CVE-2022-31129
Moment.js vulnerable to Inefficient Regular Expression Complexity
Description
moment is a JavaScript date library for parsing, validating, manipulating, and formatting dates. Affected versions of moment were found to use an inefficient parsing algorithm. Specifically using string-to-date parsing in moment (more specifically rfc2822 parsing, which is tried by default) has quadratic (N^2) complexity on specific inputs. Users may notice a noticeable slowdown is observed with inputs above 10k characters. Users who pass user-provided strings without sanity length checks to moment constructor are vulnerable to (Re)DoS attacks. The problem is patched in 2.29.4, the patch can be applied to all affected versions with minimal tweaking. Users are advised to upgrade. Users unable to upgrade should consider limiting date lengths accepted from user input.
How to fix CVE-2022-31129
To remediate CVE-2022-31129, upgrade the affected package to a fixed version below.
- —upgrade to 2.29.1+ds-2+deb11u2 or later
- —upgrade to 2.29.4 or later
- —upgrade to 2.29.4 or later
Is CVE-2022-31129 being exploited?
Low — EPSS is 3.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.29.1+ds-2+deb11u2
- >= 2.18.0, < 2.29.4
- >= 2.18.0, < 2.29.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |