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GHSA-3xq5-wjfh-ppjc

Luxon Inefficient Regular Expression Complexity vulnerability

Source: GitHub Advisory Database (reviewed) High CVE-2023-22467

Packages

EcosystemPackageAffectedFixed in
npm luxon >= 1.0.0, < 1.28.1 1.28.1
npm luxon >= 2.0.0, < 2.5.2 2.5.2
npm luxon >= 3.0.0, < 3.2.1 3.2.1

Details

As written in the advisory (Markdown source, shown as plain text).

# 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.

References

External links from the advisory. They lead to third-party sites.