GHSA-3xq5-wjfh-ppjcHighCVSS 7.5
Luxon Inefficient Regular Expression Complexity vulnerability
🔗 CVE IDs covered (1)
📋 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.
🎯 Affected products3
- npm/luxon:>= 2.0.0, < 2.5.2
- npm/luxon:>= 3.0.0, < 3.2.1
- npm/luxon:>= 1.0.0, < 1.28.1
🔗 References (8)
- 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