moment/luxon · Security
Luxon Inefficient Regular Expression Complexity vulnerability
- GHSA ID
- GHSA-3xq5-wjfh-ppjc
- CVE ID
- CVE-2023-22467
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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.
CWEs
- CWE-1333 · Inefficient Regular Expression Complexity
References
- https://github.com/moment/luxon/security/advisories/GHSA-3xq5-wjfh-ppjc ↗
- https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g ↗
- https://nvd.nist.gov/vuln/detail/CVE-2023-22467 ↗
- https://github.com/moment/moment/pull/6015#issuecomment-1152961973 ↗
- https://github.com/moment/luxon/commit/5ab3bf64a10da929a437629cdb2f059bb83212bf ↗
- https://lists.fedoraproject.org/archives/list/[email protected]/message/4LIVOASKBQH7FEUI5RWM3SOHR6VK7ZZR/ ↗
- https://lists.fedoraproject.org/archives/list/[email protected]/message/44I3WAJKYXDLOVYRGMHAUXMIV4SPFXDZ/ ↗
- https://github.com/advisories/GHSA-3xq5-wjfh-ppjc ↗