CVE-2023-22467: luxon.js inefficient regular expression complexity vulnerability
First published: Wed Jan 04 2023(Updated: )
# 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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Momentjs Luxon | >=1.0.0<1.28.1 | |
| Momentjs Luxon | >=2.0.0<2.5.2 | |
| Momentjs Luxon | >=3.0.0<3.2.1 | |
| npm/luxon | >=1.0.0<1.28.1 | 1.28.1 |
| npm/luxon | >=3.0.0<3.2.1 | 3.2.1 |
| npm/luxon | >=2.0.0<2.5.2 | 2.5.2 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2023-22467 https://nvd.nist.gov/vuln/detail/CVE-2023-22467 https://github.com/moment/luxon/security/advisories/GHSA-3xq5-wjfh-ppjc
- https://bugzilla.redhat.com/show_bug.cgi?id=2159959
- https://access.redhat.com/errata/RHSA-2023:0630
- https://access.redhat.com/security/cve/cve-2023-22467
- https://github.com/moment/luxon/commit/5ab3bf64a10da929a437629cdb2f059bb83212bf
- https://github.com/moment/luxon/security/advisories/GHSA-3xq5-wjfh-ppjc
- https://github.com/moment/moment/pull/6015#issuecomment-1152961973
- https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g
- https://access.redhat.com/security/cve/CVE-2022-31129
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2159961
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4LIVOASKBQH7FEUI5RWM3SOHR6VK7ZZR/
- https://nvd.nist.gov/vuln/detail/CVE-2023-22467
- https://github.com/advisories/GHSA-3xq5-wjfh-ppjc (Advisory)
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/44I3WAJKYXDLOVYRGMHAUXMIV4SPFXDZ/
Frequently Asked Questions
What is CVE-2023-22467?
CVE-2023-22467 is a vulnerability in the luxon package that leads to a regular expression denial of service.
Which software is affected by CVE-2023-22467?
The vulnerability affects Luxon versions 1.x prior to 1.38.1, 2.x prior to 2.5.2, and 3.x prior to 3.2.1.
What is Luxon?
Luxon is a JavaScript library used for working with dates and times.
What is the severity of CVE-2023-22467?
CVE-2023-22467 has a severity rating of high (7) based on the Common Vulnerability Scoring System (CVSS) v3.0.
How can I fix CVE-2023-22467?
To fix CVE-2023-22467, upgrade Luxon to version 1.38.1 for 1.x branch, 2.5.2 for 2.x branch, or 3.2.1 for 3.x branch.
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