33:44Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35923"
    },
    {
      "type": "WEB",
      "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/imbrn/v8n"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "v8n vulnerable to Inefficient Regular Expression Complexity"
}

CVE-2022-35923 (GCVE-0-2022-35923)

Vulnerability from cvelistv5 – Published: 2022-08-02 20:10 – Updated: 2025-04-22 17:45

Title

Inefficient Regular Expression Complexity in v8n

Summary

v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.

Severity

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:40 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/imbrn/v8n/security/advisories/…	x_refsource_CONFIRM
https://github.com/imbrn/v8n/commit/92393862156fa…	x_refsource_MISC
https://huntr.dev/bounties/2d92f644-593b-43b4-bfd…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
imbrn	v8n	Affected: < 1.5.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "providerMetadata": {
          "dateUpdated": "2024-08-03T09:51:58.523Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9"
          },
          {
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            "url": "https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9"
          },
          {
            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/"
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        ],
        "title": "CVE Program Container"
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      {
        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2022-35923",
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                  },
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-22T15:40:02.652401Z",
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        "providerMetadata": {
          "dateUpdated": "2025-04-22T17:45:31.262Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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        }
      ],
      "metrics": [
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            "attackVector": "NETWORK",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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      "problemTypes": [
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      "references": [
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        },
        {
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        },
        {
          "tags": [
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          "url": "https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/"
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      ],
      "source": {
        "advisory": "GHSA-xrx9-gj26-5wx9",
        "discovery": "UNKNOWN"
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      "title": "Inefficient Regular Expression Complexity in v8n",
      "x_legacyV4Record": {
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        },
        "affects": {
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              {
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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.

Action not permitted

GHSA-XRX9-GJ26-5WX9

Impact

Patches

References

For more information

CVE-2022-35923 (GCVE-0-2022-35923)

Tags

Sightings

Nomenclature

Related by attack behaviour