CVE-2022-31129

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.

Recent assessments:

3dcyber at September 07, 2023 2:07pm UTC reported:

This vulnerability causes a denial of service in applications that use the moment library in the vulnerable versions.

• When it is a javascript application on node.js, the impact of the vulnerability is greater.

• When the application only loads or uses the library on the frontend, the impact is less since the denial of service is local to the browser.

Assessed Attacker Value: 3
Assessed Attacker Value: 3Assessed Attacker Value: 5