GHSA-4Q6P-R6V2-JVC5

Vulnerability from github – Published: 2023-09-27 20:16 – Updated: 2023-10-02 21:05
VLAI?
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:

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:

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

Here is a simple PoC code to demonstrate the issue:

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");
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
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 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.