CVE-2023-43646 Inefficient Regular Expression Complexity in get-func-name

2023-09-2618:19:29

CWE-1333

CWE-400

GitHub_M

www.cve.org

vulnerability

regular expression

denial of service

nodejs

browser

imbalance in parentheses

cpu load

processing time

commit f934b228b

upgrade

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.5

Confidence

High

EPSS

0.001

Percentile

20.5%

JSON

get-func-name is a module to retrieve a function’s name securely and consistently both in NodeJS and the browser. Versions prior to 2.0.1 are subject to a regular expression denial of service (redos) vulnerability which may lead to a denial of service when parsing malicious input. 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’. This issue has been addressed in commit f934b228b which has been included in releases from 2.0.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CNA Affected

[
  {
    "vendor": "chaijs",
    "product": "get-func-name",
    "versions": [
      {
        "version": "< 2.0.1",
        "status": "affected"
      }
    ]
  }
]