CVE-2023-22467 luxon.js inefficient regular expression complexity vulnerability

2023-01-0421:52:14

CWE-1333

GitHub_M

www.cve.org

luxon

javascript

datetime

cve

vulnerability

regular expression

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

0.008

Percentile

81.4%

JSON

Luxon is a library for working with dates and times in JavaScript. On the 1.x branch prior to 1.38.1, the 2.x branch prior to 2.5.2, and the 3.x branch on 3.2.1, Luxon’s `DateTime.fromRFC2822() has quadratic (N^2) complexity on some specific inputs. This causes a noticeable slowdown for inputs with lengths above 10k characters. Users providing untrusted data to this method are therefore vulnerable to (Re)DoS attacks. This issue also appears in Moment as CVE-2022-31129. Versions 1.38.1, 2.5.2, and 3.2.1 contain patches for this issue. As a workaround, limit the length of the input.

CNA Affected

[
  {
    "vendor": "moment",
    "product": "luxon",
    "versions": [
      {
        "version": ">= 1.0.0, < 1.38.1",
        "status": "affected"
      },
      {
        "version": ">= 2.0.0, < 2.5.2",
        "status": "affected"
      },
      {
        "version": ">= 3.0.0, < 3.2.1",
        "status": "affected"
      }
    ]
  }
]