ghsa-4q6p-r6v2-jvc5
Vulnerability from github
Published
2023-09-27 20:16
Modified
2023-10-02 21:05
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Chaijs/get-func-name vulnerable to ReDoS
Details

The current regex implementation for parsing values in the module is susceptible to excessive backtracking, leading to potential DoS attacks. The regex implementation in question is as follows:

js const functionNameMatch = /\s*function(?:\s|\s*\/\*[^(?:*/)]+\*\/\s*)*([^\s(/]+)/;

This vulnerability can be exploited when there is an imbalance in parentheses, which results in excessive backtracking and subsequently increases the CPU load and processing time significantly. This vulnerability can be triggered using the following input:

js '\t'.repeat(54773) + '\t/function/i'

Here is a simple PoC code to demonstrate the issue:

```js const protocolre = /\sfunction(?:\s|\s/[^(?:\/)]+/\s)*([^(\/]+)/;

const startTime = Date.now(); const maliciousInput = '\t'.repeat(54773) + '\t/function/i'

protocolre.test(maliciousInput);

const endTime = Date.now();

console.log("process time: ", endTime - startTime, "ms"); ```

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "get-func-name"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-43646"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-09-27T20:16:00Z",
    "nvd_published_at": "2023-09-27T15:19:34Z",
    "severity": "HIGH"
  },
  "details": "The current regex implementation for parsing values in the module is susceptible to excessive backtracking, leading to potential DoS attacks. The regex implementation in question is as follows:\n\n```js\nconst functionNameMatch = /\\s*function(?:\\s|\\s*\\/\\*[^(?:*/)]+\\*\\/\\s*)*([^\\s(/]+)/;\n```\n\nThis vulnerability can be exploited when there is an imbalance in parentheses, which results in excessive backtracking and subsequently increases the CPU load and processing time significantly. This vulnerability can be triggered using the following input:\n\n```js\n\u0027\\t\u0027.repeat(54773) + \u0027\\t/function/i\u0027\n```\n\nHere is a simple PoC code to demonstrate the issue:\n\n```js\nconst protocolre = /\\sfunction(?:\\s|\\s/*[^(?:*\\/)]+*/\\s*)*([^\\(\\/]+)/;\n\nconst startTime = Date.now();\nconst maliciousInput = \u0027\\t\u0027.repeat(54773) + \u0027\\t/function/i\u0027\n\nprotocolre.test(maliciousInput);\n\nconst endTime = Date.now();\n\nconsole.log(\"process time: \", endTime - startTime, \"ms\");\n```",
  "id": "GHSA-4q6p-r6v2-jvc5",
  "modified": "2023-10-02T21:05:48Z",
  "published": "2023-09-27T20:16:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/chaijs/get-func-name/security/advisories/GHSA-4q6p-r6v2-jvc5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43646"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chaijs/get-func-name/commit/f934b228b5e2cb94d6c8576d3aac05493f667c69"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chaijs/get-func-name"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chaijs/get-func-name/blob/78ad756441a83f3dc203e50f76c113ae3ac017dc/index.js#L15"
    }
  ],
  "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": "Chaijs/get-func-name vulnerable to ReDoS"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.