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Security Advisories: GSA_kwCzR0hTQS0zeHE1LXdqZmgtcHBqY84AAw0p

Luxon Inefficient Regular Expression Complexity vulnerability

Impact

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 is the same bug as Moment's https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g

Workarounds

Limit the length of the input.

References

There is an excellent writeup of the same issue in Moment: https://github.com/moment/moment/pull/6015#issuecomment-1152961973

Details

DateTime.fromRFC2822("(".repeat(500000)) takes a couple minutes to complete.

Permalink: https://github.com/advisories/GHSA-3xq5-wjfh-ppjc
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0zeHE1LXdqZmgtcHBqY84AAw0p
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 1 year ago
Updated: 18 days ago


CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-3xq5-wjfh-ppjc, CVE-2023-22467
References:

Affected Packages

npm:luxon
Versions: >= 1.0.0, < 1.28.1, >= 3.0.0, < 3.2.1, >= 2.0.0, < 2.5.2
Fixed in: 1.28.1, 3.2.1, 2.5.2